Manufacturing method for polycarbonate
    1.
    发明授权
    Manufacturing method for polycarbonate 失效
    聚碳酸酯的制造方法

    公开(公告)号:US5760156A

    公开(公告)日:1998-06-02

    申请号:US764816

    申请日:1996-12-12

    IPC分类号: C08G64/20 C08G64/30 C08G18/70

    CPC分类号: C08G64/307

    摘要: A manufacturing method for polycarbonate comprising �I! a process for manufacturing diaryl carbonate from an aromatic hydroxy compound and an aromatic hydroxy compound, �II! a process for manufacturing polycarbonate by solution polymerization of the diaryl carbonate obtained in �II! and an aromatic dihydroxy compound in the presence of a catalyst comprising a nitrogen-containing basic compound, and �III! a process for separating and removing the nitrogen-containing compound from the aromatic hydroxy by-products in �II! and returning the resultant aromatic hydroxy compounds to process �I! effectively reuses aromatic hydroxy by-products (e.g., phenols) of polycarbonate manufacturing to manufacture diaryl carbonate, while suppressing the production of alkyl aromatic ethers and then uses this diaryl carbonate to manufacture polycarbonate with good productivity.

    摘要翻译: 一种聚碳酸酯的制造方法,其包含:[I]由芳香族羟基化合物和芳香族羟基化合物制造碳酸二芳基酯的方法,[II]通过在[II]中得到的碳酸二芳基酯的溶液聚合制造聚碳酸酯的方法和芳香族二羟基 在含有含氮碱性化合物的催化剂存在下的化合物,和[III]从[II]中的芳族羟基副产物中分离除去含氮化合物并将所得芳族羟基化合物返回到方法 [I]有效地重复使用制造碳酸二甲酯的聚碳酸酯的芳族羟基副产物(例如酚),同时抑制烷基芳族醚的生产,然后使用该碳酸二芳基酯以高生产率制造聚碳酸酯。

    Polycarbonate polymer from tetra arylene triphenol
    4.
    发明授权
    Polycarbonate polymer from tetra arylene triphenol 失效
    来自四亚芳基三酚的聚碳酸酯聚合物

    公开(公告)号:US4894432A

    公开(公告)日:1990-01-16

    申请号:US227773

    申请日:1988-08-03

    IPC分类号: C07C39/15 C07C43/23

    CPC分类号: C07C43/23 C07C39/15

    摘要: A triphenol type compound represented by the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 independently represent hydrogen, a halogen, a C.sub.1 -C.sub.5 alkyl group or a C.sub.1 -C.sub.5 alkoxy group.The triphenol type compound can be used, as a branching agent, for the production of a polycarbonate comprising (A) a carbonic acid component unit, (B) a divalent phenol component unit, and (C) a triphenol type compound component unit derived from the above-mentioned triphenol type compound. The triphenol type compound unit (C) is used in an amount of 0.01 to 10 mole %, based on the divalent phenol component unit (B) and the intrinsic viscosity [.eta.], determined at 25.degree. C. in methylene chloride, of the polycarbonate is 0.4 to 1.0 dl/g and the glass transition temperature (Tg), determined by a differential scanning type calorimeter is 150.degree. C. to 300.degree. C.

    Triphenol compound
    5.
    发明授权
    Triphenol compound 失效
    三酚化合物

    公开(公告)号:US4778936A

    公开(公告)日:1988-10-18

    申请号:US916099

    申请日:1986-10-07

    CPC分类号: C07C43/23 C07C39/15

    摘要: A triphenol type compound represented by the following formula: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 independently represent hydrogen, a halogen, a C.sub.1 -C.sub.5 alkyl group or a C.sub.1 -C.sub.5 alkoxy group.The triphenol type compound can be used, as a branching agent for the production of a polycarbonate comprising (A) a carbonic acid component unit, (B) a divalent phenol component unit, and (C) a tripenol type compound component unit derived from the above-mentioned triphenol type compound. The triphenol type compound unit (C) is used in an amount of 0.01 to 10 mole %, based on the divalent phenol component unit (B) and the intrinsic viscosity [.eta.], determined at 25.degree. C. in methylene chloride, of the polycarbonate is 0.4 to 1.0 dl/g and the glass transition temperature (Tg), determined by a differential scanning type calorimeter is 150.degree. C. to 300.degree. C.

    摘要翻译: 由下式表示的三酚型化合物:其中R 1,R 2,R 3,R 4,R 5和R 6独立地表示氢,卤素,C 1 -C 5烷基或C 1 -C 5烷氧基。 三酚类化合物可用作生产聚碳酸酯的支化剂,其包含(A)碳酸组分单元,(B)二元酚组分单元,和(C)衍生自 上述三酚型化合物。 基于二元酚组分单元(B)和在二氯甲烷中在25℃下测定的特性粘度η,三酚类化合物单元(C)的使用量为0.01至10摩尔% 聚碳酸酯为0.4〜1.0dl / g,由差示扫描型量热计测定的玻璃化转变温度(Tg)为150〜300℃。