申请人:MITSUI TOATSU CHEMICALS, Inc.
公开号:EP0475605A2
公开(公告)日:1992-03-18
A phenolic resin is obtained by condensation reaction between a specific trifunctional aromatic compound and a phenolic compound. The resin can be reacted with a curing agent such as a hexamine to give cured articles having excellent heat resistance, electrical properties, wear resistance and chemical resistance, and the phenolic resin is also much more excellent in curing reactivity as compared with conventional techniques. The aromatic compound is represented by the formula :
(wherein each of R1, R2 and R3 is independently a hydroxyl group, a halogen atom or a lower alkoxy group having 3 or less carbon atoms, and particularly both of R2 and R3 may be replaced with one oxygen atom ; and each of X1 and X2 is independently a hydrogen atom, a halogen atom or an alkyl group).
酚醛树脂是由特定的三官能芳香族化合物和酚类化合物发生缩合反应而得到的。该树脂可与固化剂(如六胺)反应,使固化物具有优异的耐热性、电气性能、耐磨性和耐化学性,与传统技术相比,酚醛树脂的固化反应性也更为优异。芳香族化合物的代表式为
(其中 R1、R2 和 R3 各自独立地为羟基、卤素原子或具有 3 个或更少碳原子的低级烷氧基,特别是 R2 和 R3 均可被一个氧原子取代;X1 和 X2 各自独立地为氢原子、卤素原子或烷基)。