Isocyanate-crosslinked coating having reduced yellowing
US5216078A · kind A · utility
12Cited by
4References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1992 |
| Grant date | Jun 1, 1993 |
| Priority date | — |
| Expiry date | Sep 29, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G18/8058
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A coating composition is described for producing a clear or colorless coating. The composition comprises: PA0 (a) a polymer comprising at least one functional group that is reactive with isocyanate, PA0 (b) a blocked polyisocyanate, PA0 (c) a hydrazide group, either attached to the polymer (a), to the polyisocyanate (b), or part of a compound different from (a) or (b), wherein at least one of the nitrogens of the hydrazide group is not adjacent to a carbonyl.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.