发明申请
US20070123686A1 High glass transition temperature copolycarbonates, methods of manufacture, and uses thereof
有权
高玻璃化转变温度共聚碳酸酯,其制造方法及其应用
- 专利标题: High glass transition temperature copolycarbonates, methods of manufacture, and uses thereof
- 专利标题(中): 高玻璃化转变温度共聚碳酸酯,其制造方法及其应用
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申请号: US11289063申请日: 2005-11-29
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公开(公告)号: US20070123686A1公开(公告)日: 2007-05-31
- 发明人: James Mahood , Emine Gurel
- 申请人: James Mahood , Emine Gurel
- 主分类号: C08G64/00
- IPC分类号: C08G64/00
摘要:
A copolycarbonate is discloses, comprising units of the formula (1) wherein 70 to 99.5 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (2) wherein R2 and R3 are each independently a halogen or a C1-6 alkyl group, R4 is a methyl or a phenyl group, and c is independently 0 to 4; and 0.5 to 30 mole percent of the total number of R1 groups are derived from a dihydroxy compound of formula (3) HO—R5—OH (3) wherein at least 60% of the R5 groups are aromatic, and the dihydroxy compound of formula (3) is not the same as the dihydroxy compound of formula (2), and wherein the copolycarbonate has a glass transition temperature of 250° C. or higher.
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