发明名称 |
Cyclic polyphenylene ether-polycarbonate oligomers |
摘要 |
Cyclic polyphenylene ether-polycarbonate oligomer compositions are prepared from bishaloformates and bisphenols, at least one of which includes a spirobiindane moiety and the other of which is derived from a bisphenol-terminated polyphenylene ether oligomer. The cyclic compositions may be converted to linear copolycarbonates by treatment with a polycarbonate formation catalyst.
|
申请公布号 |
US4880899(A) |
申请公布日期 |
1989.11.14 |
申请号 |
US19880164935 |
申请日期 |
1988.03.07 |
申请人 |
GENERAL ELECTRIC COMPANY |
发明人 |
GUGGENHEIM, THOMAS L.;GUILES, JOSEPH W. |
分类号 |
C08G64/06;C08G64/18;C08G65/40 |
主分类号 |
C08G64/06 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|