sheen paints.ppt

7/22/2019 Sheen paints.ppt

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SHEEN PAINTS


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Introduction

LATEX OR EMULSION PAINTS.

Introduced Europe/States late 1940s RSA 1951.

2 Distinct Advantages

Lower in odour

Application equipment could be washed withwater.

This opinion remained in place for over 30years until late 1980s early 1990s.Whenpressure to cut the Environmental / VOC impactof even latex based paints was felt.


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NP-9 APEOS

Wetting, dispersing additives.

Improve tinter acceptance.

Have been used for 40 years plus

1980s European movement

Against their use.

Adverse effects on film Properties. Break down products.

From 1995-96 EU labeling.


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AMP 95 FALAMINE,

ADVANTEX One of the first replacements for

Ammonia/NP9.

Multipurpose also partially replace

Coalescent, Dispersant, Biocides,Defoamers, Flash rust inhibitor.

Dominated USA/EU from 1980s to late1990s .

Late 1990s began to be replaced by solidAlkalis in the EU but it is still widely used.Some people are moving to even lessvolatile amines like Vantex T


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BIOCIDES

Up to the late 1980s early Mercurybased in Can Preservativesdominated the paint industry

Then CMIT/MIT Formaldehyderelease agents took over

Then in the mid 1990S

Formaldehyde release agents beganto be removed- which Meant thatCMIT/MIT levels had to be raised tocompensate


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EU VOC REGULATIONS 1

From 2007 in the EU very strictVolatile Organic Compound

(VOC) limits were set for variouspaint types

In 2010 the limits will belowered even further

Most EU Paint Companies goingstraight for the 2010 VOC limits


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Unlike most of the States in the

US the EU 2007/2010 limits are

set as g/Litre on total paint asused by the customer- not

removing the water from the

calculations as the Americanstend to do


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As the 2007/2010 EU VOC limits

are set for the paints as used by

the customers any VOCintroduced from the tinters

must be included


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The Main Sources of VOC in Water

Based Decorative Sheen Paints are

as follows: The wet Edge or lapping solvent

The Carrier Glycols from the Tinters

The Free Monomers or Co solventsfrom the polymers or any of the

additives used


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You are going to say what about

the Coalescent that is used to

Lower the MFFT? Well at present the EU

considers any material with a

Boiling point of more than 250Deg C to be zero VOC


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Which effectively means that

NX795 and Texanolthe main

Coalescents used in RSA forSheen paints are classed as

being zero VOC, so their levels

dont have to be included in anyVOC Calculations- For the EU


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However in the EU and especially

the States even higher boiling point

very low odour Coalescents- are nowbeing preferred

Examples are NX 800, Optifilm

300/400, Coasol A and Ser Ad FX 510

But as these tend to be more

expensive they have not really begun

to be used in RSA yet


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WRT Wet edge/lapping solvents inthe Northern EU they went fromMEG to PG and then total removal

In the Southern EU the PG levelshave been minimized and a lot ofpeople are looking for Zero VOCLapping/wet edge solvents

From Experience they will be a mustfor our hot Climate if low VOCproducts are ever to become verywide spread in Southern Africa


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Latices/Liquid Thickeners andDispersant- Free Monomers, Co

Solvents Up to mid 1980s free Monomer

levels high (0.5-1.0%).

USA/Europe/Australia started tomove to lower free Monomerlevels. (0.05% max).


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As free monomer and Co

solvents were lowered a lot

more microbiologicalcontamination problems were

experienced and biocide

packages had to be beefed up


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Late 1990s pressure to removeAmmonia and APEO from Polymers-move mostly complete in Europe- in

RSA move much slower but most ofthe R+H polymers/Additives offeredby Servochem are Ammonia andAPEO freethere are even somePolymers available (Primal SF-016

and Avance 412) that require noCoalescent (Normally referred to asCoalescent Free Binders)


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For most deep coloured

Decorative water based paints

the biggest source of VOC is thetinters used- most people in

RSA are still using MEG based

tinters with high levels of VOC


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In the EU Paint Companies went

from MEG to PG based Universal

tinters in Early Mid 1990S andare now moving towards Zero

VOC tinters-for most EU Paint

Companies it is only way theywill meet the 2010 EU VOC

limits


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ICC do have EU proven Zero

VOC, Glycol free tinters

available but as yet they havenot been sold locally-this

situation could change

dramatically in the next 2-3years


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EU RULE 43-1

Governs the CMIT level (15

PPM) above which consumer

warning labeling is required (Inthe most of the EU have such a

label on your Decorative water

based product is tantamount tocommercial suicide)


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EU RULE 43-2

Also the 15 PPM Max Limitthe

limit for the final paint as

received by the consumer so allsources of CMIT (Paint,

Polymer, Microvoid Opacifier +

Additives) have to be includedin the calculation


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EU RULE 43-3

At first most people reacted toRule 43 by removing all CMIT

based biocides from theirproducts- they then battled toobtain sufficient in canprotection cost effectively so

now people tend to use CMIT(Just below the 15 PPM limit) incombination with MIT and BIT


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EU RULE 43-4

Also remember no Formaldehyde

releasers are allowed which means

head space protection can be aproblem

Biocide packages to meet EU Rule

43 and still provide adequate

protection are now not only complexbut expensive


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EU RULE 43-5

One large Middle Eastern but EU

Controlled Multi National was

forced to apply Rule 43 to theirWater Based Products- their

Yearly Biocide bill increased by

more than USD 1 Millionwithan increased customer

contamination complaint rate


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DRY FILM BIOCIDE

LABELING-1 The Labeling limit for paints

containing Dry film Biocides is

now 1000 PPMwhich againmeans that it is difficult with

Conventional DFBS to obtain

adequate long term dry filmprotection and not have to label

your product


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DRY FILM BIOCIDE

LABELING-2 This has led to people changing

away from the traditional DFBS

like Rocima 363/363N , ActicideEPW/S or Nipacide DFS/X on tomore powerful and more waterleaching biocides like Rocima

350 which give adequate longterm protection at levels farbelow the EU labeling limits


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MINERAL OIL FREE

DEFOAMERS 1 Due to some evidence that some of

the Long Term effects of sick

building syndrome can be traced tothe presence of Mineral Oil

Defoamers in the wall Coatings used

on the interior of buildings there is a

slow but growing move (mostly inGermany) away from using Mineral

oil Defoamers in Decorative Paints


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MINERAL OIL FREE

DEFOAMERS 2 Fortunately if required there

Silicone and Silicone Free

alternatives available if theremoval of Mineral Oil

Defoamers is required- but as

with biocides cost to treat doesincrease


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CONCLUSIONS 1

EU/American regulations on paint

Labeling and what can and can not

be used is changing almost dailyand it is a battle to stay current

As can be seen from the above

solutions to meet the very stringent

EU VOC, Biocide requirements areavailable here in RSA but they come

with fairly hefty cost premiums

sheen paints.ppt

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