Wetting agents for improved compatibility in · 2016. 12. 3. · Wetting agents are added to waterborne coatings to increase the wetting of the substrate, to improve the compatibility

WATERBORNE COATINGs

Wetting agents for improved compatibility in

How to select the right wetting agent for a tinted coating system?

Performanceimprovedbythewettingagent

•Increasedtintingstrength

•Reducedrub-outeffects

•Improvedsubstratewettingonmetaland/orpolyethylene

•Reducedwaterabsorption

Possibleinfluencesbythewettingagent

•Impactonstoragestability

•Impactongloss

•Impactonscrubresistance

•Impactonfoaming

Our product recommendation Wettingagentsforacryliclacquers Wettingagentsforemulsionpaints

Producttechnical,safetyandregulatoryinformation

Contents

Wettingagentsareaddedtowaterbornecoatingstoincreasethewettingofthesubstrate,toimprovethecompatibilitywithpigmentsandothercompo-nents,aswellas,toreducerub-outeffects.Atthesametimewettingagentsmighthaveaninfluenceonthecoating’sstoragestability,gloss,scrubresist-anceandfoamingbehavior.

Tintedpaintsarehighlycomplexsystems.Itcanbeatechnicalchallengeforthepaintformulatortoselecttherightwettingagenttodevelopastable,highperformingcoatingformulation,especiallywhenconsideringthattheproduct’ssustainabilityaspects,suchaslowVOC/SVOCorecolabelsuitability,needtobetakenintoaccount.

Theindustrycanchoosefromavarietyofwettingagentchemistries.Asakeysuppliertopaintformulators,Clariantunderstandsthatitisimportanttoapaintformulatortoidentifyinashorttimethemostappropriateproductwhichsolvesformulationproblemswithrespecttoincompatibility.Clarianthasthereforeevaluateditsrangeofwettingagentsforacryliclacquersandemul-sionpaintsaccordingtothefollowingsetofparameters.Ourobjectiveistodeliverourcustomersthebestapplicationsolutionforalong-lastingandsustainablebusiness.

How to select the right wetting agent for a tinted coating system?

INfluENCE ON ThE COATING fORmulATION

PERfORmANCE PARAmETER ACRylIC lACquERs

EmulsION PAINTs

Tinting strength ✓ ✓

Rub-out ✓ ✓

Substrate wetting on metal and polyethylene ✓

Water absorption ✓

Possible influences of wetting agent Storage stability ✓ ✓

Impact on gloss ✓ ✓

Scrub resistance ✓

Foaming behavior ✓ ✓

Performance boosted by wetting agents

Performance improved by the wetting agent

COATING WIThOuT WETTING AGENT COATING WITh WETTING AGENT

Defined as standard

Tinting strength defined as 100%

Comparison against defined standard

To achieve the full tinting strength potential of tinted coatings, the fillers and pigments must be well dispersed during formulation. A re-agglomeration of the particles should be avoided throughout the coating production, storage, application and drying.

A low tinting strength in a coating can be caused by inefficient pigment-dispersion or re-agglomera-tion, as well as, pigment flocculation, which is also known as rub-out.

INCREAsEd TINTING sTRENGTh

Tinting strength increased by up to 10%

good performance •

Tinting strength increased by more than 10%

excellent performance ••

A rub-out test is performed by rubbing the coating film with a finger while it is still moist but already starting to dry.

In doing so the agglomerated pigments are being separated, which leads to an increased tinting strength at the rubbed spot. The bigger the difference in color intensity between the rubbed spot and the unrubbed area, the bigger the rub-out problem.

