your potential silcolease our full spectrum of silicone … 10 11 elkem silicones solventless...

Our full spectrum of silicone release solutions

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Silcolease

Deliveringyourpotential

Si l icones

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Elkem SiliconesGeneral Introduction

What are silicones?The term “silicone” has been used to describe a variety of organosilicon compounds. Silicon denotes the chemical element (Si), which cannot be found in the pure state, but is present in chemically and thermally stable mineral compounds. The common term ”silicone” refers to the chemical family of “polyorganosiloxanes”.In practice, for release coatings, the organo part of the polymer is a methyl group, but other constituents can be seen on the Si atoms.

Properties of Silicone PolymersSilicone polymers have many attractive features, including :• Resistance to extreme temperature• Electrically non-conductive• Resistance to weathering• Low degree of toxicity• Low surface energy

The silicones used in Elkem Silicones Silcolease® systems rely on certain specific properties :• A three dimensional network which is relatively elastic and hydrophobic.• A non-migratory low surface energy coating.

The unique properties of the coated and cured silicone layer gives a non-stick surface which does not alter final adhesive performance.

Si14

SiliconSiAtomic Number 14

Our full spectrum of silicone release

solutions

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Silicones in “release coating” applications and typical substrate choicesThe silicone coated paper or film is commonly known as a “release liner”. The grades of film or paper used are often quite specific to this application. Major substrate types are listed below:

Glassine & Super Calendered Krafts (SCK) Highly dense and smooth surface paper used widely as liner in label industry and accounting for nearly 40% of all release liner papers.

Polyolefin coated Kraft and in particular Polyethylene coated Kraft (PEK) A basic kraft paper with a thin layer of PE used to close the surface. This paper offers excellent dimensional stability and is an economic solution to achieve high smoothness and holdout with a basic paper quality. This paper is used very widely in Asia and accounts today for just under 20% of the global release liner volume.

Clay Coated Kraft (CCK)Kraft paper with a holdout coating of clay filled latex. This paper is widely used in Europe and North America for applications requiring excellent dimensional stability such as graphics. CCK accounts for nearly 15% of the total release liner production.

Film liners Film materials have seen strong growth rates in recent years. Depending on the specific grade, the advantages vary from smoothness, die cutting, strength, cost or recyclability. Common films are PET, OPP and PE (HD & LD) but the more heat sensitive of those are usually coated with radiation cured silicones. Films account for nearly 20% of the global release liner market.

Other paper liners Vegetable parchment or greaseproof papers are used in food and cooking applications. Machine finished, uncoated or size coated papers are used for some basic liner applications. They account for just under 15% of liners.

The specific combination

of paper or film plus silicone is the vital

element that gives to the release liner its

final characteristics. The choice depends

predominantly on the release liner end application.

Most common applicationsLabelstock is the largest application and covers the following end applications :• Primary labels for foodstuffs, beverages, cosmetics or other general consumer goods. • Price labels• Bar-code labels• Security labels – void, hologram• Smart labels – RFID, heat sensor labels

PSA Tapes • Double sided tapes for fixing and bonding• Flying splice in paper industry• Electronic applications• Automotive applications

Medical & Hygiene Silicone release coatings are vital for easy-to-use self-adhesive products for:• Closures for feminine hygiene products, baby diapers and incontinence inserts.• Sticking Plasters• ECG & EEG electrodes• Disposable surgical gowns

Graphic Arts & decorative labels rely on silicone release coatings with a specific performance:• Vehicle decoration• Advertising panels• Building decoration and protection

Industrial & other consumer goods silicone release liners offer gains in productivity and ease of use in many areas :• Interleaving applications• Roofing (bitumen)• Insulation tapes• Self-adhesive stamps• Envelopes• Composites

Food release & cooking papers offering a non-migratory non-stick surface, these papers have a growing role in industrial and household cooking applications. The very low toxicity and excellent biocompatibility of silicones means that they are fully compliant with all regulatory requirements for such applications :• Baking paper• Cooking trays• Food interleaving sheets

https://silicones.elkem.com/EN/Our_offer/Market_And_Application/Pages/Pressure-sensitive-labels.aspx

https://silicones.elkem.com/EN/Our_offer/Market_And_Application/Pages/Hygiene.aspx

https://silicones.elkem.com/EN/Our_offer/Market_And_Application/Pages/Graphic-Arts.aspx

https://silicones.elkem.com/EN/Our_offer/Industries/Pages/food-and-beverage.aspx

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Many applications, which silicone to choose?

Benefit from Elkem Silicones’ set of customed services

Technical Services

Benefit from 40 years of expertise with our Technical Service:• Tailor-made solutions

worldwide • Team training and

innovation programs• Access to our R&D

expertise and state-of-the-art laboratory equipment

• A dedicated technical service team

Unleash your potential with Silcolease® full spectrum of silicone release solutionsIn many cases one silicone system can work for a wide variety of applications but for

seemingly similar applications the silicone technology used can be totally different. The coating machine and process plays a big role in the definition of the coating system. From wide web coaters to narrow web labelling machines, from paper machine applied grades to film coating lines, line speeds from 50 to 1200 m/min, there are many and varied factors which influence the choice of the ideal silicone system to make a release liner suited to the end application.

