申请人:ROCKWELL INTERNATIONAL CORPORATION
公开号:EP0758662A2
公开(公告)日:1997-02-19
A curable resin system includes an epoxy resin, a co-reactant selected from N-alkyl and N-aryl substituted aziridines, and a catalyst to promote cure at ambient temperature. The system is compatible with various epoxy resins such as bisphenol A epoxy, bisphenol F epoxy, novolac epoxy, cycloaliphatic epoxy, triglycidyl-aminophenol, and triglycidyl isocyanurate. The aziridine co-reactant may be selected from reaction products of NH aziridines with acrylates and methacrylates of trimethylolpropane, ethylene glycol, propylene glycol, bisphenol A, bisphenol F, pentaerythritol, glycerol, and their alkoxylated derivatives; reaction products of NH aziridines with epoxy compounds; and 1-aziridine ethanol and its reaction products with epoxy and isocyanate functional compounds. Suitable catalysts include acid salts and complexes, strong electron accepting compounds, combinations of silicone hydrides and metal complexes, and non-halogen containing boron derivatives. As an option, compounds having active hydrogen, such as mono or multifunctional phenols, alcohols, and carboxylic acids, with or without anhydrides, may be added. The curable resin system provides controlled cure rates at ambient temperature, compatibility with SCF CO2 spray application systems, and no release of volatile organic compounds during cure.
一种可固化树脂体系包括一种环氧树脂、一种选自 N-烷基和 N-芳基取代的氮丙啶的共反应物以及一种在环境温度下促进固化的催化剂。该体系与各种环氧树脂兼容,如双酚 A 环氧树脂、双酚 F 环氧树脂、酚醛环氧树脂、环脂族环氧树脂、三缩水甘油基氨基苯酚和异氰尿酸三缩水甘油酯。氮丙啶共反应物可选自 NH 氮丙啶与三羟甲基丙烷、乙二醇、丙二醇、双酚 A、双酚 F、季戊四醇、甘油及其烷氧基化衍生物的丙烯酸酯和甲基丙烯酸酯的反应产物;NH 氮丙啶与环氧化合物的反应产物;以及 1-氮丙啶乙醇及其与环氧和异氰酸酯官能化合物的反应产物。合适的催化剂包括酸盐和络合物、强电子接受化合物、硅氢化物和金属络合物的组合以及不含卤素的硼衍生物。作为一种选择,还可以添加具有活性氢的化合物,例如单官能或多官能酚、醇和羧酸(含或不含酸酐)。固化树脂体系在环境温度下的固化速率可控,与 SCF CO2 喷涂系统兼容,且在固化过程中不会释放挥发性有机化合物。