BYK®-377 is a polyether modified polydimethylsiloxane. The product improves substrate wetting and leveling at low dosages. In most cases only half the amount of a conventional silicone is needed to optimize substrate wetting, slip and tape release of UV curable, 2 pack PU, polyester/melamine and aqueous topcoats. Due to the good compatibility in common binder systems, the production of highly transparent varnishes is possible. Typically it does not cause turbidity in clearcoats. Sanding is required for recoat adhesion. The OH groups of BYK-377 can react with polyisocyanates
BYK has an established history of innovation such as being the first additive manufacturer to begin using Controlled Polymerization Technology (CPT), launching the first rheology-modified wax emulsion, and being one of the first companies to use nanotechnology for improving Coatings properties. BYK invests approximately 7.5% of its earnings in R&D—three times more than the industry average.
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