| 摘要 |
1495957 Flame-retardant polycarbonate compositions GENERAL ELECTRIC CO 16 Dec 1974 [28 Dec 1973] 54246/74 Heading C3R A flame-retardant composition comprises a polycarbonate and an alkali metal or alkaline earth metal salt of a monomeric or polymeric aromatic sulphonic acid containing an ether group. The salt is preferably present in an amount of from 0À01 to 10% by weight based on the polycarbonate. Many salts are specified, e.g. disodium tetrachlorodiphenylether disulphonate, calcium 1 - methoxynaphthalene - 4- sulphonate and polysodium poly-(2,6-dimethylphenylene oxide)polysulphonate. |
