Compositions and methods for inhibiting vinyl aromatic monomer
polymerization
    21.
    发明授权
    Compositions and methods for inhibiting vinyl aromatic monomer polymerization 失效
    用于抑制乙烯基芳族单体聚合的组合物和方法

    公开(公告)号:US5426257A

    公开(公告)日:1995-06-20

    申请号:US269308

    申请日:1994-06-03

    IPC分类号: C07B63/04 C07C7/20 C09K15/20

    CPC分类号: C09K15/20 C07B63/04 C07C7/20

    摘要: Compositions and methods for inhibiting polymerization of vinyl aromatic monomers in oxygen-free processing systems are disclosed. The compositions comprise an oxime compound and a hydroxylamine compound and, alternatively, an oxime compound, a hydroxylamine compound and a phenylenediamine compound. The methods comprise adding either of the compositions to the vinyl aromatic monomer in an amount ranging from 1 to about 10,000 parts per million parts monomer.

    摘要翻译: 公开了在无氧处理系统中抑制乙烯基芳族单体聚合的组合物和方法。 组合物包含肟化合物和羟胺化合物,或者肟化合物,羟胺化合物和苯二胺化合物。 所述方法包括将所述组合物中的任一组合物加入量为1至约10,000份/百万份单体的量的乙烯基芳族单体。

    Compositions and methods for inhibiting polymerization of ethlenically
unsaturated monomers
    22.
    发明授权
    Compositions and methods for inhibiting polymerization of ethlenically unsaturated monomers 失效
    用于抑制不饱和单体聚合的组合物和方法

    公开(公告)号:US5396005A

    公开(公告)日:1995-03-07

    申请号:US183547

    申请日:1994-01-19

    IPC分类号: C07C7/20

    CPC分类号: C07C7/20

    摘要: Disclosed are compositions and methods for inhibiting polymerization of ethylenically unsaturated monomers. The compositions comprise a methoxyphenol compound selected from the group consisting eugenol and 2-tert-butyl-4-hydroxyanisole and a phenylenediamine compound. The methods comprise adding from about 1 to about 10,000 parts per million to the ethylenically unsaturated monomer during processing.

    摘要翻译: 公开了抑制烯属不饱和单体聚合的组合物和方法。 组合物包含选自丁子香酚和2-叔丁基-4-羟基苯甲醚和苯二胺化合物的甲氧基苯酚化合物。 该方法包括在加工期间将约1至约10,000份/百万份添加至烯属不饱和单体。

    Methods and compositions for inhibiting vinyl aromatic monomer
polymerization
    26.
    发明授权
    Methods and compositions for inhibiting vinyl aromatic monomer polymerization 失效
    用于抑制乙烯基芳族单体聚合的方法和组合物

    公开(公告)号:US5562863A

    公开(公告)日:1996-10-08

    申请号:US503466

    申请日:1995-07-18

    IPC分类号: C07C7/20 C09K15/00 B01D3/34

    CPC分类号: C07C7/20 Y10S585/95

    摘要: Vinyl aromatic monomer polymerization methods utilizing a composition of 2,6-di-tert-butyl-4-methylphenol and a substituted benzoquinonediimide compound are disclosed. Preferably, the composition is employed in an amount of 1 part to 10,000 parts per million parts monomer during distillation of styrene.

    摘要翻译: 公开了使用2,6-二叔丁基-4-甲基苯酚和取代的苯醌二酰亚胺化合物的组合物的乙烯基芳族单体聚合方法。 优选地,在蒸馏苯乙烯期间,组合物的用量为1至10,000份/百万份单体。

    Methods and compositions for inhibiting the polymerization of
dichlorobutene
    27.
    发明授权
    Methods and compositions for inhibiting the polymerization of dichlorobutene 失效
    用于抑制二氯丁烯聚合的方法和组合物

    公开(公告)号:US5538622A

    公开(公告)日:1996-07-23

    申请号:US373707

    申请日:1995-01-17

    IPC分类号: C07C17/42 C07C7/20

    CPC分类号: C07C17/42

    摘要: Methods and compositions for inhibiting the polymerization of crude dichlorobutene during its processing are disclosed. The methods comprise adding an effective polymerization inhibiting amount of a composition of a hydroxylamine compound and a metal deactivator compound to the dichlorobutene. The preferred hydroxylamine compound is bis-(2-hydroxypropyl)hydroxylamine and the preferred metal deactivator compound is a Mannich reaction product.

    摘要翻译: 公开了在其加工过程中抑制粗二氯丁烯聚合的方法和组合物。 所述方法包括向二氯丁烯中加入有效聚合抑制量的羟胺化合物和金属钝化剂化合物的组合物。 优选的羟胺化合物是双 - (2-羟丙基)羟胺,优选的金属钝化剂化合物是曼尼希反​​应产物。

    Methods for inhibiting vinyl aromatic monomer polymerization
    28.
    发明授权
    Methods for inhibiting vinyl aromatic monomer polymerization 失效
    乙烯基芳族单体聚合抑制方法

    公开(公告)号:US5489720A

    公开(公告)日:1996-02-06

    申请号:US269307

    申请日:1994-06-30

    IPC分类号: C07B63/04 C07C7/20 C09K15/20

    CPC分类号: C09K15/20 C07B63/04 C07C7/20

    摘要: An improved method for inhibiting the polymerization of vinyl aromatic monomer with a hydroxylamine compound is disclosed. The improvement provides for adding a catalytic amount of a phenylenediamine compound to the vinyl aromatic system while replacing any phenylenediamine compound lost as a result of physical removal from the system via the waste stream.

    摘要翻译: 公开了一种用羟胺化合物抑制乙烯基芳族单体的聚合的改进方法。 该改进提供了在乙烯基芳族体系中加入催化量的苯二胺化合物,同时替代由于通过废物流从体系中物理除去而损失的任何苯二胺化合物。