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
    • 83. 发明授权
    • Catalysts for the oxirane-anhydride reaction
    • 用于环氧乙烷 - 酐反应的催化剂
    • US3977996A
    • 1976-08-31
    • US475549
    • 1974-06-03
    • Arthur Katzakian, Jr.Herman H. WeylandRoger B. SteeleMarvin H. Gold
    • Arthur Katzakian, Jr.Herman H. WeylandRoger B. SteeleMarvin H. Gold
    • C08G59/68C08F4/22
    • C08G59/685
    • This patent describes a method of catalyzing the reaction of organic polybasic acid anhydrides with at least one oxirane which comprises carrying out the reaction in the presence of an effective catalytic amount of a synergistic catalyst mixture comprising an active chromium III tricarboxylate salt having unoccupied coordination sites and any compound capable of polarizing the carboxylic acid anhydride to yield a reactive carboxylic acid moiety. Preferred compounds as the cocatalyst member include one or more members selected from the group consisting of the alkyl, aryl, aralkyl, and alkaryl tri-substituted compounds of the following types: quaternary ammonium hydroxides; quarternary phosphonium halides; arsines; amine oxides; sulfoxides; tertiary aminophenols; trihydrocarbon phosphine oxides; trihydrocarbon phosphines; tertiary amines, and combinations thereof, each alone or in combination with a phenol or other reactive promoter such as, carboxylic acids and alcohols; and compounds containing two or more co-catalytic functional groups in the same molecule such as alkyl phosphoramides, alone or in combination with any and all of (1) any of the members, (2) phenols or other reactive promoters. Also the invention pertains to a novel class of mixed catalysts which act synergistically for promoting the reaction of oxirane oxygen groups with curing (crosslinking) or chain extension agents.
    • 该专利描述了一种催化有机多元酸酐与至少一个环氧乙烷的反应的方法,其包括在有效催化量的协同催化剂混合物存在下进行反应,所述协同催化剂混合物包含具有未占据的配位点的活性三氯化铬III盐, 任何能够使羧酸酐偏振以产生反应性羧酸部分的化合物。 作为助催化剂成分的优选化合物包括选自下列类型的烷基,芳基,芳烷基和烷芳基三取代化合物的一种或多种:季铵氢氧化物; 季铵卤化物; ines 氧化胺; 亚砜 叔氨基酚; 三烃基氧化膦; 三烃基膦; 叔胺及其组合,各自单独或与酚或其它反应性促进剂如羧酸和醇组合; 以及在同一分子中含有两个或更多个辅催化官能团的化合物,例如烷基磷酰胺,单独或与(1)任何成员,(2)酚或其它反应性促进剂中的任何和全部组合。 本发明还涉及一种新型的混合催化剂,其协同作用用于促进环氧乙烷氧基与固化(交联)或扩链剂的反应。