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    Method for purifying 1,1-bis(4′-hydroxy-3′-methylphenyl)cyclohexane and methods of producing polycarbonates therefrom
    1.
    发明授权
    Method for purifying 1,1-bis(4′-hydroxy-3′-methylphenyl)cyclohexane and methods of producing polycarbonates therefrom 失效
    纯化1,1-双（4'-羟基-3'-甲基苯基）环己烷的方法及其制备聚碳酸酯的方法

    公开(公告)号：US06646097B1

    公开(公告)日：2003-11-11

    申请号：US10065573

    申请日：2002-10-31

    申请人： Ashok Shyadligeri ,  Gary C. Davis ,  Debjani Kapila ,  Ramesh Krishnamurti ,  A. S. Radhakrishna ,  Veeraraghavan Srinivasan

    发明人： Ashok Shyadligeri ,  Gary C. Davis ,  Debjani Kapila ,  Ramesh Krishnamurti ,  A. S. Radhakrishna ,  Veeraraghavan Srinivasan

    IPC分类号： C08G6400

    CPC分类号： C08G64/24 ,  C07C37/685 ,  C07C37/84 ,  C07C2601/14 ,  C08G64/307 ,  C07C39/17

    摘要： A method for purifying 1,1-bis(4′-hydroxy-3′-methylphenyl)cyclohexane comprises dissolving said 1,1-bis(4′-hydroxy-3′-methylphenyl)cyclohexane in a first solvent consisting essentially of an alcohol to form a first solution; filtering said first solution; adding a second solvent consisting essentially of water to the filtered first solution to form a second solution, wherein said second solution comprises about 40 parts to about 95 parts of the first solvent per 100 parts of the combined weight of the first and second solvents; crystallizing said 1,1-bis(4′-hydroxy-3′-methylphenyl) cyclohexane from said second solution to form a first crystalline product; dissolving said first crystalline product in a third solvent to form a third solution, wherein the third solvent comprises an aromatic compound; and crystallizing said 1,1-bis(4′-hydroxy-3′-methylphenyl)cyclohexane from said third solution to produce a second crystalline product.

    摘要翻译： 纯化1,1-双（4'-羟基-3'-甲基苯基）环己烷的方法包括将所述1,1-双（4'-羟基-3'-甲基苯基）环己烷溶解在基本上由醇组成的第一溶剂中 形成第一个解决方案; 过滤所述第一溶液; 将基本上由水组成的第二溶剂加入到过滤的第一溶液中以形成第二溶液，其中所述第二溶液每100份第一和第二溶剂的组合重量包含约40份至约95份的第一溶剂; 从所述第二溶液中结晶所述1,1-双（4'-羟基-3'-甲基苯基）环己烷以形成第一结晶产物; 将所述第一结晶产物溶解在第三溶剂中以形成第三溶液，其中所述第三溶剂包含芳族化合物; 并从所述第三溶液中结晶出所述1,1-双（4'-羟基-3'-甲基苯基）环己烷以产生第二结晶产物。

    METHODS FOR PRODUCING AND PURIFYING 2-HYDROCARBYL-3,3-BIS(4-HYDROXYARYL)PHTHALIMIDINE MONOMERS AND POLYCARBONATES DERIVED THEREFROM
    2.
    发明申请
    METHODS FOR PRODUCING AND PURIFYING 2-HYDROCARBYL-3,3-BIS(4-HYDROXYARYL)PHTHALIMIDINE MONOMERS AND POLYCARBONATES DERIVED THEREFROM 审中-公开
    2-烃基-3,3-双（4-羟基）苯基咪唑单体和衍生自其的聚碳酸酯的生产和纯化方法

    公开(公告)号：US20080033123A1

    公开(公告)日：2008-02-07

    申请号：US11848009

    申请日：2007-08-30

    申请人： Veeraraghavan Srinivasan ,  Suresh Shanmugam ,  Gautam Chatterjee ,  Anantharaman Dhanabalan ,  Vinod Rai

    发明人： Veeraraghavan Srinivasan ,  Suresh Shanmugam ,  Gautam Chatterjee ,  Anantharaman Dhanabalan ,  Vinod Rai

    IPC分类号： C08G64/04 ,  C07D209/44 ,  C08F6/00

    CPC分类号： C08G64/12 ,  C07D209/34

    摘要： Disclosed herein is a method for producing a 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine. The method comprises forming a reaction mixture comprising at least one substituted or unsubstituted phenolphthalein, at least one substituted or unsubstituted primary hydrocarbyl amine, and an acid catalyst; and heating the reaction mixture to a temperature of less than 180° C. to remove a distillate comprising water and form a crude 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine product; where the 2-hydrocarbyl-3,3-bis(4-hydroxyaryl)phthalimidine has a formula: where R1 is selected from the group consisting of a hydrogen and a hydrocarbyl group, and R2 is selected from the group consisting of a hydrogen, a hydrocarbyl group, and a halogen.

    摘要翻译： 本文公开了一种2-烃基-3,3-双（4-羟基芳基）苯并二氮吡啶的制备方法。 该方法包括形成包含至少一种取代或未取代的酚酞，至少一种取代或未取代的伯烃基胺和酸催化剂的反应混合物; 并将反应混合物加热至低于180℃的温度以除去包含水的馏出物并形成粗2-烃基-3,3-双（4-羟基芳基）苯并二氮嘧啶产物; 其中2-烃基-3,3-双（4-羟基芳基）苯并二氮嘧啶具有下式：其中R 1选自氢和烃基， 2 H选自氢，烃基和卤素。

    Dimensionally stable polycarbonate articles
    10.
    发明授权
    Dimensionally stable polycarbonate articles 失效
    尺寸稳定的聚碳酸酯制品

    公开(公告)号：US06552158B1

    公开(公告)日：2003-04-22

    申请号：US10064348

    申请日：2002-07-03

    申请人： Veeraraghavan Srinivasan ,  Dibakar Dhara ,  Rein Mollerus Faber ,  Gautam Chatterjee ,  Jan Pleun Lens

    发明人： Veeraraghavan Srinivasan ,  Dibakar Dhara ,  Rein Mollerus Faber ,  Gautam Chatterjee ,  Jan Pleun Lens

    IPC分类号： C08G6400

    CPC分类号： G11B7/2534 ,  C08G64/06

    摘要： The disclosure relates to articles using polycarbonates produced by a melt transesterification polymerization method using bis(hydroxyaryl)cyclohexanes. Such polycarbonates have suitable glass transition temperatures and outstanding dimensional stabilities, thus making them particularly useful for making articles possessing high temperature stability, particularly for use in optical articles such as high density optical data storage and recordable media.

    摘要翻译： 本公开涉及使用通过使用双（羟基芳基）环己烷的熔融酯交换聚合方法制备的聚碳酸酯的制品。 这种聚碳酸酯具有合适的玻璃化转变温度和优异的尺寸稳定性，因此使其特别适用于具有高温稳定性的制品，特别适用于光学制品如高密度光学数据存储和可记录介质。