POLYMER IN MULTICOAT COLOR AND/OR EFFECT PAINT SYSTEMS

摘要

The present invention relates to a polymer, preparable by reacting
at least one polymer, preparable by reacting (a) dimer fatty acids with at least (b) one polyether having a C3 to C6 alkylene radical and a number-average molecular weight of 450 to 2200 g/mol, components (a) and (b) are used in a molar ratio of 0.7/2.3 to 1.3/1.7, and the resulting polymer has a number-average molecular weight of 1500 to 5000 g/mol and an acid number <10 mg KOH/a, at least one polyether with a C3 to C6 alkylene radical and with a number-average molecular weight of 250 to 3000 g/mol, at least one compound having at least one anionic group and/or at least one functional group capable of forming anions,and at least one, more particularly at least two, isocyanate-reactive functional groups, at least one polyisocyanate, andoptionally at least one monool or diol, at least one compound having more than two isocyanate-reactive functional groups, and optionally neutralizing the groups of component (C) that are capable of forming anions.

主权项

1.: A polymer preparable by reacting:
(A) at least one polymer, preparable by reacting
(a) dimer fatty acids with(b) at least one polyether of general structural formula (I): wherein R is a C3 to C6 alkylene radical and n is selected so that said polyether has a number-average molecular weight of 450 to 2,200 g/mol, wherein components (a) and (b) are used in a molar ratio of 0.7/2.3 to 1.3/1.7, and wherein the resulting polymer has a number-average molecular weight of 1,500 to 5,000 g/mol and an acid number <10 mg KOH/g, (B) at least one polyether of general structural formula (II) wherein R is a C3 to C6 alkylene radical and n is selected so that said polyether has a number-average molecular weight of 250 to 3,000 g/mol, (C) at least one compound having at least one anionic group and/or at least one functional group capable of forming anions, and having at least one isocyanate-reactive functional group(s), the compound being different from (A) and (B), (D) at least one polyisocyanate, and (E) optionally at least one monool or diol which is different from (A), (B) and (C), (F) at least one compound having more than two isocyanate-reactive functional groups, wherein the compound differs from (A), (B) and (C), and optionally neutralizes anionic group(s) of component (C).