| 发明名称 |
Discoloration-insusceptible polycarbonate composition |
| 摘要 |
Disclosed is a polycarbonate composition comprising (a) an aromatic dihydroxy compound/carbonic diester transesterification polycarbonate having terminal hydroxyl groups in a proportion of at least 20 mole %, based on the molar total of all terminal groups of the polycarbonate, and (b) a phenolic antioxidant in an amount satisfying the following formula (1):20x105M</=X</=20x105M+2,100(1)wherein X represents the amount of said phenolic antioxidant (ppm by weight), based on the weight of said polycarbonate, and M represents the amount of said terminal hydroxyl groups (mol/g-polycarbonate). The polycarbonate composition of the present invention has an advantage in that it is insusceptible to discoloration not only during production thereof and molding of the composition, but also when a molded article produced from the composition experiences high temperature atomosphere. The polycarbonate composition of the present invention can be advantageously used in the various fields where polycarbonates have conventionally been used.
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| 申请公布号 |
US5719254(A) |
申请公布日期 |
1998.02.17 |
| 申请号 |
US19960705950 |
申请日期 |
1996.08.30 |
| 申请人 |
ASAHI KASEI KOGYO KABUSHIKI KAISHA |
发明人 |
HACHIYA, HIROSHI;KOMIYA, KYOSUKE |
| 分类号 |
C08K5/13;C08G64/30;C08K5/00;C08K5/134;C08L69/00;(IPC1-7):C08G64/00 |
主分类号 |
C08K5/13 |
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