Patent ID: 11866563
Assignee: BASF COATINGS GMBH
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B | IPC B  C

Claim 0:
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 %.