Process for the bromination of polystyrenes
US4352909A · kind A · utility
44Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 20, 1980 |
| Grant date | Oct 5, 1982 |
| Priority date | — |
| Expiry date | Aug 20, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S315/07
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
There is disclosed a process for producing a tri-halogenated polystyrene flame retardant for synthetic resins, whereby high molecular weight polystyrene is reacted with bromine chloride in a chlorinated hydrocarbon solvent, under substantially anhydrous conditions, in the presence of a catalytic amount of a Lewis acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.