Process for stabilizing polyester compositions
US4301261A · kind A · utility
1Cited by
6References
13Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1980 |
| Grant date | Nov 17, 1981 |
| Priority date | — |
| Expiry date | Jun 27, 2000 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/1494
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention provides an improved process for reducing the premature gelation during esterification of epoxy compounds containing tertiary, allylic or benzylic hydrogens (e.g., saturated epoxy resins) with ethylenically unsaturated monocarboxylic acids (e.g., acrylic acid) wherein the epoxy compound in pre-reacted with a trialkylphosphite (e.g., triethylphosphite) prior to the esterification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.