Flame-resistant polymer compositions
US4172858A · kind A · utility
50Cited by
11References
29Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 4, 1977 |
| Grant date | Oct 30, 1979 |
| Priority date | — |
| Expiry date | Mar 4, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/0066
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Flameproofing of aromatic polymers is achieved by adding a synergistic combination of (a) a phosphorus compound and (b) a compound of formula R(CH.sub.2 X).sub.n, wherein R is an aromatic or heterocyclic residue, X is a leaving group and n is at least 2. Preferred phosphorus compounds are esters of phosphoric acid. The flameproofed polymers may contain aromatic groups in the main chain or as side-groups, for instance styrene polymers and copolymers, aromatic polyesters, polycarbonates and polyphenylene oxides.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.