申请人:NIPPON PAINT CO., LTD.
公开号:EP0444956A2
公开(公告)日:1991-09-04
Disclosed is a thermosetting epoxy resin composition which has excellent mechanical properties, such as heat resistance and impact resistance. The thermosetting resin composition of the present invention comprises (a) a polyisocyanate compound, (b) a polyepoxide compound, (c) a radical polymerizable compound selected from the group consisting of a vinyl aromatic monomer and a (meth)acrylate represented by
CH₂=CR1s-CO-OR₂
[wherein R₁ represents a hydrogen atom or a methyl group, R₂ represents an aliphatic group having 4 to 18 carbon atoms, an alicyclic group or an aromatic group.],
(d) a specific oxazolidone-forming catalyst, and (e) a radical polymerization initiator; the polyiocyanate compound (a) and polyepoxide compound (b) being present in a functional group equevalent ratio of isocyanate group : epoxy group within the range of 1 : 2 to 2 : 1 and the radical polymerizable compound (c) being present in an amount of about 1 to 100 parts by weight based on the total amount of the polyisocyanate compound (a) and the polyepoxide compound. The present invention also provides an cured article obtained from the thermosetting resin composition of the present invention.
本发明公开了一种热固性环氧树脂组合物,它具有优异的机械性能,如耐热性和抗冲击性。本发明的热固性树脂组合物包括:(a) 聚异氰酸酯化合物;(b) 聚环氧化合物;(c) 可自由基聚合的化合物,该化合物选自由乙烯基芳香族单体和(甲基)丙烯酸酯组成的组,其代表为
CH₂=CR1s-CO-OR₂
[其中 R₁ 代表氢原子或甲基,R₂ 代表具有 4 至 18 个碳原子的脂族基团、脂环族基团或芳香族基团]、
(d) 特定的噁唑烷酮形成催化剂,和 (e) 自由基聚合引发剂;多异氰酸酯化合物 (a) 和多环氧化物化合物 (b) 的异氰酸酯基团与环氧基团的官能团等价比在 1 : 2 至 2 : 1 的范围内,自由基可聚合化合物 (c) 的存在量以多异氰酸酯化合物 (a) 和多环氧化物化合物的总量为基准,约为 1 至 100 重量份。本发明还提供一种由本发明热固性树脂组合物制成的固化物。