thickening with cationic surfactants

Thickening with cationic surfactants

H3i - Birmingham, 10 March 2015Dr. Sorel Muresan, Section Manager Cleaning EMEIA

• Introduction

• AkzoNobel Surface Chemistry’s product portfolio for thickening

• Formulations and thickening performance

• Summary

• Q&A

Outlook

Surface Chemistry EMEIA - Thickening 2

Introduction


4Surface Chemistry EMEIA - Thickening

Thickening“Thickening” is the increase of viscosity of a liquidsolution

Used for Cleaning products:

• to increase contact time on inclined and verticalsurface

• for easier dosage• for easier application to the surface


pH stability of typical thickener type

Cationic surfactants


In concentrated solutions, have a tendency to form rod micelles resulting in a veryhigh viscosity.

Viscosity increase is due to chaotic worm like arrangement of molecules insolution. The longer the chain length of the hydrophobe, the higher the viscosity.

The use of desolubilizer reduces the amount of cationic required.

• AkzoNobel Surface Chemistry’s product portfolio for thickening


Cationic surfactants


R = CH3 or CH2CH2OH

R

N

R

amines

R

N O

R

amine oxides

R

N+ R Cl-

R

quats

Thickening agents and applications


Thickening agents Applications

Ethomeen C/12 Acidic cleaners

Ethomeen O/12, O/12LC Acidic cleaners

Ethomeen T/12, T/12LC Acidic cleaners

Ethomeen HT/12 Acidic cleaners

Ethomeen V18/12 Acidic cleaners

Arquad 16-29 Hydrogen peroxide and acidic cleaners

Arquad T-50 Acidic and alkaline cleaners

Aromox T/12 Acidic, high alkaline and neutral cleaners

Aromox 14D-W970 High alkaline and hypochlorite cleaners

Formulations and thickening performance


Acidic cleaners


Ethomeen O/12 3.7 % HCl act. 5.6 % HCl act. 9.5 % HCl act.

2 % clear separation after1 month not soluble

3 % clear clear 620 cps*

4 % clear clear 920 cps*

Hydrochloric acidEthomeen O/12

* viscosity cps, Brookfield DV-1, Spindle 3, RPM 30, RT

Fatty alcohol ethoxylates with HLB 12-13 can be to modify the rheology ofthe formulation.

Berol 175 (C12-C16 alcohol ethoxylate, 7.5 EO; CAS 68551-12-2)

Acidic cleaners


Hydrochloric acidEthomeen T/12 + Arquad T-50


Toilet bowl cleaner700 cPs viscosity* and good clinging effect

Ethomeen T/12 1.35 %Arquad T-50 1.8 %HCl 9.5 %Water balance

Ethomeen T/12 + Arquad T-50ü efficient thickening system at low and high HCl concentrationü desired viscosity can be obtained by optimizing the ratio and theconcentration of the blendü thixotropic behaviour (shear thinning formulations)

*viscosity cps, Brookfield DV-1, Spindle 2, RPM 30, RT

Acidic cleaners


Formulation A Formulation BCitric acid 5 % 5%Ethomeen O/12 1 % 1.5 %SXS 1 % 1.5 %Water balance balanceViscosity* 400 1020

Citric acidEthomeen O/12, Arquad T-50


Formulation C Formulation DCitric acid 5 % 5%Arquad T-50 2 % 3 %SXS 1.5 % 2 %Water balance balanceViscosity* 290 760

Acidic cleaners


Formulation A Formulation B

Oxalic acid 5 % 5%

Ethomeen O/12 2 %

Ethomeen T/12 1.5 %

SXS 1 % 1 %

Water balance balance

Viscosity* 1290 1010

Oxalic acidEthomeen O/12, Ethomeen T/12


Acidic cleaners


Formulation A Formulation B Formulation C

Sulfamic acid 10 % 10 % 10 %

Ethomeen O/12 2 %

Ethomeen T/12 1.5 %

Arquad T-50 2 %

SXS 1 % 1 % 1 %

Water balance balance balance

Viscosity* 790 820 280

Sulfamic acidEthomeen O/12, Ethomeen T/12, Arquad T-50


Acidic cleaners


Formulation A Formulation B

Phosphoric acid 10 % 10 %

Ethomeen O/12 2 % 2 %

NaCl 2 % 2.5 %

Water balance balance

Viscosity* 680 1260

Phosphoric acidEthomeen O/12


Alkaline cleaners


Formulation A Formulation B Formulation C

NaOH 100 % 5 % 5 % 10 %

Arquad T-50 2 %

Aromox T/12 2 % 2 %

SCS 2 %

Water balance balance Balance

Viscosity* 360 800 890

Sodium hydroxideArquad T-50, Aromox T/12


Bleaching cleaners


Formulation A

NaOCl 15 % 70 %

NaOH 100 % 0.5 %

Aromox 14D-W970 4 %

Na2CO3 4 %

Water balance

Viscosity* 450

Sodium hypochloriteAromox 14D-W970

* viscosity cps Brookfield DV-1, Spindle 34, RPM 50

Formulation B

Hydrogen peroxide 30 % 16.7 %

Sulfamic acid 3 %

Arquad 16-29 5 %

Berol 175 0.1 %

SXS 1.5 %

Water Balance

Viscosity* 300

Hydrogen peroxideArquad 16-29

Summary



Cationic thickeners - Multifunctional benefits

• Moderate to extreme thickening

• Can be used at all pH’s

• Stable in chlorine and hydrogen peroxide bleach

• Fragrance solubilization

• Cleaning and foaming

• Support disinfection

• Corrosion inhibition

Acknowledgements


Anette Thyberg, chemistTS&d Cleaning EMEIA

Disclaimer


All information concerning our products and/or all suggestions for handling and usecontained herein (including formulation and toxicity information) are offered in goodfaith and are believed to be reliable. However, Akzo Nobel Surface Chemistry makes nowarranty express or implied (i) as to the accuracy or sufficiency of such informationand/or suggestions, (ii) as to any product’s merchantability or fitness for a particular useor (iii) that any suggested use (including use in any formulation) will not infringe anypatent. Nothing contained herein shall be construed as granting or extending any licenseunder any patent. The user must determine for itself by preliminary tests or otherwisethe suitability of any product and of any information contained herein (including but notlimited to formulation and toxicity information) for the user’s purpose. The safety of anyformulations described herein has not been established. The suitability and safety of aformulation should be confirmed in all respects by the user prior to use. The informationcontained herein supersedes all previously issued bulletins on the subject mattercovered.

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thickening with cationic surfactants

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