Fire retardant polymer resin
US4309527A · kind A · utility
10Cited by
13References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 9, 1981 |
| Grant date | Jan 5, 1982 |
| Priority date | — |
| Expiry date | Feb 9, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2361/06
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Flame retardant polymer resins formed by an acid condensation reaction from a mixture of resorcinol and furfural with a molar excess of the aldehyde. In one particular embodiment the resin is formed of a mixture of two prepolymer solutions with at least a boric acid catalyst, one or both of the prepolymer solutions being an acid-condensation reaction product of resorcinol and furfural with excess aldehyde functionality, or one of the prepolymers being a mix of substantially unreacted resorcinol and furfural with a slight molar excess of aldehyde.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.