Data Sheet S202 05/08

BYK-310 BYK-330 BYK-344

Silicone Surface Additives with a Strong Reduction of Surface Tension

Composition

BYK-310 Solution of a polyester modified polydimethylsiloxane

BYK-330BYK-344

Solution of a polyether modified polydimethylsiloxane

Typical Properties

Density at 20°C in g/ml Non-volatile matter in % Flash point in °C

BYK-3100,91 25 25Solvents: Xylene

BYK-3300,98 51 45Solvents: Methoxypropylacetate

BYK-3440,94 52,3 23Solvents: Xylene/Isobutanol 4/1

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

Recommended Levels

% additive (as supplied) based upon

total formulation

BYK-310 0,05 - 0,3 in solvent-free systems up to 0,5

BYK-330 0,1 - 0,5 –

BYK-344 0,1 - 0,3 –

Incorporation and Processing Instructions

These additives can be incorporated during any stage of the production process including post-addition.

Data Sheet S20205/08

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

This information is given to the best of our knowledge. Because of the multitude of formulations, production and application conditions, all the above-mentioned statements have to be adjusted to the circumstances of the processor. No liabilities, including those for patent rights, can be derived from this fact for individual cases.

This data sheet replaces all previous issues - Printed in Germany

BYK-Chemie GmbHP.O. Box 10 0245 46462 WeselGermanyTel +49 281 670-0 Fax +49 281 65735

info@byk.comwww.byk.com/additives

Applications

Solvent-borne systems Solvent-free systems

BYK-310

BYK-330

BYK-344

recommended suitable

Function

These additives provide a strong reduction of surface tension of paint systems. Therefore, they especially improve substrate wetting and avoid cratering. Additionally, surface slip and gloss are increased.In comparison to silicone oils these additives are „user friendly“. Through a series of tests, however, it should be ascertained as to whether foam is being stabilized by these additives before large-scale application starts. Also, the recoatability and cratering should be evaluated.

Special Features and Benefits

BYK-310

BYK-310 is a heat resistant silicone additive, i.e., in contrast to conventional (polyether modified) silicones, it shows no thermal decomposition at temperatures between 150°C/302°F and 230°C/446°F. Thus, upon the recoating baking systems, no loss in adhesion and no surface defects occur. (Note: The aforementioned defects can be caused by the decomposition products of conventional silicones at temperatures above 150°C/302°F.)The effective substance of BYK-310 is listed in title 21 CFR (food and drugs) § 175.300, Indirect Food Additives, Adhesives and Components of Coatings. The usage level may not exceed 0,1% (delivery form based on total formulation) and the film thickness may not exceed 12 µm.

BYK-330

BYK-330 improves flow and leveling, scratch resistance, flooding and floating and orientation of matting agents. BYK-330 has a strong stabilizing effect on the surface, so that the sensitivity of the coating systems to foreign particles and strong air-drafts is considerably reduced. BYK-330 prevents surface defects in curtain coatings applied to pre-heated wood panels.

BYK-344BYK-344 increases the surface slip and reduces the surface tension to provide excellent substrate wetting. It also improves anti-blocking properties. In new formulations, it should be replaced by BYK-306 (see data sheet S201).

Special Note

BYK-310The use of thermostable silicone additives such as BYK-310 in coil-coatings (or similar systems) can lead to a migration of the silicone to the reverse side of the sheet or roll. This effect depends upon the pressure within the stack of sheets (or weight of the roll) and upon the system and binder used.

BYK-344 The additive contains fluoro-modified polymer.

Storage and Transportation

BYK-310Separation or turbidity may occur at temperatures below 5°C.Warm to 20°C and mix well.