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Data Sheet PSIssue 02/0

BYK-302 BYK-331

Silicone Surace Additives with Medium Reduction o Surace Tension o Printing Inkand Overprint Varnishes

Composition

BYK-302

BYK-331Polyether modifed polydimethylsiloxane

Typical Properties

Weight/U.S. gal. (lb.gal.) at 68F Non-volatile matter in % Flash Point in F

BYK-302 8.62 > 95.0 > 212

BYK-331 8.62 > 98.0 > 212

Values indicated in this data sheet describe typical properties and do not constitute specifcation limits.

Recommended Levels

% additive (as supplied) based upon total ormulation

BYK-302

BYK-3310.025 - 0.2

Incorporation and Processing Instructions

The additive can be incorporated during any stage o the production process, including post-addition.

To acilitate incorporation, it may be helpul to reduce the additives with suitable solvent(s).

Applications

Aqueous systems Solvent-borne systems UV-systems

BYK-302

BYK-331

recommended

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Data Sheet PS1Issue 02/08

ANTI-TERRA, BYK, BYK-DYNWET, BYK-SILCLEAN, BYKANOL, BYKETOL, BYKOPLAST, BYKUMEN, DISPERBYK, DISPERPLAST, LACTIMON, NANO-BYK, SILBYK and VISCOBYK are registered trademarks o BYK-Chemie.AQUACER, AQUAFLOUR, AQUAMAT, CERACOL, CERAFAK, CERAFLOUR, CERAMAT, CERATIX and MINERPOL are registered trademarks oBYK-Cera.

The inormation and data stated herein, although in no way guaranteed, are based upon tests and reports considered to be reliable and are believed to beaccurate. No warranty, either expressed or implied, is made or intended. Use by a customer should be based upon its own investigations and appraisals. Anyrecommendation should not be construed as an invitation to use a material in inringement o patents.

This data sheet replaces all previous issues - Printed in USA

BYK USA Inc.524 South Cherry StreetP.O. Box 5670Wallingord, CT 06492USATel 203 265-2086Fax 203 284-9158

cs.usa@byk.com

www.byk.com/additives

Function

These additives provide a medium reduction o the surace tension o paint systems.

They increase surace slip as well as improve leveling and gloss. Silicone additives prevent ormation o Bnard cells.

These additives also improve substrate wetting and give anti-blocking properties.

Special Features and Benefts

BYK-302BYK-302 is especially used in systems in which solvent-ree additives are requested or where a requirement or a

special solvent exists. It is used in all aqueous, solvent-borne and solvent-ree printing inks.

BYK-331 BYK-331 is used in all solvent-ree and aqueous printing inks and overprint varnishes.

Special Note

In comparison to silicone oils these additives are user riendly exhibiting a minimum o undesirable side eects when used at

the correct dosage. Through a series o tests, however, it should be ascertained as to whether oam is being stabilized by these

additives beore large-scale application starts. Also, the recoatability and cratering should be evaluated.