Release coating specialists to help you !Elkem Silicones release coating industry specialists are a vital element to help you choose the right Silcolease® system. With production sites on four continents and technical centres around the world, there are dedicated teams to assist with the optimisation of your product and process. In our laboratories and technical centres, on our dedicated pilot machines or on site at our customer’s coating lines your Elkem Silicones Silcolease® expert is on hand to help you achieve your results.

Technology Strengths Weaknesses

SOLVENT TIN THERMAL (Polycondensation)

• Low coatweights• Low inhibition potential• Low acrylic adhesive interaction

• Safety (solvent & tin toxicity)• Slow cure (post cure required/off-line only)• Blocking• Short bath life

SOLVENT PLATINUM THERMAL (Polyaddition)

• Faster cure and longer bath life (vs tin)• Low coatweights with excellent coverage• In-line laminating possible (vs tin)• Very easy release• Excellent anchorage on films

• Inhibition of Pt catalyst• Solvent (safety and cost)• Bath life limited• In-line lamination limited• Flat release difficult to achieve

SOLVENTLESS PLATINUM THERMAL

• Fast Cure, high line speeds• Flatter release profile (solvent)• Environmentally safe• Easy mixing• In-line laminating

• Higher coatweights than solvent based• Sophisticated coating techniques required• High quality substrate required• Limited performance on films• Pt inhibition• Bath life limited

EMULSION PLATINUM THERMAL

• Simple coating technique• No organic solvent (environmentally safe)• Easy modification of coating bath• Cheap porous paper can be used

• Water effect on papers• Drying requirements

(longer cure times vs solventless)• Transport (vs solventless)

SOLVENTLESS UV RADIATION

• Very fast cure• Excellent anchorage on films• Low or no thermal input to substrate• Compact installation & energy costs• Low capital investment• Very long bath life (single component

systems available)• Low substrate inhibition (Free Radical)

• Limited range of release• Cost (chemistry)• Inert atmosphere required for Free

Radical systems

Silcolease® release coating systems are supplied in three basic forms : • in solvent dilution• as solventless silicone fluids• in water as dilutable emulsions

The choice of the appropriate carrier material is defined by coating equipment, substrate to be coated, regulatory and safety limitations and final end performance needs. The objective is to apply a uniform thin layer of liquid silicone onto the carrier substrate and transform, through a chemical reaction, the liquid into a cured surface coating. The polymerisation of the silicone is carried out either by a thermal curing mechanism or by UV light activation.

Supply Chain

Run your activity with the support of a reliable Supply Chain: • Packaging and labelling

customization • Delivery services to cope

with your demand peaks • Inventory solutions that

give you flexibility• Collaborative supply

chain programs

Regulatory & Quality

Count on our Quality and Regulatory services:• Test the characteristics

you need to guarantee the quality of your products

• Full support on quality investigation follow-up

• Supply of required regulatory compliance statements

• Product Stewardship experts support for regulatory submissions

Innovation

Obtain recognition as an innovative partner by launching new solutions that you and your customers can count on:• Co-development programs• Access to our latest

innovations

https://silicones.elkem.com/EN/Our_offer/Our_Brands/Pages/Silcolease.aspx

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Elkem SiliconesGeneral Introduction01

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Elkem SiliconesSolventless Thermal Solutions

Silcolease® OPTIMASolventless Thermal range01


solutions

Solventless Thermal systems are the most commonly used release systems and is the dominant technology in the label industry.Solventless Thermal technologies are based on polyaddition chemistry requiring a catalyst (generally platinum (Pt)) and thermal activation to cure the system. Curing is achieved by passing the silicone coated substrate through an oven to drive the reaction.

A major advantage of Solventless technology is that there are no diluting solvents, limiting health and safety hazards, and minimising any potential environmental risks. Furthermore, without the need to evaporate diluting solvents, they are more energy efficient when compared to the other thermal curing technologies.

Elkem Silicones Silcolease® OPTIMA range of products, through a more efficient curing mechanism, allows lower energy curing, increased productivity or economies of the expensive Pt metal catalysts.

The major features and benefits of Silcolease® OPTIMA Solventless Thermal Range are:• Lower energy costs• Environmentally friendly and safe solvent-free formulations• Excellent processing on machine at high processing speeds• Economical low platinum (Pt) formulations• Ease and flexibility of formulating for the broad range of applications• Excellent anchorage on a wide and varied range of substrates• Low viscosity and excellent wetting properties to give optimal coverage of the coated substrate

To choose Solventless Thermal silicone system that will give the ideal performance in your end application, the global technical service team of Elkem Silicones is always on hand to assist you.

