Epoxy-acrylic graft copolymers with phosphonium cocatalysts carbon-graft
US5116888A · kind A · utility
23Cited by
3References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 4, 1990 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Oct 4, 2010 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F283/10
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for non-aqueous copolymerization of ethylenically unsaturated monomers including carboxyl functional monomers in the presence of epoxy resin by in-situ copolymerization is improved by utilizing a catalyst (initiator) combination of less than 2% peroxide and between 0.05% and 0.1% phosphonium catalyst. The carboxyl functional polymer can be aminated and dispersed into water to produce a protective coating composition useful for interior surfaces of beer and beverage cans.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.