C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
C08G 63/20 (2006.01) C08G 18/68 (2006.01) C08G 63/52 (2006.01) C09D 167/06 (2006.01) C09D 175/06 (2006.01) C09D 175/14 (2006.01)
Patent
CA 2166656
The present invention relates to polyester polyols having a hydroxyl number of 60 to 400, which are esterification products of a) an alcohol component containing one or more aliphatic or cycloaliphatic alcohols having at least 3 hydroxyl groups and 3 to 8 carbon atoms with b) a carboxylic acid component containing itaconic acid, maleic acid, their anhydrides and/or fumaric acid, provided that at least 10 mole% of either component a) or component b) is an aliphatic or cycloaliphatic, saturated or unsaturated monoalcohol or mono- carboxylic acid having 1 to 18 carbon atoms. The present invention also relates to two-component polyurethane coating compositions containing these polyester polyols and lacquer polyisocyanates as the binder and to their use for coating substrates, in particular automotive substrates.
Sonntag Michael
Wamprecht Christian
Aktiengesellschaft Bayer
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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