Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1990-05-31
1992-01-28
Welsh, Maurice J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
C08G 1830
Patent
active
050845420
ABSTRACT:
The present invention describes the use of 1,3-disubstituted imidazole-2-thiones as catalysts for crosslinking epoxy functionalized materials with isocyanate functionalized materials. Epoxy/Isocyanate coatings containing these improved catalysts offer the following advantages: excellent pot-life with rapid cure in air at ambient temperatures, control of hardness and toughness of the cured resins, coatings which have a reduced volatile organic content, a curing process which provides clear colorless coatings, and excellent resistance to acids and bases which will improve durability.
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Organic Syntheses, vol. 64, 1986, #92-95.
Arduengo, III Anathony J.
Corcoran Patrick H.
E. I. Du Pont de Nemours and Company
Johnson Rachel
Lynn John M.
Welsh Maurice J.
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