Flame retardant aromatic polycarbonate with good mechanical properties and melt stability
US4223100A · kind A · utility
46Cited by
11References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 18, 1979 |
| Grant date | Sep 16, 1980 |
| Priority date | — |
| Expiry date | Apr 18, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L27/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention is concerned with flame retardant polycarbonate compositions having good mechanical properties and melt stability. These properties are achieved by adding small amounts of a fibril forming polytetrafluoroethylene, and an alkali metal salt of an inorganic acid, and a small amount of aromatically bound chlorine or bromine contained in a compound other than an organic alkali metal or alkaline earth metal salt to a thermoplastic aromatic polycarbonate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.