申请人:TORAY INDUSTRIES, INC.
公开号:EP0113252A2
公开(公告)日:1984-07-11
A block copolyamide having effectively improved impact strength is obtained by polymerizing a mixture comprising substantially from about 50 to about 95 parts by weight of lactam and from about 50 to about 5 parts by weight of polyol in the presence of a catalyst for an anionic polymerization and an activator represented by the following formula (I);
wherein A denotes a bifunctional organic residue having at least one kind of heteroatom selected from the group consisting of N, 0, S, F, Cl, Br and I, Y and Y' denote an acyl group selected from the group consisting of
and n and n' denote an integer of 3 to 11 or by polymerizing, in the presence of a catalyst for anionic polymerization, a mixture comprising substantially from about 50 to about 95 parts by weight of lactam and from about 5 to about 50 parts by weight of prepolymer obtained by a reaction of polyol and an activator represented by the above formula (I), wherein A denotes a bifunctional aromatic residue having at least one halogen atom attached to the aromatic ring.
通过在阴离子聚合催化剂和下式(I)代表的活化剂存在下,聚合基本上由约 50 至约 95 份(重量)内酰胺和约 50 至约 5 份(重量)多元醇组成的混合物,可获得有效提高冲击强度的嵌段共聚多酰胺;
其中 A 表示双官能团有机残基,该残基具有至少一种选自 N、0、S、F、Cl、Br 和 I 所组成的组的杂原子,Y 和 Y'表示选自以下组成的组的酰基
和 n 和 n'表示 3 至 11 的整数,或在阴离子聚合催化剂存在下,聚合一种混合物,该混合物大体上包括 50 至 95 份(按重量计)的内酰胺和 5 至 50 份(按重量计)的预聚物,该预聚物是由多元醇和上式(I)所代表的活化剂反应而得,其中 A 表示双官能芳香残基,该芳香环上至少连接有一个卤素原子。