申请人:Sumitomo Chemical Company, Limited
公开号:EP2592113A1
公开(公告)日:2013-05-15
A composition can be provided with superior adhesiveness toward adherends, for example, made of plastic (in particular, polypropylene, and the like). The composition includes the following (A) and (B). (A): Polymer (A-1) having structural units derived from propylene and structural units derived from 1-butene, wherein the content of the structural units derived from propylene is 70-99 mol% based on all the structural units of Polymer (A-1), the content of the structural units derived from 1-butene is 1-30 mol% based on all the structural units of Polymer (A-1), and a melting peak is substantially not observed, or, Polymer (A-2) obtained by modification of Polymer (A-1) with an α,β-unsaturated carboxylic acid, (B): Polymer (B-1) having structural units derived from ethylene and structural units derived from propylene, wherein the content of the structural units derived from ethylene is 5-20 mol% based on all the structural units of Polymer (B-1), the content of the structural units derived from propylene is 80-95 mol% based on all the structural units of Polymer (B-1), and a melting peak is observed, or, Polymer (B-2) obtained by modification of Polymer (B-1) with an α,β-unsaturated carboxylic acid.
可提供一种组合物,该组合物对例如塑料(尤其是聚丙烯等)制成的粘合剂具有优异的粘合性。该组合物包括以下(A)和(B)。(A):具有丙烯结构单元和 1-丁烯结构单元的聚合物(A-1),其中丙烯结构单元的含量占聚合物(A-1)所有结构单元的 70-99 摩尔%,1-丁烯结构单元的含量占聚合物(A-1)所有结构单元的 1-30 摩尔%,且基本未观察到熔融峰,或者,用α,β-不饱和羧酸对聚合物(A-1)进行改性而得到的聚合物(A-2):聚合物(B-1),其结构单元来自乙烯和丙烯,其中乙烯结构单元的含量占聚合物(B-1)所有结构单元的 5-20 摩尔%,丙烯结构单元的含量占聚合物(B-1)所有结构单元的 80-95 摩尔%,并可观察到熔融峰,或用α,β-不饱和羧酸改性聚合物(B-1)得到的聚合物(B-2)。