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U.S. Department of Energy
Office of Scientific and Technical Information

Epoxy fusion catalyst and process

Patent ·
OSTI ID:5869486
A process is described for preparing an advanced epoxy resin from a reaction mixture containing at least about 0.01 weight percent water, the process comprising: contacting in the reaction mixture a polyepoxide having an average of more than 1 vicinal epoxide group per molecule and a weight per epoxide less than about 500 with a fusion compound selected from the group consisting of phenols, thiophenols, carboxylic acids and carboxylic acid anhydrides in the presence of a catalytic amount of a catalyst of the formula in which each R is selected independently from the group consisting of substituted or unsubstituted tert-butyl and cyclohexyl; R' is substituted or unsubstituted C/sub 1/-C/sub 8/ alkyl; and X is a compatible anion, at a temperature in the range of about 100/sup 0/C to about 200/sup 0/C for a time sufficient to produce and advanced epoxy resin having a weight per epoxide of at least about 500.
Assignee:
Shell Oil Co., Houston, TX
Patent Number(s):
US 4829141
OSTI ID:
5869486
Country of Publication:
United States
Language:
English