| 摘要 |
To form a mixture of anhydrides suitable for use as a curing agent for epoxy resins, a mixture formed from maleic anhydride and a liquid monoolefin is heated to produce a reaction mass containing a liquid phase comprised of alkenyl succinic anhydride, maleic anhydride, and monoolefin. Then a conjugated diene hydrocarbon is mixed with this reaction mass and the temperature of the resultant mixture is such as to form a reaction mass comprising tetrahydrophthalic anhydride and/or alkyl-substituted tetrahydrophthalic anhydride and alkenyl succinic anhydride.
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