Phosphonic acid salts as flame retardants for polyurethanes and polyisocyanurates
US4656200A · kind A · utility
9Cited by
4References
1Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 14, 1985 |
| Grant date | Apr 7, 1987 |
| Priority date | — |
| Expiry date | Jan 14, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/902
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention provides salts of methyl phosphonic acid and its mono- or di-methyl ester with certain amines. The salts are useful flame retardant additives for polyurethanes and polyisocyanurates.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.