Process for preparing polyepoxides (II)

Claim 1

A process for producing polyepoxide resins having a relatively wide molecular weight distribution per epoxide equivalent weight, which process comprises: (a) reacting a polyepoxide having more than one 1,2-epoxide group with a polyhydric phenol in a first step in the presence of an effective amount of a fusion catalyst to form an intermediate product; and (b) reacting said intermediate product with additional amounts of polyhydric phenol, polyepoxide and effective amounts of fusion catalyst in one or more additional steps where (i) the amount of polyhydric phenol used in each of the steps is about 10 to about 90 percent by weight of the total amount of polyhydric phenol used; (ii) the amount of polyepoxide used in each of the steps is about 10 to 90 percent by weight of the total amount of polyepoxide used; and (iii) the weight ratio of said polyhydric phenol to said polyepoxide employed in each step is about 0.3 to about 0.6.