Aqueous dispersed, epoxy crosslinked maleated oil microgel polymers for protective coatings
US5733970A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 28, 1997 |
| Grant date | Mar 31, 1998 |
| Priority date | — |
| Expiry date | Jan 28, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An aqueous protective coating composition particularly useful for can coatings based on a polymeric binder comprises water dispersed diepoxide crosslinked microgel particles. The microgel polymer is produced by disposing in water a carboxyl functional, addition polymer modified, maleated glyceride oil copolymer and crosslinking aqueous disposed carboxyl copolymer with a low molecular weight diepoxide to form stable aqueous disposed microgel particles. The maleated glyceride oil can be modified by in-situ polymerizing ethylenic monomers with the maleated glyceride oil in the absence of water or in water to form either a water dispersed copolymer or an aqueous emulsion copolymer. The water disposed copolymer is subsequently heat reacted with diepoxide mixed with the copolymer to form aqueous dispersed microgel polymer particles.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.