Flameproofed organic materials
US4388431A · kind A · utility
10Cited by
17References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 13, 1980 |
| Grant date | Jun 14, 1983 |
| Priority date | — |
| Expiry date | Feb 13, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/907
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A group of diphosphonic acid tetra-esters and phosphonic or thiophosphonic acid O,O,O-triesters containing dioxaphosphorinane rings are useful as flame retardants for polymeric organic materials, particularly polyesters. The compounds, some of which are novel, are prepared by reaction of the corresponding phosphites with peroxy compounds or with sulphur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.