Fire retardant, thermosetting, resinous reaction products of phosphoric acid and methyol- or alkoxymethyl-substituted epoxides
US4256844A · kind A · utility
27Cited by
8References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1979 |
| Grant date | Mar 17, 1981 |
| Priority date | — |
| Expiry date | Jun 7, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2363/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Phosphoric acid is reacted with mono- or polyfunctional epoxides containing methyol or alkoxymethyl groups, to provide resins which are curable simply by heating and contain as much as about 30 weight percent of phosphoric acid. Improved flame retardancy and water resistance are imparted to structural foams by impregnating them with these resins and curing in-situ.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.