Research and Development on Preparation of Newly Basic Resins for Paint: Multi-Functional Graft Copolymers Having Methacrylates as Grafts.

制备了多功能、低粘度的接枝共聚物，开发了新型涂料用碱性树脂。结果具体说明如下1。1-苯基-1-（4-乙烯基苯基）乙烯（PVPE）和对甲基苯乙烯（PMS）在-78℃高真空甲苯中聚合，以三氟甲基磺酸为引发剂，转化率为100%，得到共聚物（聚合物骨架）用n-BuLi对PVPE的乙烯基进行金属化，得到了一种转化率为80%的多功能大分子引发剂。大分子引发剂与甲基丙烯酸甲酯在高真空条件下在甲苯中反应生成接枝共聚物，接枝末端具有醇和/或酸等官能团。以1,1-二苯乙烯为原料，在甲苯中阴离子制备了聚氨基苯乙烯-b- mma嵌段共聚物。这一结果对制备接枝中含有氨基的接枝共聚物是有益的。我们使用大型玻璃器皿（用于聚合的50升烧瓶）进行了接枝共聚物（5kg）的大规模制备。接枝共聚物与异氰酸酯交联，得到了良好的涂膜效果。从本课题的研究结果来看，含有聚丙烯酸正丁酯的接枝共聚物在抗冲击涂料中应该表现出更好的用量。

We attained our object: we prepared the graft copolymers having multifunctions and low viscosity to develop newly basic resins for paint. The results are specifically described below.1. 1-Phenyl-1-(4-vinylphenyl)ethylene(PVPE) and p-methylstyrene(PMS) were polymerized in toluene at -78 c under high vacuum to give copolymers ( Polymer backbones) in 100% conversion, when trifluoromethylsulfonic acid was used as an initiator.2 Vinyl group of PVPE for the polymer backbone was metalized by n-BuLi to give a multi-functionally macromolecular initiator in 80% conversion.3. The macromolecular initiator reacted with methyl methacrylate in toluene under high vacuum to give graft copolymers, having functional groups such as alcohols and/or acids at the ends of the grafts.4. Poly(aminostyrenes-b-MMA) block copolymers were anionically prepared in toluene by use of 1,1-diphenylethylene. This result is useful to prepare graft copolymers having amino groups in the grafts.5. We carried out a large-scaled preparation of the graft copolymers(5kg) by use of large-scaled glasswares(50 liter flask for polymerization).6. The graft copolymers were cross-linked by isocyanate compounds to give coating films, showing good quantity in brilliance. from the results of this subject, graft copolymers having poly(n-buthylacrylate) should show better quqntity in impact-resistant paint.