C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
117/195, 400/741
C09D 175/14 (2006.01) B32B 27/40 (2006.01) C08F 299/06 (2006.01) C08G 18/67 (2006.01) C08J 3/07 (2006.01) C09D 175/16 (2006.01)
Patent
CA 2040521
The present invention relates to aqueous solutions or dispersions of oligourethanes having a pH of 6.0 to 8.5 wherein the dissolved or dispersed oligourethanes contain carboxyl groups at least partially neutralized with ammonia and have i) a double bond content in the form of (meth)acryloyl groups (expressed as C=C, molecular weight 24) of 3 to 15% by weight and ii) a content of carboxyl groups, including the carboxyl groups neutralized with ammonia, which corresponds to an acid value of 20 to 100. The present invention also relates to a process for the preparation of these aqueous solutions or dispersions of oligourethanes and to their use for the preparation of coated substrates.
Casselmann Holger
Hoehne Klaus
Kremer Wolfgang
Meixner Jurgen
Muller Manfred
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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