REduCEd RuB-OuT EffECTs


Defined as standard

Strong rub-out effects


Slight rub-out effects

good performance •

No rub-out

excellent performance ••


Defined as standard

No adhesion of coating on metal substrate



Defined as standard

No adhesion of coating on polyethylene substrate


Substrate wetting enables uniform coating application. Good wetting is a prerequisite for optimal adhesion. Defects in the coating surface such as craters need to be minimized.

substrate wetting on metal

ImPROvEd suBsTRATE WETTING ON mETAl ANd/OR POlyEThylENE

Good adhesion of coating on metal substrate

Good adhesion of coating on polyethylene substrate

Excellent adhesion of coating on metal substrate

Excellent adhesion of coating on polyethylene substrate

good performance • excellent performance ••


substrate wetting on polyethylene

Surfactants have an influence on the film-forming properties of the coating formulation, which can lead to an increased resistance against water absorption.

REduCEd WATER ABsORPTION


Defined as standard

High absorption of water into the coating film


Moderate absorption of water into the coating film

No absorption of waterinto the coating film


Possible influences by the wetting agent


Defined as standard

Stable viscosity, no sedimentation or syneresis


The use of wetting agent can have a negative influence on the paint stability. Paint formulators there-fore try to select the additive with the lowest impact. To evaluate the paint stability a coating is stored at room temperature and at 50°C in the oven for 28 days. Paint stability refers to the interaction of the different ingredients at room temperature compared to the influence of heat storage through measure-ment of viscosity, sedimentation and syneresis.

Coatings are classified or categorized by different gloss levels. There are high gloss, semi-gloss and matte paints available on the market. For a paint formulator it is impor-tant that the addition of a wetting agent to the formulation has little or no influence on the final gloss property. The difference of specular reflection of a coating surface can be measured with a gloss meter.

ImPACT ON sTORAGE sTABIlITy

ImPACT ON GlOss

Moderate influence on viscosity, sedimentation and syneresis

No or marginal influence on viscosity, sedimentation and syneresis

moderate impact • no impact ••

The use of a wetting agent can have a negative impact on the scrub resistance. Paint formulators, therefore, try to select the additive with the lowest influence.

Standard procedures for determining the resistance of wall paints against abrasion by scrubbing are, for example, ASTM D 4213 or DIN EN ISO 11998. These standards describe the various testing meth-ods for components and formulation systems used in waterborne interior wall and ceiling coatings.

Foam formation is caused by the entry of gas into the liquid formulation. This can happen during the production process when the coat-ing is stirred or mixed. One possible source of foam is surfactants in the formulation. The foam behavior can be measured by deter-mining the density of the liquid paint with a density meter. A higher density indicates less air is integrated in the paint formulation.

Impact on scrub resIstance

Impact on foamIng

coatIng wIthout wettIng agent coatIng wIth wettIng agent

Defined as standard

Scrub resistance defined as 100%

Comparison against defined standard:

Reducing film thickness moderately

No change of film thickness or only marginal influence

moderate impact • no impact ••

Our product recommendation

Wetting agents for acrylic lacquers

Clariant’s wetting agents were evaluated against the described performance parameters in a glossy water-based acrylic lacquer that is VOC-free and resistant against blocking.

The wetting agent was used as post additive in the following formulation (position 12). It also possible to use the wetting agent during the pre-mixing process step.

POs PROCEss sTEP

PROduCT fuNCTION

PROduCT dEsCRIPTION PROduCT ACTIvE CONTENT

PROduCT By WEIGhT PERCENT

1 Solvent Water 15.00%

2 Pre-Mixing Binder Pure acrylate MFT 1 ° C; TG -10/50; particle size 0.10 µm

50% 15.00%

3 Dispersing agent Polyacrylate 45% 0.20%

4 Neutralization Ammonia 25% 0.30%

6 Defoamer Organic modified polysiloxane 25% 0.20%

6 Filler Titanium dioxide, rutile-type, coated with Al + Zr

100% 17.50%

7 Binder Pure acrylate MFT 1 ° C; TG -10/50; particle size 0.10 µm

50% 45.00%

8 Thickener Polyacrylate 30% 2.00%

9 Let-down Solvent Water 3.50%

10 Preservative Isothiazolinone MIT + BIT 2.5% 0.10%


12 Post addition Wetting agent e.g. Genapol® ED 3060 100% 1.00%

Grinding

PROduCT NAmE IONICITy

ACTIvE dOsAGE IN ACRylIC lACquER (PvC 20-50)

suPPly dOsAGE IN ACRylIC lACquER (PvC 20-50)

