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    Method of producing polycarbonates
    1.
    发明授权
    Method of producing polycarbonates 失效
    生产聚碳酸酯的方法

    公开(公告)号：US06835798B1

    公开(公告)日：2004-12-28

    申请号：US10111925

    申请日：2002-08-05

    申请人： Michael Bödiger ,  Steffen Kühling ,  Franky Bruynseels ,  Dirk van Meirvenne ,  René de Cleyn

    发明人： Michael Bödiger ,  Steffen Kühling ,  Franky Bruynseels ,  Dirk van Meirvenne ,  René de Cleyn

    IPC分类号： C08G6400

    CPC分类号： C08G64/24 ,  G11B7/2534

    摘要： A process for the preparation of polycarbonate by the phase boundary process is disclosed. The process entails reacting at least one dihydroxydiarylalkane in the form of its alkali metal salts with phosgene in the heterogeneous phase in the presence of sodium hydroxide solution and an organic solvent. The process is characterized in that the feedstock have but low content of Fe, Cr, Ni, Zn, Ca, Mg, Al metals or homologues thereof, and in that the organic solvent is separated off, and in that the polycarbonate which is obtained is worked up. The resulting polycarbonate is particularly useful in producing transparent shaped articles.

    摘要翻译： 公开了通过相边界法制备聚碳酸酯的方法。 该方法需要在氢氧化钠溶液和有机溶剂的存在下使至少一种其碱金属盐形式的二羟基二芳基烷烃与光气在非均相中反应。 该方法的特征在于，原料具有Fe，Cr，Ni，Zn，Ca，Mg，Al金属或其同系物的含量低，并且分离出有机溶剂，并且得到的聚碳酸酯是 工作了。 所得聚碳酸酯特别可用于制造透明成型制品。

    Process for producing polycarbonates
    2.
    发明授权
    Process for producing polycarbonates 有权
    生产聚碳酸酯的方法

    公开(公告)号：US06790928B2

    公开(公告)日：2004-09-14

    申请号：US10380667

    申请日：2003-03-18

    申请人： Shu Yoshida ,  Hiroaki Tanaka

    发明人： Shu Yoshida ,  Hiroaki Tanaka

    IPC分类号： C08G6400

    CPC分类号： C08G64/307 ,  C08G64/30 ,  C08G64/305

    摘要： 100 parts by weight of the polycarbonate produce by melt polycondensation of a carbonic acid diester and a dihydroxy compound and 0.0001 to 0.1 part by weight of a phosphite compound represented by following Formula (I) are formulated: wherein Rs are each one of a hydrogen atom, an alkyl group, an aryl group, and an oxyalkyl group, where the two Rs are not concurrently hydrogen atoms. The process of the invention can yield polycarbonate molding materials that have satisfactory hue and can be used in a wide variety of applications such for optical materials.

    摘要翻译： 配制100重量份通过碳酸二酯和二羟基化合物的熔融缩聚产生的聚碳酸酯和0.0001至0.1重量份的由下式（I）表示的亚磷酸酯化合物：其中R 5分别为氢原子 ，烷基，芳基和氧烷基，其中两个R不同时为氢原子。 本发明的方法可以产生具有令人满意的色调的聚碳酸酯模制材料，并可用于光学材料等各种应用中。

    Process for producing an aromatic polycarbonate
    3.
    发明授权
    Process for producing an aromatic polycarbonate 失效
    芳香族聚碳酸酯的制造方法

    公开(公告)号：US06750314B2

    公开(公告)日：2004-06-15

    申请号：US10396408

    申请日：2003-03-26

    申请人： Masaaki Miyamoto ,  Kiyoji Kuma ,  Narutoshi Hyoudou ,  Eiji Fujimoto

    发明人： Masaaki Miyamoto ,  Kiyoji Kuma ,  Narutoshi Hyoudou ,  Eiji Fujimoto

    IPC分类号： C08G6400

    CPC分类号： C07C37/20 ,  C08G64/20 ,  C08G64/24 ,  C08G64/307 ,  C07C39/16

    摘要： To produce an aromatic polycarbonate excellent in physical properties and hue by a simplified step as compared with a conventional one. A process for producing an aromatic polycarbonate, which comprises the following steps (1) to (3): (1) a step of reacting phenol with acetone in the presence of an acid catalyst to convert part of the phenol into bisphenol A, to obtain a bisphenol A/phenol composition, (2) a step of supplying the bisphenol A/phenol composition held in a molten state in a liquid form to an aromatic polycarbonate production step, and (3) a step of reacting the bisphenol A and a carbonate material to produce an aromatic polycarbonate.