Elkem Silicones Silcolease® systems are usually made of a minimum of 3 components but can go to as many as 5 or 6 components for certain applications. The major components are as follows: • Base Polymers• Crosslinkers• Catalysts• Release Control Additives• Mist Reduction Additives• Other Performance Additives

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01. Base polymers (POLY) These give the basic silicone structure and through their intrinsic properties influence the overall release level, the profile of the release at varying stripping speeds, the compatibility with a wide range of substrates, the speed of curing, the anchorage level and the processing ease on machine.

The polymers are typically linear siloxanes with reactive groups based on alkenyl chemical groups (most commonly vinyl) which can be placed in various positions on the chain to give the performance properties required. The base polymer typically contains an inhibitor to ensure a long bath life after catalysis.

There is no one single perfect polymer that can meet all release coating need. Different polymers are available to achieve desired performance requirements depending on the specific technical need or end application.

03. Release Control Additives (RCA)These are blends of silicone polymers with three dimensional molecules known as “resins” which alter the structure and nature of the silicone composition.

RCA allows the release force to be tailored for a particular application. RCAs are present in many formulations for a wide range of end applications. The chosen RCA influences the cure speed, ease of use on machine, release performance against specific adhesive types, release stability with laminate or liner ageing and a number of other factors.

RCAs in the solventless thermal range, are all tight release additives which increase the release force from the level achieved with the base polymer alone.

In the graphs on the following pages, a value of 10 means that the component or system chosen gives the ultimate performance for the property illustrated.

flat release profile

low misting & easy coating

substrate variety

anchorage

cure speed

porous substrates

PET film coating

premium release level

release stability

off-line performance

tight release with acrylic PSA

formulating ease

tight release with hot melt PSA

coating ease

zippiness at very tight release level

in-line performance

cure speed/Pt reduction

04. Catalysts (CATA)Catalysts are metal-containing compounds that drive a chemical reaction between the various reactive groups found on the different components of the Elkem Silicones Silcolease® system. They are based on platinum (Pt) or tin (Tn) chemistries and are available in various concentration for ease of formulating. In general, the catalyst is a separate component to allow maximum formulation flexibility and optimisation of this extremely expensive raw material. Elkem Silicones Silcolease® OPTIMA products can be used to minimise the quantity of Pt used over a wide range of application and substrate.

Other performance additivesTypically other additives can be used in the system to adjust and optimise a number of properties such as:• Misting performance on coating machine at high coating speeds • Coefficient of friction of the final coating• Bath life• Anchorage• Back side transfer and printability• Bath viscosity

POLY 360 POLY 367 POLY 368 POLY 371 POLY 330

Main features of base polymers

02. Crosslinkers (XL)The crosslinkers are responsible for the type of final cured network and have an influence on the end properties of the silicone coating. The hydride groupe (SiH) of the crosslinker react with the vinyl groups (Vi) on the base polymer in the presence of a catalyst. Elkem Silicones Silcolease® OPTIMA crosslinker range influences the speed of cure, silicone anchorage, aged stability of the coating and adhesive interaction potential.

aged anchorage

substrate varietyfilm coating

low release interaction

Pt reduction

low temperature cure anchorage

XL 320 XL 321 XL 315 XL 325 XL 327 XL 324

Main features of crosslinkers

Main features of RCA

RCA 12 RCA 12052 RCA 394 RCA 395 RCA 396

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Solventless Thermal System Silcolease® OPTIMAGlobal rangeSilcolease® - Polymers

Silcolease® - Release control additives

Silcolease® - Crosslinkers

Silcolease® - Catalysts

Silcolease® - Mist reduction solutions

Product reference

Viscosity (mPas/cps)

Typical applications Features

RCA 395 ~1900 • Labels• Tapes

• For in-line and off-line applications• Fast cure & very low extractables• Low zipping with excellent aged release stability • High release efficiency against all adhesives• Friction

RCA 396 ~1800 • Labels for high speed dispensing

• LTC performance for in-line and off-line applications

• Fast cure & very low extractables• Very good release stability• α-olefin free

Product reference


Pt content (ppm) Features

CATA 340 ~1500 1100 • Pre-mix of latest generation MRA & Pt catalyst• Reduces silicone mist up to speeds of 1600m/min• Efficient with high RCA content

CATA 342 ~600 1100 • Pre-mix of latest generation MRA & Pt catalyst• Reduces silicone mist up to speeds of 1600m/min• Lower viscosity for easier mixing allows higher Pt dose

than CATA 340

MRA 385 ~1800 - • Concentrated formulation of latest generation MRA• Reduces silicone mist up to speeds of 1600m/min• Efficient with high RCA content

Product reference



POLY 360 ~100 • Labels for high speed dispensing

• Low viscosity polymer for high speed coating• Low misting, high reactivity & excellent coating• Flat release profile

POLY 362 ~200 • Labels• Tapes

• Low viscosity polymer for high speed coating• Low misting, high reactivity & excellent coating

