C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 167/00 (2006.01) C09D 129/02 (2006.01)
Patent
CA 2482729
An aqueous coating composition containing A) one or more water-dilutable polyester polyols having an OH number of from 20 to 300 mg KOH/g and an acid number of from 20 to 80 mg KOH/g, obtained by reacting a) 49 to 40 mol% of a carboxylic acid component containing a1) one or more aliphatic, cycloaliphatic, araliphatic and/or aromatic carboxylic acids with a COOH functionality >= 2 and a2) optionally, aromatic, cycloaliphatic and/or aliphatic monocarboxylic acids with b) 51 to 60 mol% of an alcohol component containing b1) one or more aliphatic, cycloaliphatic and/or araliphatic polyols with Mn of from 62 to 272 g/mol and an average OH functionality >= 2 and b2) optionally, aliphatic, cycloaliphatic and/or araliphatic monoalcohols, B) one or more OH-reactive crosslinkers C) water, D) neutralizing agents and E) optionally solvents, auxiliaries and additives. The aqueous coating compositions can be used for coating metal substrates, such as cans.
Baumbach Beate
Kuettner Wolfram
Wamprecht Christian
Bayer Materialscience Ag
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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