Anhydride derivatives
US4010041A · kind A · utility
1Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 29, 1974 |
| Grant date | Mar 1, 1977 |
| Priority date | — |
| Expiry date | Nov 29, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D167/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A novel derivative which is an ester of trimellitic anhydride or pyromellitic dianhydride, the derivative containing carboxyl and hydroxyl groups and comprising two mono-esters per derivative molecule of diols selected from alkylene glycols and dihydroxy esters of such glycols with dicarboxylic acids. These derivatives have a minimum acid value of 40 mgm KOH per gm and when blended with a suitable cross-linking agent are useful as film-forming constituents of high-solids coating compositions.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.