1,3-dialkylimidazole-2-thione catalysts and method of making sam

Details 1,3-dialkylimidazole-2-thione catalysts and method of making sam 1,3-dialkylimidazole-2-thione catalysts and method of making sam

1991-01-31

1992-11-10

Lee, Mary C.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From phenol, phenol ether, or inorganic phenolate

5483251, 5483241, 5483245, 5483235, 548417, C07G23330, C08G 5968

Patent

active

051624826

ABSTRACT:
The present invention discloses 1,3-dialkylimidazole-2-thiones catalysts for epoxy/anhydride reactions (and other reactions) and a method of making these catalysts. Epoxy/anhydride coatings containing these improved catalysts offer the following advantages: improved appearance (especially since even weeks after application the coatings still have a "wet" look); better pot-life; improved resistance to alkaline substances which will improve durability; improved solubility; and coatings which have a reduced volatile organic content (VOC).

REFERENCES:
CA114:23205g Polarographic . . . Carbimazole, Zuman et al. 1990, p. 637.
CA 87:39372u S-Alkylation . . . Conditions: Hassanaly et al., 1977, p. 39367.

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