POLY 365 ~600 • Labels• Tapes• Hygiene

• Medium high viscosity polymer• High reactivity• Good solution against aggressive hot melts• Dynamic release profile


• Low viscosity polymer• Low misting• Good reactivity• Excellent general purpose system with high

abrasion resistance• Flat release profile


• Medium viscosity polymer for LTC or reduced Pt levels

• Premium release forces• Excellent effect of RCA range for tighter release force

POLY 369 ~250 • Labels for high speed dispensing• Graphics

• Very flat release profiles for label applications• Excellent cure on all papers• Excellent performance in graphic applications• Low co-efficient of friction


• Ultra flat release profile for label applications• Excellent performance in graphic applications• Optima cure performance


• Superior flat release over a broad range of stripping speeds

• Good cure at high coating speeds• Multi-functional polymer

Product reference


Pt content (ppm) Features

CATA 12070 ~300 2000 • Standard Pt catalyst

CATA 11091M ~300 3000 • Standard Pt catalyst

CATA 341 ~300 1000 • Standard Pt catalyst with lower Pt concentration for easier dosing

NEW

* Limited zone availability (please contact your Elkem Silicones sales team to confirm)

Product reference

Viscosity(mPas/cps)

Pt range achievable (ppm)

Features

XL 325 ~25 25-50 • Allows very low Pt content formulations• Excellent reactivity for high speed coating• Excellent reactivity for low temperature coating

XL 327 ~25 25-50 • Allows very low Pt content formulations• Excellent compromise reactivity/anchorage

XL 321 ~25 45-70 • Excellent compromise reactivity/anchorage

XL 311 ~25 45-70 • XL adapted for Asian PEK substrates• Allows very low Pt content formulations• Excellent compromise reactivity/anchorage

XL 310* ~25 - • Excellent at high coating• Excellent stable aged release force

https://silicones.elkem.com/EN/our_offer/Product/90060152/_/SILCOLEASE-XL-311

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Silcolease® - Polymers



Silcolease® - Additives


Solventless Thermal System Special performance products

Product reference




• Mainly for off-line applications• High resin content• Low zipping• High release efficiency (particularly Vs acrylic adhesives)


• For in-line and off-line applications• General Purpose modifier for most adhesive and label applications• α-olefin free


• Mainly for in-line applications• Effective at small addition levels Vs most

permanent acrylic and HM adhesives• α-olefin free

RCA 12052 ~3000 • Tapes • Very high release efficiency• Mainly for off-line applications

Product reference


Pt range achievable(ppm)

Features

XL 96A ~25 50-100 ppm • Homopolymer SiH crosslinker• Excellent abrasion resistance on wide range of substrates• Low release interaction potential

XL 323 ~25 50-100 ppm • Optimised anchorage for difficult substrates

XL 324* ~10 45-70 ppm • Homopolymer SiH crosslinker• Excellent compromise reactivity/anchorage• Low release interaction potential

XL 12031 ~45 60-90 ppm • Standard co-polymer crosslinker with fast cure• Good compromise of reactivity with acceptable abrasion

resistance on most standard substrates

XL 320 ~25 45-70 ppm • LTC compromise with good anchorage

Product reference



ADD 382 ~15 • PET film coating • Abrasion resistance additive for PET film coating• Improves long term anchorage in high humidity conditions vs difficult adhesives

ADD 383* - • Composites• Industrial tapes

• Low friction additive, reduces blocking, reduces back side transfer and improves printability

ADD 381* ~25 • PET film coating • Long lasting anchorage on PET even in contact with aggressive adhesives

• Long lasting anchorage on PET in high humidity conditions

NEW

Product reference




• Excellent release against hot melts & aggressive adhesives• Low release at both low and high peel speeds• Good anchorage on film• Optimised polymer for coating onto PET film

POLY 8500 ~350 • Labels • Medium viscosity polymer

POLY 363 ~500 • Labels• Tapes• Graphics

• High reactivity• Good solution against aggressive hot melts• Long bath life• Good anchorage on film• Flat release profile• Low friction


• Optimised polymer for coating onto PET film• Possible to use without anchorage additive• Flat release profile


• General Purpose grade





POLY 356 ~400 • Labels for high speed dispensing • Premium flat release over a broad range of stripping speeds• Good cure at high coating speeds• Anchor to most substrates

https://silicones.elkem.com/EN/our_offer/Product/90059466/_/SILCOLEASE-POLY-356

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Silcolease®


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Solventless Thermal System North American range

Product reference

Viscosity (mPas)


XL 326 ~25 • Labels• Tapes

• For reduction of Pt content• Excellent compromise of reactivity/anchorage

XL 328 ~25 • Labels• Tapes

• For reduction of Pt content• Excellent compromise of reactivity/anchorage

NEW

Product reference




• Wide range of release levels with addition of release modifiers

• High reactivity• Good solution against aggressive hot melts• Excellent abrasion resistance


