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

我们实现了目标：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。具体结果如下：1.以三氟甲基磺酸为引发剂，1-苯基-1-(4-乙烯基苯基)乙烯(PVPE)和对甲基苯乙烯(PMS)在-78℃的高真空下在甲苯中聚合，得到转化率为100%的共聚物(聚合物骨架)。该大分子引发剂在高真空下与甲基丙烯酸甲酯在甲苯中反应，得到接枝共聚物，接枝末端含有醇和/或酸等官能团。以1，1-二苯乙烯为原料，在甲苯中用阴离子法制备了聚氨基苯乙烯-b-甲基丙烯酸甲酯嵌段共聚物。这一结果对于制备接枝物中含有氨基的接枝共聚物是有用的。利用大型玻璃器皿(50升烧瓶聚合)进行了接枝共聚物(5公斤)的规模化制备。用异氰酸酯类化合物对接枝共聚物进行交联化，制得涂膜，光泽度好。从本课题的结果来看，含有聚丙烯酸丁酯的接枝共聚物在抗冲击涂料中应该表现出更好的质量。

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.