Dispersogen® MT 200 Nonionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ● ● ● ● ●

Dispersogen® PL 30 Nonionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ● ● ● ● ● ●

Dispersogen® AN 200 Anionic 1.2% - 1.5% 1.5% - 1.9% ● ● ● ● ● ● ● ● ● ● ● ●

Dispersogen® ECS Anionic 1.0% - 1.5% 3.3% - 5.0% ● ● ● ● ● ● ● ● ●

Dispersogen® LFS Anionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ● ● ● ● ●

Emulsogen® LCN 118 Nonionic 1.0% - 1.5% 1.3% - 1.9 % ● ● ● ● ● ● ● ● ● ●

Emulsogen® LCN 158 Nonionic 1.0% - 1.5% 1.3% - 1.9 % ● ● ● ● ● ● ● ● ● ● ●

Emulsogen® LCN 287 Nonionic 1.0% - 1.5% 1.4% - 2.1% ● ● ● ● ● ● ● ● ● ● ● ●

Emulsogen® TS 100 Nonionic 1.2% - 1.5% 1.2% - 1.5% ● ● ● ● ● ● ● ● ● ● ● ● ● ●

Emulsogen® TS 200 Nonionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ● ● ● ● ●

Genapol® ED 3060 Nonionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ● ● ● ● ● ●

Genapol® O 080 Nonionic 1.2% - 1.5% 1.2% - 1.5% ● ● ● ● ● ● ● ● ● ●

Genapol® O 100 Nonionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ● ● ● ●

PROduCT RECOmmENdATION

INC

RE

AsE

d

TIN

TIN

G s

TRE

NG

Th

RE

du

CE

d

Ru

B-O

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RO

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mE

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OA

mIN

GLegend

● ● excellentperformance

● goodperformance● ● noimpact● moderateimpact

ImPACT ON fORmulATION

PERfORmANCE BENEfITs

Wetting agents for emulsion paints

Clariant’s wetting agents were evaluated against the described performance parameters in a matte water-based emulsion paint for indoor and outdoor use, categorized under the scrub-resistance class 2 according to ISO 11988.

The wetting agent was used as post additive in the following formulation (position 18). It also possible to use the wetting agent during the pre-mixing process step.

POs PROCEss sTEP

PROduCT fuNCTION

PROduCT dEsCRIPTION PROduCT ACTIvE CONTENT

PROduCT By WEIGhT PERCENT


2 Thickener Cellulose 100% 0.30%

3 Pre-Mixing Neutralizing agent Caustic soda 10% 1.00%

4 Dispersing agent Polyacrylate 45% 0.40%


6 Titanium dioxide, rutile-type, coated with Al + Zr

100% 10.00%

7 Talc d50 = 10µm 100% 8.00%

8 Kaolin clay d50 = 5µm 100% 3.00%

9 Grinding Filler Calcium carbonate PCC d50 = 1 µm 100% 5.00%

10 Calcium carbonate GCC d50 = 2µm 100% 8.00%

11 Calcium carbonate GCC d50= 5 µm 100% 10.00%

12 Calcium carbonate GCC d50= 10 µm 100% 5.00%

13 Binder Pure acrylate MFT 2 ° C; TG 13; particle size 0.10 - 0.5 µm

53% 22.00%

14 Preservative Isothiazolinone MIT + BIT 2.5% 0.20%

15 Let-down Defoamer Organic modified polysiloxane 25% 0.30%

16 Thickener Acrylate 30% 2.50%


18 Post addition Wetting agent e.g. Emulsogen® TS 100 100% 0.75%

PROduCT NAmE IONICITy

ACTIvE dOsAGE IN EmulsION PAINTs (PvC 40-80)

suPPly dOsAGE IN EmulsION PAINTs (PvC 40-80)

