Process for chain stopping of PVC polymerization
    1.
    发明授权
    Process for chain stopping of PVC polymerization 失效
    PVC聚合的链条停止过程

    公开(公告)号:US07683144B2

    公开(公告)日:2010-03-23

    申请号:US10513179

    申请日:2003-04-24

    IPC分类号: C08F2/38 C08F14/06

    摘要: The present invention relates to a process and composition for the chain stopping of vinyl chloride polymerization or copolymerization in the presence of a stable free nitroxyl radical and a phenolic antioxidant. A further subject of the invention is the use of a stable free nitroxyl radical together with a phenolic antioxidant as a chain stopping mixture for the vinyl chloride polymerization or copolymerization. A further aspect of the invention is the use of higher sterically hindered nitroxyl radicals alone as chain stopping agents for the vinyl chloride polymerization.

    摘要翻译: 本发明涉及用于在稳定的游离硝酰基和酚类抗氧化剂存在下氯乙烯聚合或共聚的链停止的方法和组合物。 本发明的另一个主题是使用稳定的游离硝酰基与酚类抗氧化剂作为氯乙烯聚合或共聚的链终止混合物。 本发明的另一方面是单独使用高级位阻硝酰自由基作为氯乙烯聚合的链终止剂。

    Process for chain stopping of pvc polymerization
    2.
    发明申请
    Process for chain stopping of pvc polymerization 失效
    pvc聚合的链停止过程

    公开(公告)号:US20050222347A1

    公开(公告)日:2005-10-06

    申请号:US10513179

    申请日:2003-04-24

    摘要: The present invention relates to a process and composition for the chain stopping of vinyl chloride polymerization or copolymerization in the presence of a stable free nitroxyl radical and a phenolic antioxidant. A further subject of the invention is the use of a stable free nitroxyl radical together with a phenolic antioxidant as a chain stopping mixture for the vinyl chloride polymerization or copolymerization. A further aspect of the invention is the use of higher sterically hindered nitroxyl radicals alone as chain stopping agents for the vinyl chloride polymerization.

    摘要翻译: 本发明涉及用于在稳定的游离硝酰基和酚类抗氧化剂存在下氯乙烯聚合或共聚的链停止的方法和组合物。 本发明的另一个主题是使用稳定的游离硝酰基与酚类抗氧化剂作为氯乙烯聚合或共聚的链终止混合物。 本发明的另一方面是单独使用高级位阻硝酰自由基作为氯乙烯聚合的链终止剂。