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
1998-08-24
1999-10-12
Gorr, Rachel
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...
521124, C08G 1822
Patent
active
059656867
ABSTRACT:
The present invention is directed to novel metal organocomplexes as catalysts for the reaction of compounds with isocyanate and hydroxy functional groups to form urethane and/or polyurethane and the process employing such catalysts. More particularly, the present invention is directed to novel complexes of zirconium or hafnium with diketones or alkylacetoacetoates. These novel catalysts are useful for the production of urethanes and polyurethanes which are important in many industrial applications, such as: coatings, foams, adhesives, sealants, and reaction injection molding (RIM) plastics.
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R.C. Fay in the Chapter on Zirconium and Hafnium, in Geoffrey Wikinson ed., Comprehensive Coordination Chemistry, vol. 3, p. 363, Pergamon Press, (1987).
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Blank Werner
Florio John James
He Zhiqiang Alex
Picci Marie Emmanuelle
Gorr Rachel
King Industries, Inc.
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