Dispersogen® AN 200 Anionic 0.5% - 1.5% 0.6% - 1.9 % ● ● ● ● ● ● ●

Dispersogen® ECS Anionic 0.5% - 1.0% 1.7% - 3.3 % ● ● ● ● ● ●

Dispersogen® MT 200 Nonionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ● ●

Dispersogen® PL 30 Nonionic 0.5% - 1.0% 0.5% - 1.0% ● ● ● ● ● ● ● ● ● ●

Dispersogen® LFS Anionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ● ●

Emulsogen® TS 200 Nonionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ●

Emulsogen® TS 100 Nonionic 0.5% - 1.0% 0.5% - 1.0% ● ● ● ● ● ● ● ● ● ●

Genapol® B Nonionic 1.0% - 1.5% 1.0% - 1.5% ● ● ● ● ● ● ● ●

Genapol® ED 3060 Nonionic 0.5% - 1.5% 0.5% - 1.5% ● ● ● ● ● ● ● ● ● ●

Genapol® O 080 Nonionic 0.5% - 1.0% 0.5% - 1.0% ● ● ● ● ● ● ● ●

Genapol® O 100 Nonionic 0.5% - 1.5% 0.5% - 1.5% ● ● ● ● ● ● ● ● ●

PROduCT RECOmmENdATION

INC

RE

AsE

d T

INTI

NG

sT

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PERfORmANCE BENEfITs

ImPACT ON fORmulATION

Legend

● ● excellentperformance

● goodperformance● ● noimpact● moderateimpact

Product technical, safety and regulatory information

Product name IonIcIty actIve content

aPPearance ecolabel suItabIlIty 1

aPeo-free 2 voc svoc Hazardlabel3

ecotaInlabel

Dispersogen® AN 200 Anionic 80% Brownish, clear liquid ✓ ✓ < 0.1% < 7.0 % label free

Dispersogen® ECS Anionic 30% Yellowish, clear liquid ✓ ✓ < 0.1% < 3.0 % label free

Dispersogen® MT 200 Nonionic 100% Brownish liquid ✓ ✓ < 0.1% < 1.0 % label free

Dispersogen® PL 30 Nonionic 100% Viscous, cloudy liquid ✓ ✓ < 1.0% < 2.0 % label free

Dispersogen® LFS Anionic 100% Brownish, viscous liquid ✓ ✓ < 3.0% < 4.0 % label-free

