Powder coatings employing silyl carbamates
AssigneeOSi Specialties, Inc.
InventorsLawrence E. Katz, Hebert E. Petty, Shiu-Chin Huang Su, Bruce A. Waldman
Life of this patent
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Abstract
Powder coating formulations which include as a component thereof a silyl carbamate of the formula: where R1 is a hydrocarbon or acyl group; R2 is a monovalent hydrocarbon group; R3 is alkylene, optionally interrupted with one or more ether oxygen atoms; a is 0 or 1; X is an m-valent organic group; m is 1-6; and, either A=NH and B=O, or A=O and B=NH. The silanes are useful as crosslinkers and/or adhesion promoters.
Claims27
A powder coating formulation which includes as a component thereof a silyl carbamate of the formula:
- where R1 is a hydrocarbon or acyl group;
- R2 is a monovalent hydrocarbon group;
- R3 is alkylene, optionally interrupted with one or more ether oxygen atoms;
- a is 0 or 1;
- X is an m-valent organic group;
- m is 2-4;
- and, either A=NH and B=O, or A=O and B=NH.
A powder coating formulation as in claim wherein R1 is methyl or ethyl;
- and X is a saturated linear, branched or cyclic aliphatic hydrocarbon group.
In a method for bonding a first substance to a second substance by means of an adhesive, the improvement comprising employing as said adhesive an adhesive formulation which includes as a component thereof a silyl carbamate of the formula:
- where R1 is a hydrocarbon or acyl group;
- R2 is a monovalent hydrocarbon group;
- R3 is alkylene, optionally interrupted with one or more ether oxygen atoms;
- a is 0 or 1;
- X is an m-valent organic group;
- m is 2-4;
- and, either A=NH and B=O, or A=O and B=NH.
Dependencies are inferred from the claim text.