Advancement catalysts for epoxy resins
US4389520A · kind A · utility
18Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 5, 1982 |
| Grant date | Jun 21, 1983 |
| Priority date | — |
| Expiry date | Apr 5, 2002 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G59/066
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Advancement catalysts selected from the group consisting of formylmethylenetriphenylphosphorane and its phosphonium halide salt precursors, e.g., formylmethyltriphenylphosphonium chloride, confer high reactivity and selectivity on epoxy resin advancement reactions. Advanced epoxy resins are useful in the perparation of coatings of high quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.