C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 161/20 (2006.01) C09D 167/06 (2006.01)
Patent
CA 2074366
The present invention relates to acid-curing aqueous coating compositions, in particular for the coating of finish sheeting and continuous edging, which contain aminoplast resin and hydroxyl-containing polyesters, wherein the polyester is prepared from a) 33 to 55 mol% of a dicarboxylic acid component obtained from a1) 50 to 100 mol% of olefinically unsaturated aliphatic dicarboxylic acids a2) 0 to 50 mol% of saturated aliphatic dicarboxylic acids a3) 0 to 50 mol% of saturated aliphatic dicarboxylic acids and b) 67 to 45 mol% of a polyol component obtained from b1) 20 to 90 mol% of at least one monomeric and/or oligomeric glycol having 2 to 4 carbon atoms per glycol segment and number average molecular weights smaller than 200 - 42 - b2) 5 to 30 mol% of at least one polymeric glycol having 2 to 4 carbon atoms per glycol segment and number average molecular weight between 300 and 1000 and b3) 0 to 70 mol% of at least one polyol having 2 to 4 OH groups and 4 to 10 carbon atoms per molecule, except the glycols used as component b1.
Hintze-Bruning Horst
Roll Joachim
Basf Lacke + Farben Aktiengesellschaft
Fetherstonhaugh & Co.
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