• Low viscosity polymer• Low misting• High reactivity• Excellent coating performance at high speed• Optima concept designed for platinum reduction

or faster cure

POLY 355 ~600 • Labels• Tapes• Graphics

• Medium high viscosity polymer• Good solution against aggressive hot melts• Optima concept designed for platinum reduction

or faster cure


• Low viscosity polymer• High abrasion resistance• Flat release profile• Optima concept designed for platinum reduction

or faster cure


• Good solution against aggressive hot melts• Excellent abrasion resistance• Optima concept designed for platinum reduction

or faster cure

https://silicones.elkem.com/EN/our_offer/Product/90058393/_/SILCOLEASE-POLY-355

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Elkem SiliconesEmulsion Thermal Solutions


solutions

02 Silcolease® Emulsion Thermal range

Important properties related to applications & equipmentThis diagram demonstrates how application and equipment drive the properties needed for an emulsion system. The highest points on the scale are the factors of most importance to be optimized for each given application.

shear stability

cure speed

bath life

release

coverage

wetting

water resistance foaming

On machine bakery system

Coating machine hygiene system

Label system

PET coating

Major applications are:• Cooking and baking paper• Hygiene• Envelopes• Industrial interleaving

The major advantage of emulsion technology is that it is very easy and safe to process. The nature of the emulsion systems and their ease of formulation with other organic components mean that they can be easily modified for various coating conditions.

Elkem Silicones can help to adapt and modify system formulations to all machine conditions. Emulsion silicones are a good option for coating open porous papers at reasonably low silicone coating weights. For in-line PET film coating, an emulsion silicone can be applied during the extrusion process in total safety and without major investment in sophisticated coating techniques.

Elkem Silicones has a long experience in the industry and the widest range of products for optimum performance while respecting the delicate balance between emulsion stability and high productivity.

Silcolease® Emulsion technology range offers unique benefits for certain applications and is the only choice for paper machine application of a silicone release coating. It is well adapted to all coating techniques such as size press (metered or traditional, film press), gravure or doctor blade type coating heads. Equally, simple coating techniques such as those used for solvent based silicones can be adapted for emulsion coating paying attention to wetting properties, solids levels and suitable thickening agents.

Silcolease

As leaders in a field of cooking and baking papers, Silcolease® products all comply with international food regulations (FDA, BFR, etc.).

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Emulsion Thermal SystemGlobal rangePolyaddition curingSilcolease® - 2 components polymers


Silcolease® - Special emulsion



* Development product - limited availability** Manufactured in LATAM

* Limited zone availability (may not be available in all regions – please contact your Elkem Silicones sales team to confirm)

Polycondensation curingSilcolease® - Emulsions

Product reference Features

EMULSION XL 966 • Standard crosslinker• Good anchorage• 40% solids emulsion with excellent physical bath stability

EMULSION XL 969 • Standard crosslinker• Good anchorage• 60% solids emulsion with excellent wetting properties

EMULSION XL 968 • Optima concept• High reactivity crosslinker• Lower catalyst level or faster cure• 40% solids emulsion with excellent physical bath stability


EMULSION RCA 954 • Tight release modifier suitable for a wide range of adhesives

EMULSION ADD 702 • Rheology modifier • Reduces silicone penetration & consumption• Improves bath stability

SILCOLAPSE 7140 • Recommended antifoams for Silcolease® emulsions


EMULSION 907 • Base for multi purpose 3 component system• Good cure & anchorage• Low release with wide range of self-adhesives


EMULSION CATA 903 • Standard Platinum catalyst• Stability additive

EMULSION CATA 909 • Concentrated Platinum catalyst• Longer shelf life

EMULSION CATA 911* • Lower Platinum concentration catalyst for easy use (50:50 system)• Stability additive


EMULSION 70840 • Base for multi-purpose 2 component system• Good performance on Pt cure inhibiting substrates• Low release (particularly against certain adhesives)

EMULSION CATALYST 70827A*

• Standard di-butyl tin catalyst• Industrial applications only (no food contact approval)

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NEW


EMULSION 902 • Good cure & anchorage• Low release with wide range of self-adhesives

EMULSION 908 • Good cure & anchorage• Low foaming/high bath stability• Very good bakery release• Improved water resistance coating

EMULSION 925 • Premium bakery release• Low foaming/high bath stability• Improved water resistance coating

EMULSION 915 • Good cure & anchorage• Low foaming/high bath stability• Excellent bakery release• Improved water resistance coating

EMULSION 912 • Optima concept• Lower catalyst level or faster cure• Easy release for many self-adhesive applications

EMULSION 922* • Premium release for hygiene & tapes• Optima concept• Lower catalyst level or faster cure• Off-line coating

EMULSION 904** • Good cure & anchorage• Low release

EMULSION 923* • Fast cure• Good bakery performance

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Polycondensation curing Silcolease® - Catalysts



