A polyester resin for an antifouling paint which contains a structural unit of the formula (I)
wherein R1 is H or alkyl having 1 to 3 carbon atoms, R2 is H or methyl and n is an integer of 0 - 4, in a proportion of not less than 90 mol% and a metal in the main chain at a concentration of 10 - 300 eq/106 g, and which has an acid value of 20 - 1000 eq/106 g. A combined use of the polyester resin with a natural antifouling agent affords a paint with extremely less burden on the marine environment.
一种用于防污漆的聚酯
树脂,它含有式(I)的结构单元
其中 R1 为 H 或具有 1 至 3 个碳原子的烷基,R2 为 H 或甲基,n 为 0 至 4 的整数,比例不小于 90 摩尔%,主链中的
金属浓度为 10 - 300 当量/106 克,酸值为 20 - 1000 当量/106 克。将这种聚酯
树脂与天然防污剂结合使用,可生产出对海洋环境负担极小的涂料。