Thermally stable copolycarbonate phosphite |
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| 申请号 | US3578634D | 申请日 | 1969-08-19 | 公开(公告)号 | US3578634A | 公开(公告)日 | 1971-05-11 |
| 申请人 | GEN ELECTRIC; | 发明人 | BIALOUS CHARLES A; JAQUISS DONALD B G; KEANE JOHN J; | ||||
| 摘要 | A THERMALLY OXIDATIVELY STABLE COPOLYCARBONATE PHOSPHITE HAVING AN ELEMENTAL PHOSPHORUS CONTENT OF 0.0005 TO ABOUT 1.0 WEIGHT PERCENT BASED ON THE TOTAL WEIGHT OF THE POLYMER AND TO AN IMPROVED PROCESS FOR PREPARING THE POLYMER WHICH CONSISTS OF ADDING TO THE REACTION OF A DIHYDRIC PHENOL AND A CARBONATE PRECURSOR A PARTICULAR AMOUNT OF PHOSPHORUS TRIHALIDE SUCH AS PHOSPHORUS TRICHLORIDE. | ||||||
| 权利要求 | |||||||
| 说明书全文 | |||||||
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