Epoxy/isocyanate crosslinked coatings containing 1,3-disubstituted imidazole-2-thione catalysts
US5084542A · kind A · utility
1Cited by
33References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 31, 1990 |
| Grant date | Jan 28, 1992 |
| Priority date | — |
| Expiry date | May 31, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/687
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.