| 摘要 |
A method for the production of single-component polyurethane lacquers which comprises: reacting (1) a polyester having an OH-functionality of at least 2, an OH-count of 70-150 mg KOH/g and a molecular weight of about 800-2500, derived from (A) an acid selected from the group consisting of ortho-, meta-, and para-dicarboxylic acids, 1,2,5-bezenetricarboxylic acid, 1,3,5-benzenetricarboxylic acid, C1-C4 alkyl esters thereof and mixtures thereof and (B) a glycol with a heteroatom-free chain which chain consists of 5-8 carbon atoms with (2) a dimethylketoxime-blocked cycloaliphatic polyisocyanate; wherein the equivalence ratio of said OH groups to said blocked isocyanate groups is 1.0:0.7 to 1.0:1.1. |