    摘要翻译： 一种芳族聚碳酸酯的制造方法，其特征在于，包括以下的工序（1）〜（3）：（1）使反应的工序 苯酚与丙酮在酸催化剂存在下反应，将一部分苯酚转化为双酚A，得到双酚A /苯酚组合物，（2）将保持在熔融状态的双酚A /苯酚组合物供给液体的步骤 形成芳族聚碳酸酯制备步骤，和（3）使双酚A和碳酸酯材料反应以制备芳族聚碳酸酯的步骤。

    Process for producing polycarbonate
    4.
    发明授权
    Process for producing polycarbonate 失效
    生产聚碳酸酯的方法

    公开(公告)号：US06740729B1

    公开(公告)日：2004-05-25

    申请号：US09674725

    申请日：1998-06-06

    申请人： Shuji Tanaka ,  Shinichi Yoshida ,  Tamiko Nishihira

    发明人： Shuji Tanaka ,  Shinichi Yoshida ,  Tamiko Nishihira

    IPC分类号： C08G6400

    CPC分类号： C08G64/307 ,  C07C68/00 ,  C07C69/96

    摘要： A process for preparing polycarbonate is composed of the steps of transesterifying a dialkyl oxalate and a phenolic compound to give a diaryl oxalate; decarbonylating the diaryl oxalate to give a diaryl carbonate; reacting the diaryl carbonate with a polyvalent hydroxyl compound in the presence of a catalyst containing an amine compound or an ammonium compound to give the polycarbonate, removing a phenolic by-product/amine by-product mixture; collecting the mixture; purifying the mixture so that the amount of the amine by-product in the mixture is reduced to give a phenolic by-product mixture not containing the amine by-product in an amount of more than 600 ppm; and, utilizing thus purified phenolic mixture as a whole or a part of the phenolic compound in the first step.

    摘要翻译： 制备聚碳酸酯的方法由将草酸二烷基酯和酚类化合物酯交换得到草酸二芳基酯的步骤组成; 使草酸二芳基酯脱碳，得到碳酸二芳基酯; 在含有胺化合物或铵化合物的催化剂存在下使碳酸二芳酯与多价羟基化合物反应，得到聚碳酸酯，除去酚类副产物/胺副产物混合物; 收集混合物; 纯化混合物，使得混合物中的副产物的量减少，得到不含胺副产物的酚类副产物混合物的量大于600ppm; 并且在第一步中利用这样纯化的酚类混合物作为整体或一部分酚类化合物。

    Optical disk substrate and molding material therefor
    5.
    发明授权
    Optical disk substrate and molding material therefor 有权
    光盘基板及其成型材料

    公开(公告)号：US06723824B1

    公开(公告)日：2004-04-20

    申请号：US10168829

    申请日：2002-06-25

    申请人： Makoto Ishida ,  Tsukasa Saito

    发明人： Makoto Ishida ,  Tsukasa Saito

    IPC分类号： C08G6400

    CPC分类号： G11B7/2534 ,  G11B7/24 ,  G11B7/2585

    摘要： An optical disk substrate formed of an aromatic polycarbonate resin obtained by a reaction between an aromatic dihydroxy compound and a carbonate diester and in which the content of undissolved substances that emit light by irradiation with light having a wavelength of 380 nm and have a size of 30 &mgr;m or greater is 100 pieces or less per kg of said resin, and a molding material therefor. According to the present invention, there can be provided an optical disk substrate in which the number of white spots that occur in the passage of a long period of time is very small and the reliability of writing and reading of information is highly stable.

    摘要翻译： 一种由通过芳族二羟基化合物和碳酸二酯之间的反应获得的芳族聚碳酸酯树脂形成的光盘基片，其中通过用380nm波长的光照射具有30nm的尺寸而发光的未溶解物质的含量 以上所述的树脂为100片以下，以及其成型材料。根据本发明，可以提供一种光盘基板，其中长时间通过的白斑数量 的时间非常小，信息的写入和读取的可靠性高度稳定。

    Polyhydropolyborates as polymerization catalysts
    6.
    发明授权
    Polyhydropolyborates as polymerization catalysts 有权
    聚氢硼酸酯作为聚合催化剂

