Preparation of resin composition from cyclic polycarbonate oligomers
from spirobiindane bisphenol
    6.
    发明授权
    Preparation of resin composition from cyclic polycarbonate oligomers from spirobiindane bisphenol 失效
    由螺二茚双酚的环状聚碳酸酯低聚物制备树脂组合物

    公开(公告)号:US4775741A

    公开(公告)日:1988-10-04

    申请号:US59297

    申请日:1987-06-08

    IPC分类号: C08G64/06 C08G65/40 C08G63/62

    CPC分类号: C08G64/06 C08G65/4081

    摘要: Cyclic polycarbonate mixtures containing units derived from spirobiindane bisphenols, preferably 6,6'-dihydroxy-3,3,3',3'-tetramethylspirobiindane are prepared from the corresponding bischloroformates or mixtures thereof with bisphenols. They may be homopolymeric or copolymeric; cyclic oligomer mixtures are preferred. Such oligomers may be converted to linear polycarbonates having high glass transition temperatures.

    摘要翻译: 含有衍生自螺二茚满双酚的单元的环状聚碳酸酯混合物,优选为6,6'-二羟基-3,3,3',3'-四甲基螺茚二茚,由相应的双氯甲酸酯或其与双酚的混合物制备。 它们可以是均聚或共聚的; 环状低聚物混合物是优选的。 这样的低聚物可以转化为具有高玻璃化转变温度的直链聚碳酸酯。

    Cyclic monocarbonate bishaloformates
    8.
    发明授权
    Cyclic monocarbonate bishaloformates 失效
    环状单碳酸酯双卤甲酸酯

    公开(公告)号:US4921975A

    公开(公告)日:1990-05-01

    申请号:US356156

    申请日:1989-05-24

    IPC分类号: C08G64/14 C08G64/26

    CPC分类号: C08G64/26 C08G64/14

    摘要: Cyclic monocarbonate bischloroformates are prepared by the reaction of a carbonyl halide such as phosgene with a bridged substituted resorcinol or hydroquinone such as bis(2,4-dihydroxy-3-methylphenyl)methane or bis(2,5-dihydroxy-3,4,6-trimethylphenyl)methane in the presence of aqueous alkali metal hydroxide. The cyclic monocarbonate bischloroformates may be used for the preparation of linear or cyclic polycarbonates containing cyclic carbonate structural units, which may in turn be converted to crosslinked polycarbonates.

    摘要翻译: 通过羰基卤化物如光气与桥连取代的间苯二酚或氢醌例如双(2,4-二羟基-3-甲基苯基)甲烷或双(2,5-二羟基-3,4-二甲基苯基)甲烷的反应制备环状单碳酸酯双氯甲酸酯, 6-三甲基苯基)甲烷在碱金属氢氧化物水溶液存在下进行。 环状单碳酸酯双氯甲酸酯可用于制备含有环状碳酸酯结构单元的线性或环状聚碳酸酯,其可以转化为交联的聚碳酸酯。

    Crosslinkable polycyclic polycarbonate oligomer and methods for their
preparation and use
    9.
    发明授权
    Crosslinkable polycyclic polycarbonate oligomer and methods for their preparation and use 失效
    可交联的多环聚碳酸酯低聚物及其制备和使用方法

    公开(公告)号:US4888411A

    公开(公告)日:1989-12-19

    申请号:US208515

    申请日:1988-06-20

    摘要: Polycyclic polycarbonate (or thiol analog) oligomers are prepared from a mixture of at least one bishaloformate with at least one tetraphenol, or thio analogs thereof. Such mixture may also contain at least one dihydroxy or dimercapto compound. The oligomers are formed by the reaction of such mixtures with alkali metal hydroxides and various amines. The polycyclic oligomer mixtures may be converted to crosslinked polycarbonates or their thiol analogs.

    摘要翻译: 多环状聚碳酸酯(或硫醇类似物)低聚物由至少一种双卤代甲酸酯与至少一种四酚或其硫代类似物的混合物制备。 这种混合物还可含有至少一种二羟基或二巯基化合物。 低聚物通过这些混合物与碱金属氢氧化物和各种胺的反应而形成。 多环低聚物混合物可以转化为交联聚碳酸酯或其硫醇类似物。