C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 75/04 (2006.01) C08G 18/62 (2006.01) C08G 18/78 (2006.01) C09D 175/04 (2006.01) C09K 3/10 (2006.01)
Patent
CA 2167667
The present invention relates to a solvent-free binder composition for preparing hard coatings which contains a) a polyisocyanate component having an NCO content of 10 to 35 wt.% and containing one or more organic polyisocyanates and b) a hydroxy-functional polyacrylate component having a hydroxyl group content of 10.1 to 20 wt.% and a viscosity at 23C of 200 to 20,000 mPa.s, wherein components a) and b) are present in an amount sufficient to provide an NCO/OH equivalent ratio of 0.5:1 to 2.0:1. The present invention also relates to the use of this binder mixture as the binder in solvent-free two-component polyurethane coating and sealing compositions.
Hovestadt Wieland
Rettig Rainer
Ruttmann Gerhard
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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