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    Process for the preparation of polycarbonates having sulfonanilide terminal groups
    3.
    发明授权
    Process for the preparation of polycarbonates having sulfonanilide terminal groups 失效
    制备具有磺酰苯胺端基的聚碳酸酯的方法

    公开(公告)号：US4471104A

    公开(公告)日：1984-09-11

    申请号：US439091

    申请日：1982-11-04

    申请人： Sivaram Krishnan ,  Wolfgang Cohnen ,  Dieter Neuray

    发明人： Sivaram Krishnan ,  Wolfgang Cohnen ,  Dieter Neuray

    IPC分类号： C08G63/00 ,  C08G64/00 ,  C08G64/14 ,  C08G63/62

    CPC分类号： C08G64/14

    摘要： The present invention relates to the preparation of aromatic polycarbonates by the known two-phase interface process, from diphenols characterized in that aromatic sulfonanilides are used as chain terminators in amounts of about 2 mol % to 20 mol %, preferably in amounts of about 2.5 mol % to 10 mol %, relative to mols of diphenols employed. In addition, the present invention relates to the aromatic polycarbonates obtainable by the process according to the invention. The products of this invention have been found to have better self extinguishing property compared to polycarbonates without sulfonamide end groups.

    摘要翻译： 本发明涉及通过已知的两相界面方法由二酚制备芳族聚碳酸酯，其特征在于芳香族磺酰苯胺用量为约2mol％至20mol％，优选约2.5mol 相对于所用二酚的摩尔数为10〜10摩尔％。 此外，本发明涉及通过本发明的方法获得的芳族聚碳酸酯。 发现本发明的产品与不含磺酰胺端基的聚碳酸酯相比具有更好的自熄性能。

    Flame retardant polycarbonate compositions
    5.
    发明授权
    Flame retardant polycarbonate compositions 失效
    阻燃聚碳酸酯组合物

    公开(公告)号：US4753994A

    公开(公告)日：1988-06-28

    申请号：US936852

    申请日：1986-12-02

    申请人： Russell P. Carter, Jr. ,  Ulrich Grigo ,  Sivaram Krishnan ,  Mark W. Witman ,  Klaus Kircher ,  Hans-Jurgen Kress ,  Wolfgang Alewelt

    发明人： Russell P. Carter, Jr. ,  Ulrich Grigo ,  Sivaram Krishnan ,  Mark W. Witman ,  Klaus Kircher ,  Hans-Jurgen Kress ,  Wolfgang Alewelt

    IPC分类号： C08J3/20 ,  C08J3/00 ,  C08J3/215 ,  C08L69/00

    CPC分类号： C08J3/005 ,  C08L69/00

    摘要： The present invention is related to polycarbonate molding compositions containing a co-precipitate of a polycarbonate resin and a fluoropolymer. This co-precipitate was found to be suitable as an additive for polycarbonate resins because it offers improved dispersibility with the resin and good flammability performance as well as aesthetic characteristics. The co-precipitate is prepared by first mixing an aqueous dispersion of a fluoropolymer with a polycarbonate solution and then precipitating both using a suitable precipitation agent. After isolation washing and drying the co-precipitate of the invention is suitable for incorporation in a polycarbonate resin optionally with known flame retarding agents. Molded parts prepared from the compositions of the invention are characterized by their improved homogeneity and flame retardance.

    摘要翻译： 本发明涉及含有聚碳酸酯树脂和含氟聚合物的共沉淀物的聚碳酸酯模塑组合物。 发现这种共沉淀物适合作为聚碳酸酯树脂的添加剂，因为它提供了与树脂的改善的分散性和良好的可燃性以及美学特性。 通过首先将含氟聚合物的水性分散体与聚碳酸酯溶液混合，然后使用合适的沉淀剂沉淀二者来制备共沉淀物。 分离洗涤和干燥后，本发明的共沉淀物适合于任选地使用已知的阻燃剂掺入聚碳酸酯树脂中。 由本发明组合物制备的成型部件的特征在于其均匀性和阻燃性的改善。

    Process for preparing a photochromic lens
    6.
    发明授权
    Process for preparing a photochromic lens 有权
    光致变色镜片的制备方法

    公开(公告)号：US06367930B1

    公开(公告)日：2002-04-09

    申请号：US09476251

    申请日：1999-12-30

    申请人： Pia I. Santelices ,  James N. Rieck ,  Jack C. Chan ,  Sivaram Krishnan ,  William G. Curtis ,  Robert Allen Pyles

    发明人： Pia I. Santelices ,  James N. Rieck ,  Jack C. Chan ,  Sivaram Krishnan ,  William G. Curtis ,  Robert Allen Pyles

    IPC分类号： G02C710

    CPC分类号： G02B5/23

    摘要： A process for making a photochromic optical lens is disclosed. In a first embodiment of the process a multi-plied laminate, containing a ply of photochromic thermoplastic polyurethane (herein “TPU”) and a ply containing thermoplastic polycarbonate, is first placed in the cavity of a suitable mold. The ply that contains polycarbonate resin is placed facing the cavity. Thermoplastic polycarbonate resin is then injected into the cavity. In a second embodiment, referred to as an over-mold method, polycarbonate is first injection molded into a molding cavity to form a substrate. Photochromic TPU is, in a subsequent step, injected into the cavity to form a superstrate overlay. In both embodiments, the articles thus molded are suitable for the preparation of optical lenses.

