Flameproofed organic materials
US4458045A · kind A · utility
5Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 18, 1983 |
| Grant date | Jul 3, 1984 |
| Priority date | — |
| Expiry date | Mar 18, 2003 |
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 0,0,0-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.