Silcolease® - Emulsions

Emulsion Thermal System North American range Polyaddition curing


PC-105 NXL • Base for multi purpose 3 component system• Good cure & anchorage• Low release with aggressive adhesives

PC-107 • Base for multi purpose 2 component system • Good cure & anchorage• Low release for roll label applications

PC-107 NXL • Base for multi purpose 3 component system• Good cure & anchorage• Low release for roll label applications

PC-188 NXL • Base for high density network • 3 component system• Good cure and anchorage• Low foaming/high bath stability• Excellent for bakery release• Improved water resistance coating

PC-188 • Base for high density network • 2 component system• Good cure and anchorage• Low foaming/high bath stability• Excellent for bakery release• Improved water resistance coating


PC-95 • Standard Platinum catalyst


PC-168 • Base for multi-purpose 2 component system• Good performance on Pt cure inhibiting substrates• Low release (particularly against certain adhesives)• Fast cure with low post cure extractables

PC-94 • Standard tin catalyst • Not for food contact applications


PC-31 • Crosslinker that provides fastest cure

PC-50 • Crosslinker that provides balance of cure and anchorage

PC-868 • Crosslinker that provides excellent anchorage against difficult substrates


PC-191 • Tight release modifier • Good cure & anchorage• Low release

PC-195 NXL • Tight release modifier suitable for a wide range of adhesives

PC-197 • Very tight release options with both rubber and acrylic adhesives

HA-1 • Rheology modifier • Reduces silicone penetration • Improves bath stability

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Elkem SiliconesSolventless UV Solutions


solutions

Silcolease® SolventlessUV rangeUV Silicones is the only curing technology that offers the flexibility to coat film liners and other heat sensitive substrates unattainable with thermal cure systems.

Energy costs are low compared to thermal systems and space taken by installation is small, making UV an option for speciality users. UV systems are the natural choice for coating heat sensitive films which are, by nature, more easily recyclable and hence give a more environmentally friendly end liner product.

UV systems are the silicones of choice for:• Heat sensitive films• Narrow web applications with limited space for drying sections • Over coating of printed surfaces• Liner recycling• Linerless labels

The most sustainable silicone curing technologyThe photopolymerisation curing process of Silcolease® UV systems render them safe to use and a responsible choice.

Benefits for you include:• Use of solventless and water-based system to lower VOC emissions• Compact and simple machinery• Safe products : no odor and no toxicity• Low energy consumption• Reduction of total cost of operations

Why should you choose Silcolease® Solventless UV range? • Very fast cure• Very long bath life• Excellent anchorage on films• Low or no thermal input to substrate• Low substrate inhibition • Ready-to-use monocomponents

03Silcolease® UV range complies with skin contact regulationsAfter complete curing, at the conditions recommended in the technical data sheets our UV Silcolease® systems should satisfy the EU directive regulating the skin contact.

For more details or for any statement, please contact your Elkem Silicones sales team.

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Comparison of performanceThe diagram demonstrates the benefits & drawbacks of UV technology Vs thermal solventless technology

substrate sensivity siliconise over print

installation & running cost

adhesion

energy

silicone cost

cure rate

release versatility

atmospheric inhibition

UV 100 series acrylate

UV 200 serieepoxy

optima series thermal

traditional solventless thermal

Elkem Silicones free radical system Silcolease® UV 100 series Based on acrylate functional silicone polymers with a free radical curing mechanism. The major advantage of these products is their excellent cure and anchorage behaviour on almost any substrate. This means that they can be used on a widerange of speciality films. Their robustness to cure onto printed surfaces makes them the ideal candidate for linerless label applications. One drawback with the free radical technology is that the reaction is inhibited by atmospheric oxygen. These systems must be processed under an inert atmosphere with nitrogen blanketing.

Elkem Silicones cationic system Silcolease® UV 200 series Based on epoxy functional silicone polymers with a cationic curing mechanism. The major advantage of these products is their excellent cure response to UV C radiation due to the incorporation of patented Iodonium Borate photoinitiator technology. A unique feature of Elkem Silicones Silcolease® UV 200 series is the possibility to supply a ready-to-use single component without additional bath formulation. A range of base polymers offers flexibility for coating head and substrate variations. The release control additives (RCAs) are used to modify the release towards premium or tight values.

