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| BYK-320 |
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| Solution of a polyether modified methylalkylpolysiloxane copolymer |
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Silicone levelling additive with defoaming action.
It improves the surface properties of solvent-based coatings, with particular emphasis upon levelling.
Causing only a slight surface tension reduction, in contrast to most silicone additives it does not stabilize foam and can even impart defoaming action.
BYK-320 is particularly suitable for non-polar to medium-polar paint systems.
Its defoaming activity rises with increasing coating polarity.
BYK-320 increases surface slip and thus improves scratch and mar resistance.
Formation of B?ard cells is prevented and orientation of flatting agents is improved.
In automotive and industrial coatings, BYK-320 will not exhibit problems with ghosting and telegraphing.
To avoid these effects, the additive must be present in the paint which has to be overcoated. |
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Density at 20'C in g/ml : 0.86
Non-volatile matter in : 52
Flash point 'F : 38
Solvents : White spirits/methoxy-propylacetate 9/1 |
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