申请人:E.I. DU PONT DE NEMOURS AND COMPANY
公开号:EP0175245A2
公开(公告)日:1986-03-26
A heat resistant sulfor-modified polychloroprene copolymer of 2-chloro-1,3-butadiene and 2,3-dichloro-1,3-butadiene characterized in that said polychloroprene has a Mooney viscosity ML 1 +4' (100°C) of from about 25-75, contains from about 3-25% by weight of units derived from 2,3-dichloro-1,3-butadiene, and of the units derived from 2-chloro-1,3-butadiene, 92-96% by weight of said units have a 1,4-trans configuration, said polychloroprene copolymer being curable with 4 parts MgO and 5 parts ZnO per 100 parts of copolymer at about 160°C for 30 minutes to yield a vulcanizate having a tensile strength of at least 10 MPa.
一种由 2-氯-1,3-丁二烯和 2,3-二氯-1,3-丁二烯组成的耐热砜改性聚氯丁烯共聚物,其特征在于所述聚氯丁烯的门尼粘度 ML 1 +4'(100°C)约为 25-75,含有约 3-25%(按重量计)由 2,3-二氯-1,3-丁二烯衍生的单元,在由 2-氯-1,3-丁二烯衍生的单元中,92-96%(按重量计)的单元具有 1,4-反式构型,所述聚氯丁烯共聚物可在约 160°C 下用每 100 份共聚物中的 4 份氧化镁和 5 份氧化锌固化 30 分钟,以生成抗拉强度至少为 10 兆帕的硫化胶。