    摘要翻译： 公开了制造光致变色光学透镜的方法。 在该方法的第一实施方案中，首先将含有一层光致变色热塑性聚氨酯（本文中为“TPU”）和一层含热塑性聚碳酸酯的多层叠层材料放置在合适的模具的空腔中。 包含聚碳酸酯树脂的层被放置成面向空腔。 然后将热塑性聚碳酸酯树脂注入腔中。 在称为过模制方法的第二实施方案中，首先将聚碳酸酯注塑成型腔以形成基材。 在随后的步骤中，光致变色TPU被注入空腔中以形成覆盖层。 在这两个实施例中，如此模制的制品适用于制备光学透镜。

    Color-stable polycarbonate composition and articles molded therefrom
    7.
    再颁专利
    Color-stable polycarbonate composition and articles molded therefrom 有权
    颜色稳定的聚碳酸酯组合物和由其模制的制品

    公开(公告)号：USRE37200E1

    公开(公告)日：2001-05-29

    申请号：US09379515

    申请日：1999-08-23

    申请人： Kevin F. Dunay ,  Winfried G. Paul ,  Sivaram Krishnan

    发明人： Kevin F. Dunay ,  Winfried G. Paul ,  Sivaram Krishnan

    IPC分类号： C08K534

    CPC分类号： C08K5/34924 ,  C08K5/1345 ,  C08K5/3475 ,  C08K5/375 ,  Y10T428/31507 ,  C08L69/00

    摘要： A thermoplastic polycarbonate molding composition free from organo phosphorus compounds and having an improved resistance to discoloration caused by exposure to High Intensity Discharge (HID) light and heat is disclosed. Accordingly, the molding composition contains (co)polycarbonate resin, a dimeric benzotriazole and an ester of a 3,5-di-tert-butyl-4-hydroxyhydrocinnamic acid. In a preferred embodiment, a sheet made of (co)polycarbonate resin is rendered improved resistance to discoloration by having applied to at least one of its surfaces an adherent protective film prepared from the polycarbonate composition of the invention.

    摘要翻译： 公开了一种不含有机磷化合物的热塑性聚碳酸酯模塑组合物，并且具有改善的抗暴露于高强度放电（HID）光和热的变色性。 因此，成型组合物含有（共）聚碳酸酯树脂，二聚苯并三唑和3,5-二叔丁基-4-羟基氢化肉桂酸的酯。 在优选的实施方案中，通过将至少一个表面施加到由本发明的聚碳酸酯组合物制备的粘合保护膜，由（共）聚碳酸酯树脂制成的片材具有改进的抗变色性。

    Polycarbonate compositions having improved release properties
    8.
    发明授权
    Polycarbonate compositions having improved release properties 失效
    具有改进的脱模性能的聚碳酸酯组合物

    公开(公告)号：US5705546A

    公开(公告)日：1998-01-06

    申请号：US662572

    申请日：1996-06-13

    申请人： Sivaram Krishnan ,  James B. Johnson

    发明人： Sivaram Krishnan ,  James B. Johnson

    IPC分类号： C08K5/1515 ,  C08L69/00 ,  C08K5/15

    CPC分类号： C08K5/1515 ,  C08L69/00

    摘要： A thermoplastic molding composition having improved release properties is disclosed. The composition contains a polycarbonate and an additive amount of an epoxy conforming structurally to ##STR1## where R is a member selected from the group consisting of glyceryl and trimethyl propyl radicals, x is 0 to 20 and R' is a C.sub.1-4 alkyl radical.

    摘要翻译： 公开了具有改进的脱模性能的热塑性模塑组合物。 组合物含有聚碳酸酯和结构上符合的环氧树脂的添加量，其中R是选自甘油基和三甲基丙基的成员，x是0至20，R'是C 1-4烷基 。

    Pigmented polycarbonate composition having high impact strength and good cosmetics
    10.
    发明授权
    Pigmented polycarbonate composition having high impact strength and good cosmetics 失效
    具有高冲击强度和良好化妆品的着色聚碳酸酯组合物

    公开(公告)号：US5194495A

    公开(公告)日：1993-03-16

    申请号：US919617

    申请日：1992-07-24

    申请人： Charles E. Lundy ,  Douglas G. Powell ,  Sivaram Krishnan

    发明人： Charles E. Lundy ,  Douglas G. Powell ,  Sivaram Krishnan

    IPC分类号： C08L69/00

    CPC分类号： C08L69/00

    摘要： A pigmented thermoplastic molding composition is disclosed comprising(i) about 90 to 98 percent of an aromatic polycarbonate,(ii) about 1 to 9 percent of ABS, and(iii) about 1 to 9 percent of a grafted olefinic copolymer which is a graft polymer of one or more unsaturated dicarboxylic acid or the anhydride of said acid on an olefinic copolymer backbone.The composition is noted to have good mechanical properties and the articles molded therefrom have good cosmetics.

    摘要翻译： 公开了着色的热塑性模塑组合物，其包含（i）约90至98％的芳族聚碳酸酯，（ii）约1至9％的ABS，和（iii）约1至9％的接枝的烯烃共聚物，其为接枝 一种或多种不饱和二羧酸的聚合物或所述酸的酸酐在烯烃共聚物主链上。 注意组合物具有良好的机械性能，并且由其模制的制品具有良好的化妆品。