Emulsogen® LCN 118 Nonionic 80% Clear liquid ✓ ✓ < 1.0% < 2.0%

Emulsogen® LCN 158 Nonionic 80% Clear liquid ✓ ✓ < 1.0% < 1.0%

Emulsogen® LCN 287 Nonionic 70% Clear liquid ✓ ✓ < 1.0% < 1.0% label free

Emulsogen® TS 100 Nonionic 100% Yellow turbid liquid, high viscous

✓ ✓ < 0.1% < 3.0% label free

Emulsogen® TS 200 Nonionic 100% Yellowish paste ✓ ✓ < 0.1% < 3.0 % label free

Genapol® B Nonionic 100% Brownish, viscous liquid

✓ ✓ < 1.0% < 0.8% label free

Genapol® ED 3060 Nonionic 100% Yellowish liquid ✓ ✓ < 1.0% < 1.0% label free

Genapol® O 080 Nonionic 100% Clear, viscous liquid ✓ ✓ < 0.2% < 3.0%

Genapol® O 100 Nonionic 100% White paste ✓ ✓ < 0.1% < 1.2%

tecHnIcal data envIronmental & safety ProPertIes

Legend1 ProductissuitableforpaintsandcolorantsthatcomplywiththecriteriaoftheEuropeanEcoflower(2008/4453/EC;2008/4452/EC),theGerman BlueAngel(RALUZ102:2010andUZ12a11:2015),theScandinavianNordicSwan(2.32008)andtheFrenchNFEnvironment(NF130:2012).2Freeofalkylphenolethoxylates3Hazardlabel(GHS/CLP)isaccordingtotheGloballyHarmonizedSystem(GHS)ofclassification,labelingandpackagingofchemicalsubstances andmixtures.4EcoTain®isClariant‘slabelforsustainabilityexcellenceproductsandsolutions.Itsetsanambitiousbenchmarkanddistinguishesitselfbyexceeding marketstandardswhileconsideringtheoverallbenefitsandimpactsacrosstheentirelifecycle.EachproductlabeledasEcoTain®goesthrougha systematic,in-depthscreeningprocessusing36criteriainallthreesustainabilitydimensions,i.e.social,environmentalandeconomic.

Regulatorystatusasof01.01.2016

PROduCT NAmE REACh (status

Clariant Eu)

AICs

(Australia)

dsl

(Canada)

ENCs

(Japan)

IECsC

(China)

KECI

(Korea)

NECI

(Taiwan)

NzIOC(New

zealand)

PICCs

(Philippines)

TsCA

(usA)

Dispersogen® AN 200 + - - - - - - - - -

Dispersogen® ECS + + + + + + + + + -

Dispersogen® MT 200 + + - + + + - + - +

Dispersogen® PL 30 + - - - - - - + - +

Dispersogen® LFS + + + + + + + + + +

Emulsogen® TS 100 + + + + + + + + - +

Emulsogen® TS 200 + + + + + + + + + +

Emulsogen® LCN 118 + + + + + + + - - +

Emulsogen® LCN 158 + + + + + + + - - +

Emulsogen® LCN 287 + + + + + + + - - +

Genapol® B + + + + + + + + + +

Genapol® ED 3060 + + + + + + + + + +

Genapol® O 080+

+ + + + + + + + +

Genapol® O 100 + + + + + + + + + +

REGulATORy INfORmATION

This information corresponds to the present state of our knowledge and is intended as a general descrip-tion of our products and their possible applications. Clariant makes no warranties, express or implied, as to the information’s accuracy, adequacy, sufficiency or freedom from defect and assumes no liability in connection with any use of this information. Any user of this product is responsible for determining the suitability of Clariant’s products for its particular application. * Nothing included in this information waives any of Clariant’s General Terms and Conditions of Sale, which control unless it agrees otherwise in writing. Any existing intellectual/industrial property rights must be observed. Due to possible changes in our products and applicable national and international regulations and laws, the status of our products could change. Material Safety Data Sheets providing safety precautions, that should be observed when handling or storing Clariant products, are available upon request and are provided in compliance with applicable law. You should obtain and review the applicable Material Safety Data Sheet information before handling any of these products. For additional information, please contact Clariant.® Trademark of Clariant registered in numerous countries.

* For sales to customers located within the United States and Canada the following applies in addition: NO EXPRESS OR IMPLIED WARRANTY IS MADE OF THE MERCHANTABILITY, SUITABILITY, FITNESS FOR A PARTICULAR PURPOSE OR OTHERWISE OF ANY PRODUCT OR SERVICE.

© 2016 Clariant International AG, Rothausstrasse 61, 4132 Muttenz, Schweiz ® Product and service marks protected by Clariant

CLARIANTINTERNATIoNALLTd

BUINdUSTRIAL&CoNSUmERSPECIALTIES

Rothausstrasse 614132 MuttenzSwitzerland

Sales & MarketingPhone: +41 61 469 7704

Application DevelopmentPhone: +49 69 305 372 95

www.CLARIANT.Com

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Documents

Wetting agents for improved compatibility in · 2016. 12. 3. · Wetting agents are added to waterborne coatings to increase the wetting of the substrate, to improve the compatibility