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US 5,569,733 AGranted
Tertiary aminourea compositions and their use as catalysts in curable compositions
AssigneePPG Industries, Inc.
InventorsKaren D. Donnelly, Joseph M. Makhlouf
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Abstract
A composition which is the reaction product of (i) a material having the structure ##STR1## where R.sub.1 is an organic radical having 6 to 25 carbon atoms; R.sub.2 is alkylene having 1 to 4 carbon atoms; R.sub.3 and R.sub.4 are independently alkyl having 1 to 4 carbon atoms and n is 2-4 and (ii) an acidic hydrogen-containing compound. The compositions are useful as catalyst in induction curable adhesive compositions.
Claims36
A composition comprising the reaction product of:
- (i) a material having the structure:
- ##STR3## wherein R.sub.1 is an organic radical having 6 to 25 carbon atoms, R.sub.2 is alkylene having one to four carbon atoms;
- R.sub.3 and R.sub.4 are independently alkyl having one to four carbon atoms;
- and n is 2-4;
- and
- (ii) an acidic hydrogen-containing compound that provides a tertiary amino urea reaction product with a melting point to prevent melting before heating.
3 more elements
A curable composition comprising:
- (a) a polyepoxide;
- (b) a crosslinking agent;
- (c) an accelerator;
- and
- (d) a composition comprising the reaction product of:
- (i) a material having the structure:
- ##STR4## wherein R.sub.1 is an organic radical having 6 to 25 carbon atoms, R.sub.2 is alkylene having one to four carbon atoms;
- R.sub.3 and R.sub.4 are independently alkyl having one to four carbon atoms;
- and n is 2-4;
- and
- (ii) an acidic hydrogen-containing compound.
8 more elements
A process of curing a curable composition comprising:
- 1) applying a curable composition to a metal surface wherein the curable composition comprises:
- (a) a polyepoxide;
- (b) a crosslinking agent;
- (c) an accelerator;
- and
- (d) a composition comprising the reaction product of:
- (i) a material having the structure:
- ##STR5## wherein R.sub.1 is an organic radical having 6 to 25 carbon atoms, R.sub.2 is alkylene having one to four carbon atoms;
- R.sub.3 and R.sub.4 are independently alkyl having one to four carbon atoms;
- and n is 2-4;
- and
- (ii) an acidic hydrogen-containing compound;
- 2) positioning an induction coil operating at a high electrical frequency into close proximity to the coated metal surface to raise the temperature of the coated metal surface to a level sufficient to initiate cure of the composition;
- 3) maintaining the induction coil in position for a time sufficient to complete cure of the composition.
11 more elements
Dependencies are inferred from the claim text.