Polyurethane coating compositions
US4983662A · kind A · utility
54Cited by
10References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1989 |
| Grant date | Jan 8, 1991 |
| Priority date | — |
| Expiry date | Mar 2, 2009 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D175/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Aqueous selfcrosslinkable coating composition comprising an aqueous dispersion of at least one polyurethane and having hydrazine (or hydrazone) functional groups and carbonyl functional groups disposed therein to provide a selfcrosslinking reaction, in which the polyurethane polymer takes part, via azomethine formation during and/or after film formation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.