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US 7,485,729 B2Granted
Organometallic compositions and coating compositions
AssigneeKing Industries, Inc.
InventorsBing Hsieh, Ramanathan Ravichandran, Farouk Abi-Karam
Life of this patent
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Abstract
The present invention is directed to novel organometallic complexes as catalysts for the reaction of compounds with isocyanate and hydroxyl 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 zinc(II) with substituted amidines. These novel catalysts are useful for the production of urethanes and polyurethanes which are important in many industrial applications.
Claims6
An anhydrous compound of formula VI
- Zn(X)2(Y)2 (VI)
- wherein:
- Zn may be substituted with a metal from the group consisting of aluminum, bismuth and zirconium;
- Y is an aliphatic carboxylate with an equivalent weight of about 45 to about 465;
- and
- X is an amidine of formula VII or VIII:
- wherein R14 is hydrogen or C1-C6 alkyl;
- R15 is C1-C6 alkyl or an amine optionally substituted with C1-C6 alkyl or phenyl;
- R16 and R17 are hydrogen, C1-C6 alkyl or phenyl;
- and
- R18, R19, R20 and R21 are independently hydrogen or C1-C6 alkyl.
8 more elements
Dependencies are inferred from the claim text.