申请人:The B.F. GOODRICH Company
公开号:EP0103297A2
公开(公告)日:1984-03-21
57 Under particular conditions, a cationic ring-opening polymerization of a first oxirane monomer selected from the group consisting of an acyclic glycidyl ether, a cyclic glycidyl ether, and a haloalkyl epoxide, in the presence of a hydroxyl-containing organic material ("HCM"), for example a polymer (referred to herein as a "hydroxyl-prepolymer"), and a particular catalyst, produces a polymerization having "living polymerization" characteristics. The result is that molecular weight (mol wt) of the resulting polymer is directly proportional to the conversion of the monomer to said resulting polymer. This HCM serves as a chain propagator which initially furnishes OH groups as propagation sites. Subsequently, a second oxirane monomer, different from said first, is sequentially polymerized to yield a block copolymer. Branched block copolymers, or linear block copolymers of a HCM and (a) one or more glycidyl ethers, or (b) a haloalkyl epoxide and at least one glycidyl ether, may be prepared. Halogen containing segments of the block copolymers of the invention may be aminated to produce amphophilic polymers.
57 在特定条件下,在含羟基有机物("HCM"),例如聚合物(此处称为 "羟基预聚物") 和特定催化剂的存在下,选自无环缩水甘油醚、环缩水甘油醚和卤代烷基环氧化物组成的 组的第一环氧乙烷单体进行阳离子开环聚合,可产生具有 "活聚合 "特性的聚合反应。其结果是,所得聚合物的分子量(mol wt)与单体转化为所述所得聚合物的转化率成正比。这种 HCM 可作为链延伸剂,最初提供 OH 基团作为链延伸位点。随后,与第一种不同的第二种环氧乙烷单体依次聚合,生成嵌段共聚物。可制备支链嵌段共聚物,或 HCM 和 (a) 一个或多个缩水甘油醚,或 (b) 卤代环氧烷和至少一个缩水甘油醚的线性嵌段共聚物。本发明嵌段共聚物中的含卤素段可进行胺化处理,生成亲两性聚合物。