会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 23. 发明授权
    • Methods and compositions for styrene inhibition via in situ generation of quinone methides
    • 通过原位生成醌甲基化物进行苯乙烯抑制的方法和组合物
    • US08901362B2
    • 2014-12-02
    • US13364554
    • 2012-02-02
    • John Link
    • John Link
    • C07C7/20
    • C07C7/20C08F2/40C08F12/08C07C15/46
    • Methods and compositions are provided for inhibiting the polymerization of a vinyl aromatic monomer, such as styrene monomer, during elevated temperature processing or distillation thereof or during storage or shipment of polymer containing product. The compositions include a combination of a hydroxybenzyl alcohol (1) and a dehydration catalyst (2). The combination is added to a vinyl aromatic monomer. Typically, the hydroxybenzyl alcohol is dehydrated in the styrene solution by the use of a strong acid catalyst acting as the dehydration catalyst, and the resultant reaction product is a quinone methide styrene inhibitor.
    • 提供了用于在高温处理或蒸馏期间或在含聚合物的产品的储存或运输过程中抑制乙烯基芳族单体如苯乙烯单体聚合的方法和组合物。 组合物包括羟基苄醇(1)和脱水催化剂(2)的组合。 将该组合物加入到乙烯基芳族单体中。 通常,通过使用充当脱水催化剂的强酸催化剂,苯乙烯溶液中羟基苄醇脱水,得到的反应产物是醌甲基苯乙烯抑制剂。
    • 24. 发明申请
    • METHODS AND COMPOSITIONS FOR INHIBITING POLYSTYRENE FORMATION DURING STYRENE PRODUCTION
    • 在苯乙烯生产过程中抑制聚苯乙烯形成的方法和组合物
    • US20130072729A1
    • 2013-03-21
    • US13235004
    • 2011-09-16
    • John LinkMike Hong
    • John LinkMike Hong
    • C07C7/20C09K3/00
    • C07C7/20C07C7/05C07C17/42C08F12/08C08F2/40C07C15/46C07C15/44C07C25/28
    • Methods and compositions are provided for inhibiting the polymerization of a vinyl aromatic monomer, such as styrene monomer, during elevated temperature processing or distillation thereof. The compositions comprise an inhibitor combination of (A) a hydroxylamine and (B) a stable free radical plus a retarder that is either; (C) dinitrobutylphenol or (D) quinone methide. The ratio of (A) to (B) ranges from about 5% (A) to 95% (B) to about 95% (A) to about 5% (B). The compositions are added to the vinyl aromatic monomer in amounts sufficient to prevent polymerization during the distillation process. Typically the inhibitor combination is added to the vinyl aromatic monomer in an amount ranging from about 10 to 150 ppm of the monomer. Retarders are typically added in an amount ranging from 50 to 1500 ppm of the vinyl aromatic monomer.
    • 提供了用于在高温处理或蒸馏期间抑制乙烯基芳族单体如苯乙烯单体的聚合的方法和组合物。 组合物包含(A)羟胺和(B)稳定的自由基加上缓凝剂的抑制剂组合; (C)二硝基丁基苯酚或(D)醌甲基化物。 (A)至(B)的比例为约5%(A)至95%(B)至约95%(A)至约5%(B)。 将组合物以足以防止在蒸馏过程中聚合的量加入到乙烯基芳族单体中。 通常将抑制剂组合物加入到单体约10至150ppm范围内的乙烯基芳族单体中。 通常,乙烯基芳族单体的加入量通常为50〜1500ppm。