Flame resistant compositions and method of using same
US4894187A · kind A · utility
6Cited by
9References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 8, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Feb 8, 2008 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3417
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The invention relates to the preparation of halogenated imides derived from hydrazine and halogenated dicarboxylic acid anhydride and which can be used as flameproofing agents for plastics. The condensation of hydrazine and halogenated dicarboxylic acid anhydride is carried out in an aqueous medium, at a temperature ranging from 40.degree. to 225.degree. C., with a molar ratio of anhydride/hydrazine substantially equal to 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.