C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/132, 400/742
C08G 18/78 (2006.01) C08G 18/08 (2006.01) C08G 18/10 (2006.01) C08G 18/28 (2006.01) C08G 18/79 (2006.01) C09D 175/04 (2006.01)
Patent
CA 2034921
The present invention relates to a process for the preparation of a coating composition by a) treating moisture-containing auxiliaries and additives at 60 to 120°C with urethane group-containing isocyanates having (cyclo)aliphatically bound isocyanate groups, an (average) NCO functionality of 0.8 to less than 2.0 and an NCO content of 5 to 17% by weight and b) after completion of the isocyanate/water reaction, combining the mixture obtained in step a) with isocyanate prepolymers having (cyclo)aliphatically bound isocyanate groups. The present invention also relates to the coating composition obtained by this process and to a composition containing urethane group-containing isocyanates having (cyclo)aliphatically bound isocyanate groups, an (average) NCO functionality of 0.8 to less than 2.0 and an NCO content of 5 to 17% by weight and moisture-containing auxiliaries or additives.
K"onig Klaus
Pedain Josef
Schonborn Manfred
Schwindt Jurgen
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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