C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 175/00 (2006.01) C09D 133/04 (2006.01) C09D 157/00 (2006.01) C09D 175/02 (2006.01) C09D 175/04 (2006.01) D06M 15/564 (2006.01) D06N 3/14 (2006.01) C08L 75/00 (2006.01)
Patent
CA 2069720
Mo3744 LeA 28,373 COATING COMPOSITIONS FOR COATINGS THAT ARE PERMEABLE TO WATER VAPOR AND A PROCESS FOR THEIR PREPARATION ABSTRACT OF THE DISCLOSURE The present invention relates to coating compositions containing (A) 70 to 98% by weight, based on the sum of components (A) and (B), of (a) isocyanate-free polymers of ethylenically unsaturated monomers and/or polyurethanes or blocked isocyanate prepolymers, and (b) optional organic solvents, wherein component (A) contains no significant quantities of groups capable of reacting with component (B) or starting materials thereof and has a viscosity (at 23°C) of 2000 to 100,000 mPa?s; (B) 2 to 30% by weight, based on the sum of components (A) and (B), of a polyaddition product prepared in and dispersed in component (A), wherein the polyaddition product is a polyurethane, polyurethane urea, polyurea. or mixture thereof, containing ionic groups and/or potentially ionic groups in a quantity corresponding to from 0.5 to 20 milliequivalents per 100 g of component (B) but containing substantially no free isocyanate, hydroxyl, or amino groups; and (C) optional cross-linking agents; in which component (B) is formed in situ in component (A). Le A 28 373
Noll Klaus
Pedain Josef
Schutze Detlef-Ingo
Thoma Wilhelm
Aktiengesellschaft Bayer
Swabey Ogilvy Renault
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