Coating compositions containing aldimines and polyisocyanates
US6117966A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 1993 |
| Grant date | Sep 12, 2000 |
| Priority date | — |
| Expiry date | Dec 21, 2013 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/7837
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is directed to coating compositions which have long pot lives and may be rapidly cured under ambient conditions wherein the binder contains a) a polyisocyanate component containing PA1 i) 5 to 100% by weight of a monoallophanate and PA1 ii) 0 to 95% by weight of another polyisocyanate adduct, and b) an aldimine based on the reaction product of diamino dicyclohexyl methane with an aldehyde corresponding to the formula: EQU O=CHCH(R.sub.1)(R.sub.2) wherein R.sub.1 and R.sub.2 may be the same or different and represent optionally substituted hydrocarbon radicals, or R.sub.1 and R.sub.2 together with the .beta.-carbon atom form a cycloaliphatic or heterocyclic ring.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.