Comparison of cationic and free radical systems

UV 100 seriesFree Radical

UV 200 seriesCationic

Monocomponent system YES YES

Bath life VERY LONG LONG

Bath can be heated YES NO

N2 inerting YES NO

Substrate sensitivity (inhibiton) NO YES

Overprint application YES VERY LIMITED

Moisture sensitivity NO YES

Heat sensitive substrates YES YES

Paper remoisturization NO NO

In-line adhesive laminating YES SELECTIVE

Odourless YES YES (CATA 243)

Functional coatings YES LIMITED

Release flexibility LIMITED YES

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Epoxy chemistry with cationic curing mechanism Silcolease® UV 200 series



Product reference Viscosity (mPas/cps) Features

UV RCA 200 ~600 • Easy-premium release additive• Low migration• Suitable for label & tape applications

UV RCA 251 ~2500 • Tight release additive• Suitable for many two-sided tape applications

UV PC-675* ~2500 • Premium release additive• Reduces coefficient of friction• Well suited to bulk adhesive applications


UV POLY 200 ~350 • Epoxy base polymer• Medium release• Very low extractables• Low back side transfer

UV POLY 201 ~3500 • High viscosity epoxy base polymer• Excellent holdout on porous substrates• Adapted to flexo coating technology• Medium release• Very low extractables

UV POLY 204 ~50 • Low viscosity epoxy base polymer• Medium release• Very low extractables• Low back side transfer• Reactive diluent for coating quality improvement

UV POLY 215 ~250 • Epoxy base polymer• Improves anchorage to films• Medium release• Very low extractables• Low back side transfer

UV POLY 220 ~5000 • Epoxy base polymer• Premium release• Well suited to bulk adhesive applications (e.g bitumen)

UV POLY 235* ~350 • Epoxy base polymer• Easy release• Low extractables• Low back side transfer

Acrylate chemistry with free radical curing mechanism Silcolease® UV 100 seriesSilcolease® - Standard range


Silcolease® - Monocomponent systems with photoinitiator


UV POLY 118 ~1000 • Monocomponent system• Medium release

UV POLY 120* ~1000 • Monocomponent system• Easy release

NEW

NEW

NEW


UV POLY 110 ~1000 • High acrylate functionality silicone copolymer• Medium release

UV POLY 111 - • For hygiene application on non-woven substrates offering tight release and high shear

• Improves anchorage of standard coatings

UV POLY 112 - • Experimental grade • Premium release polymer

UV RCA 170 ~1000 • Easy release modifier• Low acrylate functionality silicone copolymer• Reduce zippy release phenomenon• Excellent EB easy release

UV CATA 102 ~950 • Liquid photoinitiator package• Excellent cure at low dose• Low hazard material

UV ADD 151 - • Improves anchorage of standard coatings• High acrylate functionality silicone copolymer

UV ADD 152 ~100 • Reactive diluent• Improves anchorage• Increases film hardness• Improves coverage and reduces bath cost with minimal release impact

UV ADD 153* ~8 • Reactive diluent• Reduce bath viscosity• Improves coverage and reduces bath cost with minimal release impact

https://silicones.elkem.com/EN/our_offer/Product/90060052/_/SILCOLEASE-UV-ADD-151

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Silcolease® - Catalysts and additives

Silcolease® - Mono component systems with photoinitiator


NEW


UV POLY 205* ~350 • Medium release• Very low extractables• Low back side transfer

UV POLY 206* ~350 • Non-zippy, easier release• Low extractables• Low back side transfer

UV POLY 230* ~250 • Improves anchorage to films• Non-zippy, easier release• Low extractables• Low back side transfer

UV POLY 245* ~350 • Medium release• Low odour PI• Very low extractables• Low back side transfer

UV POLY 246* ~350 • Non-zippy, easier release• Low odour PI • Low extractables• Low back side transfer

NEW

NEW


UV CATA 211 ~4 • Patented Iodonium Borate photoinitiator technology in IPA • Compatible with UV epoxy polymer

UV CATA 221* ~6 • Patented Iodonium Borate photoinitiator technology in DAA • Compatible with UV epoxy polymer

UV ADD 283* ~50 • Reduces coefficient of friction• Reduces blocking for lightweight plastics and two-sided coating applications• Reduces transfer and maintains printability

UV CATA 243 ~2000 • Patented lodonium Borate photinitiator (Pi) technology• High efficiency PI in low toxicity, non-flammable, zero VOC solvent• Low odour PI• Excellent compatability with all UV epoxy polymers• Low migration potential

https://silicones.elkem.com/EN/our_offer/Product/90059847/_/SILCOLEASE-UV-CATA-243

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Elkem SiliconesSolvent based Themal Solutions

Silcolease® Solvent basedThermal rangeElkem Silicones Silcolease® solvent-based range are based predominantly on polyaddition chemistry as used in thermal solventless systems.

High molecular weight silicones are diluted in volatile organic solvents. They offer the flexibility to coat filmic and many other substrates for speciality applications that are not possible with solventless or emulsion systems. Solvent systems have many technical advantages in such speciality applications for high clarity filmic liners, ultra-low release force liners and other specific niche markets.

