Cationic aqueous compositions of polymer having amine groups, acid neutralized, and abis-maleimide cross-linker, coatings and process
US4037018A · kind A · utility
33Cited by
5References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 2, 1976 |
| Grant date | Jul 19, 1977 |
| Priority date | — |
| Expiry date | Jul 2, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31855
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A heat-curable coating composition contains a polymer having pendant amine groups and a bis-maleimide cross-linking agent in aqueous dispersion. The amine groups of the polymer are protonated to render the polymer water dispersible. The amine groups are adapted to become de-protonated for cross-linking with the bis-maleimide under heating to form a fully cured film. In a preferred embodiment, the coating composition serves as a cathodic electrocoating composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.