Comb pigment dispersants
US5424364A · kind A · utility
22Cited by
9References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 17, 1994 |
| Grant date | Jun 13, 1995 |
| Priority date | — |
| Expiry date | May 17, 2014 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The polymeric pigment dispersants of this invention are polyester/acrylic comb polymers which are the reaction product of 20-85% of a carboxylic functional polyester copolymer, 10-50% of an oxirane substituted acrylic copolymer, and 2 to 20% of an imide compound. These materials disperse a wide variety of pigments and are useful in solvent borne coatings where they can provide improved efficiency of pigment use, lower paint viscosity, and reduced emission of volatile organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.