A marine paint capable of becoming smoother in relatively moving sea-water comprises a film-forming copolymer and a metalliferous pigment which is sparingly soluble in sea-water. The copolymer comprises 20-80 per cent by weight of units of a quinolinyl or substituted quinolinyl ester of an olefinicaily unsaturated carboxylic acid with the balance of the copolymer being units of at least one olefinically unsaturated comonomer or comprises 10 to 80 per cent by weight of (a) units of a quinolinyl or substituted quinolinyl ester of an olefinically unsaturated carboxylic acid, up to 60 per cent by weight of (b) units of a triorgano tin salt of an olefinically unsaturated carboxylic acid, with (a) and (b) together forming 20 to 80 per cent by weight of the copolymer, and the balance of the copolymer being units of at least one olefinically unsaturated comonomer.
                            一种能在相对流动的海
水中变得更光滑的船用涂料由一种成膜共聚物和一种难溶于海
水的
金属
颜料组成。共聚物包括 20-80%(按重量计)的烯烃不饱和
羧酸的
喹啉基或取代
喹啉基酯单元,共聚物的其余部分为至少一种烯烃不饱和共聚单体单元,或包括 10-80%(按重量计)的 (a) 烯烃不饱和
羧酸的
喹啉基或取代
喹啉基酯单元、(b)烯烃不饱和
羧酸的三
有机锡盐单元,按重量计,不超过 60%,其中(a)和(b)共同构成共聚物的 20%至 80%,共聚物的其余部分为至少一种烯烃不饱和共聚单体的单元。