CPC C08J 7/043 (2020.01) [B32B 27/00 (2013.01); C08G 63/668 (2013.01); C08J 7/046 (2020.01); C09D 151/08 (2013.01)] | 12 Claims |
1. A pigmented aqueous basecoat material, comprising
a polyether-based reaction product prepared by reacting
(a) at least one cyclic carboxylic anhydride comprising a free carboxylic acid group and/or a halide of a carboxylic acid group
with
(b) at least one polyether of formula (I)
wherein
R is a C3 to C6 alkylene radical and n is selected accordingly such that the polyether (b) possesses a number-average molecular weight of from 1000 to 4000 g/mol,
a molar ratio of (a) to (b) ranges from 0.7/2.3 to 1.6/1.7,
the polyether-based reaction product has an acid number of 5 to 50 mg KOH/g, and
a sum total of weight-percentage fractions, based on a total weight of the basecoat material, of all polyether-based reaction products is 0.1 to 5.0 wt %.
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