申请人:SUMITOMO CHEMICAL COMPANY, LIMITED
公开号:EP0276111A2
公开(公告)日:1988-07-27
There are copolymerized, by weight, a) 40-99% of ethylene and b) 60-1% of a dialkylaminoalkyl acrylamide of the formula
where R₁ is H or -CH₃, R₂ and R₃ are each C1-4 alkyl and n is 2-4 (e.g. dimethylaminoethyl acrylamide), in a reactor under pressure of 500-3,000 kg/cm² and a temperature of 100-300°C in the presence of a radical polymerisation initiator (O₂, a peroxide or azo compound) in amount of 5-3,000 parts per million parts of ethylene. Up to 20% of c) another ethylenically unsaturated monomer (e.g. methyl acrylate, vinyl acetate) can also be copolymerised.
The resultant copolymer contains the components in proportions of a) 40-95%, b) 60-5% and c) 0-20%, and has a number average molecular weight determined from a GPC chart of 5,000-50,000.
The copolymer can be molded directly or 100 parts can be mixed with 1-20 parts of a poly(α-olefin) (e.g. polypropylene) to form a spinnable and dyeable mixture, or can be converted by HCl to a quaternary salt, reacted with epichlorohydrin and an alkylolamine to form a stable cationic aqueous dispersion which is coated on a substrate to form a transparent,flexible and tough coating.
按重量计,a) 40-99%的乙烯和 b) 60-1%的二烷基氨基烷基丙烯酰胺共聚,其式为
其中 R₁ 为 H 或 -CH₃,R₂ 和 R₃ 均为 C1-4 烷基,n 为 2-4(例如二甲基氨基乙基丙烯酰胺),在反应器中,压力为 500-3000 kg/cm²,温度为 100-300℃,存在自由基聚合引发剂(O₂、过氧化物或偶氮化合物),其用量为每百万 份乙烯中 5-3000 份。c) 另一种乙烯基不饱和单体(如丙烯酸甲酯、乙酸乙烯酯)也可进行共聚,最高含量为 20%。
由此产生的共聚物含有 a) 40-95%、b) 60-5% 和 c) 0-20% 的组分,其平均分子量由 GPC 图谱确定为 5000-50000。
这种共聚物可以直接成型,也可以 100 份与 1-20 份聚(α-烯烃)(如聚丙烯)混合,形成可纺丝和可染色的混合物,还可以用盐酸转化为季盐,与环氧氯丙烷和烷基醇胺反应,形成稳定的阳离子水分散液,涂覆在基材上,形成透明、柔韧和坚固的涂层。