Flame retardant thermoplastic compositions
US4401778A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 1981 |
| Grant date | Aug 30, 1983 |
| Priority date | — |
| Expiry date | Sep 17, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/3417
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A flame retardant thermoplastic polymer containing a flame retardant amount of a flame retardant additive mixture. The mixture is comprised of halogenated imide-containing polyols having the formula: ##STR1## and the corresponding ethers having the formula: ##STR2## wherein R is a hydrocarbon group having the valence n+2 and is selected from the group consisting of benzene groups, naphthalene groups and alicyclic hydrocarbon groups containing 5 to 10 carbon atoms, X is selected from the group consisting of bromine and chlorine, n is an integer from 1-6 and p is an integer from 2-6. The preferred flame retardant mixture is a derivative of tetrabromophthalic anhydride.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.