C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
402/267, 260/479
C07C 69/74 (2006.01) C07C 69/54 (2006.01)
Patent
CA 1085418
ABSTRACT This invention concerns a process comprising reaction of a vicinal epoxide with a phenolic compound, a carboxylic acid, or a carboxylic acid anhydride in presence of a catalyst corresponding to the formula Image wherein each R is a C1-20 aliphatic hydrocarbyl rad- ical, R' is hydrogen or a C1-20 hydrocarbyl radical, R" represents hydrogen, C1-20 alkyl, or C1-20 alkoxy- carbonyl, and n is 0 to 20. The invention also concerns a composition comprising an epoxy resin containing an average of ore than one vicinal epoxy group par molecule and a catalyst as defined above. These catalysts are effective for selectively promoting the desired reac- tions to give high yield of products generally having excellent color. They are especially useful when pro- duction of high molecular weight products is desired. The catalysts are substantially unreactive with epoxy resins at ambient temperatures and axe thus useful for preparation of precatalzed epoxy resin compositions.
245313
Cornell Martin C.
Doorakian George A.
Schmidt Dennis L.
Smart & Biggar
The Dow Chemical Company
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