Process for preparing block copolymers with peroxy containing chain- transfer agents and products
    2.
    发明授权
    Process for preparing block copolymers with peroxy containing chain- transfer agents and products 失效
    制备具有过氧链烷基转移剂和产物的嵌段共聚物的方法

    公开(公告)号:US3800007A

    公开(公告)日:1974-03-26

    申请号:US19037671

    申请日:1971-10-18

    申请人: PENNWALT CORP

    发明人: BAFFORD R

    CPC分类号: C08F293/00 Y10S260/28

    摘要: Block copolymers are prepared by polymerizing an unsaturated monomer in the presence of a polymerization catalyst and a chain transfer agent which is a cumyl peroxide containing one or more alkyl or cycloalkyl substituents, which substituents have at least one benzylic hydrogen atom, at a temperature below that which the peroxide decomposes, and subsequently polymerizing the peroxy containing polymer so formed in the presence of additional monomer at a temperature above the decomposition point of the peroxide.

    摘要翻译: 嵌段共聚物通过在聚合催化剂和链转移剂的存在下聚合不饱和单体来制备,所述链转移剂是含有一个或多个烷基或环烷基取代基的异丙苯过氧化物,该取代基具有至少一个苄基氢原子,该取代基具有至少一个苄基氢原子, 过氧化物分解,然后在高于过氧化物分解点的温度下,在另外的单体存在下聚合如此形成的过氧化物的聚合物。