An acid anhydride-containing one package epoxy resin composition consisting indispensably of (1) an epoxy resin having two or more epoxy groups in one molecule, (2) an acid anhydride, (3) at least one of (a) a liquid latent curing accelerator, (b) a latent curing accelerator soluble in an epoxy resin having two or more epoxy groups in one molecule and (c) a latent curing accelerator soluble in an acid anhydride and (4) a dispersible latent curing accelerator, in which the ratio of (1) to (2) is from 0.8 to 1.2 as (the number of acid anhydride equivalent)/(the number of epoxy equivalent) and the amounts of (3) and (4) each are from 0.1 to 10 parts by weight to 100 parts by weight of the epoxy resin.
The composition has excellent infiltrability, storage stability and reactivity.
一种含酸酐的一包环氧
树脂组合物,其组成不可或缺地包括:(1) 分子中含有两个或两个以上环氧基团的环氧
树脂;(2) 酸酐;(3) (a) 液体潜伏固化
促进剂中的至少一种、(c) 可溶于酸酐的潜在固化
促进剂和 (4) 可分散的潜在固化
促进剂中的至少一种,其中 (1) 与 (2) 的比例为 0.8至1.2,即(酸酐当量数)/(环氧当量数),(3)和(4)的用量各为 0.1 至 10 重量份对 100 重量份环氧
树脂。
该组合物具有优异的浸润性、储存稳定性和反应活性。