Solvent based technology Solvent based systems offer advantages of excellent anchorage, smooth and even coverage at very low coatweights and very easy slow speed release. These properties make solvent based coatings hard to beat for premium product applications such as in the electronics industry and also for “clear on clear” or “no label look” labels.


solutions

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Solvent based solutionsPolyaddition curing

Silcolease® - Asian polymers range in aromatic solvent



Silcolease® - Release control additives & other additives


XL 90A • Fast cure• Suitable for use Vs aggressive acrylic adhesives

XL 91A • General purpose co-polymer• Good compromise of cure and anchorage performance

XL 92A • Homopolymer crosslinker• Excellent abrasion resistance on wide range of substrates• Easy release (low adhesive interaction)


CATA 90B • Standard Catalyst • Use with 7410, 7412, 7420

CATA 91B • Concentrated catalyst • Use with 7410, 7412, 7611

CATA 93B • Concentrated catalyst• Use with 7430, 7432, 7440, 7460

CATA 94B • Concentrated catalyst • Use with 7450, KF150, 7451


RCA1 • Easy release modifier

RCA3 • Tight release modifier• Very efficient at low addition levels

RCA5 • Tight release modifier• Very low extractables• Stable release

ADD 398 • Easy release additive• Premium release levels with low migration• Minimal impact on subsequent adhesion

ADD 107 • Anchorage additive for use on filmic substrates


POLY 7410 (30% solids)

• General purpose base for 3 component system• Flexible product formulation• Low to medium release • Good for papers

POLY 7412(30% solids)

• General purpose base for 2 component system • Low to medium release• Good for papers


• General purpose base for 3 component system• Flexible product formulation• Low to medium release • Low migration (High SA%)


• General purpose base for 3 component system• High bath stability• Good for films


• General purpose base for 2 component system • Good for films• Tight release base polymer

POLY KF150 (48.5% solids)

• Low release 2 component system • High bath stability• High solids content• Low release Vs acrylic solvent adhesives

POLY 7451(48.5% solids)

• General purpose 2 component system • Very easy release• High solids• Good anchorage & fast cure


• General purpose 2 component system • Excellent for film, especially PET• Very good anchorage • No or low migration


• Solventless formulation for solvent dilution• Cure at relative low temperature• Low levels of silicone migration• Good bath stability• Low and stable release values against a wide range of aggressive adhesive types• Excellent performance for cure and anchorage on a wide range of substrates • Good resistance to inhibition effects from a wide range of substrates

Silcolease® - European polymers range in aliphatic solventProduct reference Features

POLY 7420 (30% solids)

• General purpose base for 3 component system• Flexible product formulation• Low to medium release


• General purpose base for 3 component system• Improved performance on films• Lower temperature or faster cure• No or low migration• High bath stability• Medium release

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* European REACH regulations will gradually restrict the use of such catalyst types in polycondensation cure systems. In Europe, the tin catalyst system will gradually be replaced.

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Solvent based solutionsPolycondensation curing

Product Reference Silcolease® products

Features

POLY 429 POLYMER • Enables coating on particular supports inhibiting the polyaddition reaction (PVC...)• Stability of release coating performances with solvent based acrylic adhesives• Good anchorage on various substrates

XL 92A CROSSLINKER • Homopolymer crosslinker• Excellent abrasion resistance on wide range of substrates• Easy release (low adhesive interaction)

CATA 62A CATA 62B*

CATALYST • Good for substrates that inhibit Pt catalysts• Good anchorage to most substrates• Medium release force with GP adhesives• Easy & stable release with solvent based acrylic adhesives• Industrial applications only (no food conta/hygiene/medical/skin

contact approval)

Deliveringyourpotential

Si l icones

Elkem Silicones France SAS21, avenue Georges PompidouF-69486 Lyon Cedex 03 - FranceTel : +33 (0)4 72 13 19 00 Fax : +33 (0)4 72 13 19 88

Art direction & graphic design: Day on marsFont: Gotham NarrowPhotography: Stephane Cande, Sebastien Secchi, Christian ChaizeImage bank: GettyImages, Fotolia, Shutterstock, Fotosearch, iStock.

Elkem SiliconesElkem Silicones is one of the world’s leading fullyintegrated silicone manufacturers with applicationsand research laboratories, production sites and salesoffices located around the globe.At Elkem Silicones, we’re more than just high quality silicone products and associated services. We are a team of professionals located around the globe ready to provide you with the service and performance you deserve with a personal touch.From technical support to customized formulations and regulatory support, Elkem Silicones has the people in place when and where you need them, committed to help you deliver your potential. Because we care!

The information contained in this document is given in good faith based on our current knowledge. It is only an indication and is in no way binding, particularly as regards infringement of or prejudice to third party rights through the use of our products. Elkem Silicones guarantees that its products comply with its sales specifications. This information must on no account be used as a substitute for necessary prior tests which alone can ensure that a product is suitable for given use. Determination of the suitability of product for the uses and applications contemplated by users and others shall be the sole responsibility of users. Users are responsible for ensuring compliance with local legislation and for obtaining the necessary certifications and authorizations. Users are requested to check that they are in possession of the latest version of this document and Elkem Silicones is at their disposal to supply any additional information.

For detailed commercial contacts please visit our website: www.silicones.elkem.com

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