Method for producing phosphonium phenolates
    1.
    发明授权
    Method for producing phosphonium phenolates 有权
    苯酚酚盐生产方法

    公开(公告)号:US06476273B2

    公开(公告)日:2002-11-05

    申请号:US09446475

    申请日:1999-12-21

    IPC分类号: C07F954

    CPC分类号: C07F9/54 C07C37/00 C07C39/04

    摘要: A process for preparing phosphonium phenolate is disclosed. The process entails a reaction of phosphonium halide with phenol in an aqueous alkaline solution at a temperature of 0 to 55° C. The molar ratio of phenol to phosphonium halide is between 2:1 to 10:1 and the pH of the solution is 9.5 to 11. An optional embodiment entails carrying out the reaction in the further presence of alcohol.

    摘要翻译: 公开了一种制备酚酞的方法。 该方法需要在0至55℃的温度下在碱性水溶液中将卤化鏻与酚反应。苯酚与卤化鏻的摩尔比为2:1至10:1,溶液的pH为9.5 任选的实施方案需要在醇的进一步存在下进行反应。

    Method for producing branched polycarbonates
    3.
    发明授权
    Method for producing branched polycarbonates 失效
    支链聚碳酸酯的制备方法

    公开(公告)号:US06307006B1

    公开(公告)日:2001-10-23

    申请号:US09445849

    申请日:1999-12-14

    IPC分类号: C08G6400

    CPC分类号: C08G64/1616 C08G64/30

    摘要: A process of producing branched polycarbonates by melt transesterification from at least one diphenol, diaryl carbonate and a branching agent, and in the optional presence of a catalyst is disclosed. The process which is carried out at temperatures between 80 to 400° C. and at pressures between 1 and 0.01 mbar, entails using as branching agent at least one member selected from the group consisting of (i) a specifically structured aliphatic alcohol and (ii) the ether of (i) which is formed by self-condensation.

    摘要翻译: 公开了通过熔融酯交换从至少一种二酚,碳酸二芳酯和支化剂生产支化聚碳酸酯的方法,以及任选的催化剂存在下的方法。 在80至400℃的温度和1至0.01毫巴的压力下进行的方法需要使用至少一种选自(i)特定结构的脂族醇和(ii) )通过自缩合形成的(i)的醚。

    Method for producing polycarbonate
    4.
    发明授权
    Method for producing polycarbonate 失效
    聚碳酸酯的制造方法

    公开(公告)号:US06262219B1

    公开(公告)日:2001-07-17

    申请号:US09446852

    申请日:1999-12-28

    IPC分类号: C08G6430

    CPC分类号: C08G64/307

    摘要: The present invention relates to a transesterification method for producing solvent-free polycarbonate, using N-alkyl-substituted piperidines or N-alkyl-substituted morpholines comprising C2-C12 N-alkyl substituents, preferably C2-C8 N-alkyl substituents, most preferably C2-C5 N-alkyl substituents, as catalysts.

    摘要翻译: 本发明涉及使用N-烷基取代的哌啶或包含C 2 -C 12 N-烷基取代基的N-烷基取代的吗啉,优选C 2 -C 8 N-烷基取代基,最优选C 2 -C 5 N-烷基取代基,作为催化剂。

    Polycarbonate and molded polycarbonate articles
    5.
    发明授权
    Polycarbonate and molded polycarbonate articles 失效
    聚碳酸酯和聚碳酸酯制品

    公开(公告)号:US06740730B1

    公开(公告)日:2004-05-25

    申请号:US10031502

    申请日:2002-01-15

    IPC分类号: C08G6400

    CPC分类号: C08G64/307 C08G64/14

    摘要: The invention relates to a novel polycarbonate and its use a material in the production of molded articles and semifinished products, especially for transparent articles such as data memories or radio compact discs, slabs, cellular sheets, films, housings, panes, especially panes for motor vehicles, diffusion glasses, but also for electrical applications or the constructions of houses.

    摘要翻译: 本发明涉及一种新型聚碳酸酯及其在制造模制品和半成品中的材料,特别是用于透明制品如数据存储器或无线电光盘,板,蜂窝片,薄膜,壳体,窗格,尤其是用于电动机的窗格 车辆,扩散眼镜,还可用于电气应用或房屋建筑。

    Method for producing modified polycarbonates
    6.
    发明授权
    Method for producing modified polycarbonates 有权
    改性聚碳酸酯的制备方法

    公开(公告)号:US06596840B1

    公开(公告)日:2003-07-22

    申请号:US10031630

    申请日:2002-01-15

    IPC分类号: C08G6400

    CPC分类号: C08G64/14 C08G64/307

    摘要: A process for the synthesis of polycarbonate is disclosed. The process entails reacting in the presence of at least one phosphonium salt as catalyst, at least one diphenol, at least one carbonic acid diester, and at least one alkyl group-substituted phenol chain terminator. The chain terminator is introduced in free form or as a transesterifiable compound under the conditions of the synthesis. The polycarbonate thus produced is suitable for preparing a variety of molded articles.

    摘要翻译: 公开了一种合成聚碳酸酯的方法。 该方法需要在至少一种鏻盐作为催化剂,至少一种二酚,至少一种碳酸二酯和至少一个烷基取代的苯酚链终止剂存在下反应。 该链终止剂在合成条件下以游离形式或作为可酯交换化合物引入。 由此生产的聚碳酸酯适于制备各种模塑制品。

    Process for producing oligocarbonates
    7.
    发明授权
    Process for producing oligocarbonates 有权
    生产寡聚碳酸酯的方法

    公开(公告)号:US06835797B2

    公开(公告)日:2004-12-28

    申请号:US10103921

    申请日:2002-03-22

    IPC分类号: C08G6400

    CPC分类号: C08G64/307

    摘要: A continuous process for producing oligocarbonate is disclosed. The process entails in sequence the steps of a) reacting a dihydroxyaryl compound with a diaryl carbonate in the presence of a catalyst to obtain a melt and avoiding removal of released monohydroxyaryl compound and b) withdrawing the monohydroxyaryl compound by flash evaporation and c) heating the melt obtained under vacuum in an evaporator equipped with sump receiver and d) repeating at least once steps b) and then c) each at gradually increased temperatures and lowered pressures.

    摘要翻译: 公开了连续生产低聚碳酸酯的方法。 该方法按照以下步骤进行:a)在催化剂存在下使二羟基芳基化合物与碳酸二芳基酯反应,得到熔体,避免去除脱离的单羟基芳基化合物,和b)通过闪蒸蒸发除去单羟基芳基化合物,和c)加热 在装有贮槽接收器的蒸发器中在真空下获得熔体,d)重复至少一次步骤b),然后c)逐渐升高温度和降低的压力。