Coating composition containing polymeric surfactant
US4558095A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 1985 |
| Grant date | Dec 10, 1985 |
| Priority date | — |
| Expiry date | Apr 1, 2005 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D135/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A coating composition comprising: PA0 (a) A graft copolymer, having surfactant properties, comprising the reaction product of (i) a vinyl copolymer comprising vinyl chloride, a vinyl carboxylate ester, and a source of hydroxyl groups, such that the hydroxyl content prior to reaction is about 0.5 to about 8% by weight of the vinyl copolymer and of which about 1 to about 75% of said hydroxyl groups have been reacted with (ii) an anhydride copolymer comprising the reaction product of an aromatic monomer and a dicarboxylic acid anhydride, such that the graft copolymer has a molecular weight of about 2,000 to about 30,000, and a vinyl copolymer/anhydride copolymer weight ratio of about 20 to about 2, of which a sufficient number of carboxyl groups have been hydrolyzed to produce surfactant properties; PA0 (b) a dispersible powder, PA0 (c) optionally, other hard resins, PA0 (d) optionally, a rubbery polymer, PA0 (e) optionally, a supplemental surfactant, all mixed in an organic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.