    公开(公告)号：US06710155B2

    公开(公告)日：2004-03-23

    申请号：US10180879

    申请日：2002-06-27

    申请人： John Patrick Lemmon

    发明人： John Patrick Lemmon

    IPC分类号： C08G6400

    CPC分类号： C08G64/307

    摘要： The present invention relates to a synthetic method comprising contacting at least one diaryl carbonate with one or more dihydroxy aromatic compounds in the presence of a transesterification catalyst under melt polymerization conditions to afford a product polycarbonate. The transesterifcation catalysts used according to the method of the present invention are polyhydropolyborates in combination with tetraalkylammonium or tetraalkylphosphonium compounds which serve as co-catalysts. The transesterification catalysts employed according to the method of the present invention provide polycarbonates having reduced levels of Fries rearrangement product relative to conventionally employed catalysts such as sodium hydroxide in combination with tetramethylammonium hydroxide co-catalyst.

    摘要翻译： 本发明涉及一种合成方法，其包括在熔融聚合条件下在酯基转移催化剂存在下使至少一种碳酸二芳基酯与一种或多种二羟基芳族化合物接触，得到产物聚碳酸酯。 根据本发明的方法使用的酯交换催化剂是与用作助催化剂的四烷基铵或四烷基鏻化合物组合的多羟基多硼酸盐。 根据本发明的方法使用的酯交换催化剂提供了相对于常规使用的催化剂如氢氧化钠与四甲基氢氧化铵助催化剂的组合，具有降低的Fries重排产物水平的聚碳酸酯。

    Solid particles
    7.
    发明授权
    Solid particles 失效
    固体颗粒

    公开(公告)号：US06710152B1

    公开(公告)日：2004-03-23

    申请号：US10129151

    申请日：2002-05-02

    申请人： Rolf Lanze ,  Michael Prein ,  Uwe Hucks

    发明人： Rolf Lanze ,  Michael Prein ,  Uwe Hucks

    IPC分类号： C08G6400

    CPC分类号： C08G64/307

    摘要： Solid particles containing 10 to 90 parts by weight of a dihydroxy compound and 10 to 90 parts by weight of a carbonic acid ester are disclosed. Also disclosed is a process for the production of these particles, an apparatus suitable for the process and a method for their use in production of polycarbonate by transesterification of carbonic acid esters with dihydroxy compounds.

    摘要翻译： 公开了含有10至90重量份二羟基化合物和10至90重量份碳酸酯的固体颗粒。 还公开了制备这些颗粒的方法，适用于该方法的装置及其通过碳酸酯与二羟基化合物的酯交换反应生产聚碳酸酯的方法。

    Method for end-capping polycarbonate resins and composition for use in same
    8.
    发明授权
    Method for end-capping polycarbonate resins and composition for use in same 有权
    封端聚碳酸酯树脂的方法及其组合物

    公开(公告)号：US06706846B2

    公开(公告)日：2004-03-16

    申请号：US09682723

    申请日：2001-10-10

    申请人： Hans Peter Brack ,  Dennis Karlik ,  Theodorus Lambertus Hoeks ,  Irene Dris ,  John Morgan Whitney

    发明人： Hans Peter Brack ,  Dennis Karlik ,  Theodorus Lambertus Hoeks ,  Irene Dris ,  John Morgan Whitney

    IPC分类号： C08G6400

    CPC分类号： C08G64/307 ,  C08G64/14 ,  C08G64/42

    摘要： A method for end-capping polycarbonate resins, comprising the step of processing a mixture comprising a polycarbonate having free hydroxyl-end groups and an end-capping reagent in a melt transesterification reaction to produce a polycarbonate resin, wherein the end-capping reagent comprises a mixture of: (a) at least one species of a symmetrical activated aromatic carbonate, and (b) at least one species of an optionally-substituted phenol, whereby said end-capping reagent reacts with at least some of the free hydroxyl end-groups of the polycarbonate to produce an end-capped polycarbonate resin.

    摘要翻译： 一种封端聚碳酸酯树脂的方法，包括在熔融酯交换反应中处理包含游离羟基端基的聚碳酸酯和封端剂的混合物以制备聚碳酸酯树脂的步骤，其中封端剂包括 混合物：（a）至少一种对称活性芳族碳酸酯，和（b）至少一种任选取代的苯酚，其中所述封端剂与至少一些游离羟基端基反应 的聚碳酸酯以制备端封聚碳酸酯树脂。