Coating composition and process for preparing synthetic resin shaped articles by using same
申请人:MITSUBISHI RAYON CO., LTD.
公开号:EP0057906A1
公开(公告)日:1982-08-18
A shaped article of synthetic resins, such as polydiethylene glycol bisallylcarbonate, is coated with the following coating composition and then irradiated with ultraviolet rays, whereby the coating composition deposited on the shaped article is cured to form a coating film having an excellent abrasion resistance, surface smoothness, adhesion to the substrate resin, flexibility, heat resistance, solvent resistance and durability. The coating composition comprised of (a) a mixture of, based on the weight of the mixture, (i) 25 - 99.95 wt.% of at least one polyfunctional monomer having at least three acryloyloxy or methacryloyloxy groups, (ii) 0 - 50 wt.% of at least one mono- or bi-functional monomer having one or two polymerizable unsaturated groups and (iii) 0.05 - 25 wt.% of at least one organic acid which has at least one halogen substituent (fluorine, chlorine or bromine) and which is liquid at normal temperature and pressure, and (b) 0.01 - 10 wt. parts, based on 100 wt. parts of said mixture, of a photosensitizer. The coating compositon may contain 0.05 - 25 wt.% of at least one compound having an acrylamide or methacrylamide group and a hydroxyl group or groups.
在合成树脂(如聚二甘醇双烯丙基碳酸酯)成型品上涂覆以下涂层组合物,然后用紫外线照射,沉积在成型品上的涂层组合物由此固化,形成具有优异耐磨性、表面光滑度、与基底树脂的粘附性、柔韧性、耐热性、耐溶剂性和耐久性的涂膜。涂层组合物包括 (a) 以混合物重量为基准,(i) 25 - 99.95 重量份的至少一种具有至少三个丙烯酰氧基或甲基丙烯酰氧基的多官能团单体,(ii) 0 - 50 重量份的至少一种具有一个或两个可聚合不饱和基团的单官能团或双官能团单体和 (iii) 0.(b) 0.01 - 10 重量份的光敏剂(以 100 重量份所述混合物为基准)。涂层复合物可含有 0.05 - 25 重量份的至少一种具有丙烯酰胺或甲基丙烯酰胺基团和一个或多个羟基的化合物。