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    Process for preparing a photochromic lens
    3.
    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
    4.
    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
    5.
    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
    7.
    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。

    Gamma radiation resistant polycarbonate compositions
    8.
    发明授权
    Gamma radiation resistant polycarbonate compositions 失效
    耐辐射聚碳酸酯组合物

    公开(公告)号：US5187211A

    公开(公告)日：1993-02-16

    申请号：US305301

    申请日：1989-02-01

    申请人： Charles E. Lundy ,  Sivaram Krishnan ,  Gerald L. Robbins ,  Rick L. Archey

    发明人： Charles E. Lundy ,  Sivaram Krishnan ,  Gerald L. Robbins ,  Rick L. Archey

    IPC分类号： C08K5/06 ,  C08K5/151

    CPC分类号： C08K5/06 ,  C08K5/151

    摘要： The invention relates to thermoplastic polycarbonate molding compositions which are rendered resistant to gamma-radiation by incorporating therewith about 0.1 to about 5 percent by weight of a stabilizing agent selected from the group consisting of ##STR1## wherein R is a hydrogen or a halogen atom or a C.sub.1 -C.sub.10 alkyl, a C.sub.6 -C.sub.10 alkyl, a C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.22 acyl, C.sub.6 -C.sub.18 alkylaryl or a C.sub.4 -C.sub.10 cycloalkyl radical, n is an integer of at least 1 and preferably 1 to about 100 and Y and Y.sup.1 independently are a hydrogen atom, a C.sub.6 -C.sub.10 aryl, C.sub.1 -C.sub.10 alkyl or a C.sub.6 -C.sub.18 alkylaryl or a C.sub.6 -C.sub.18 arylalkyl radical or ##STR2## wherein m is 1 or 3-6, R.sub.1, R.sub.2 and R.sub.3 independently are a hydrogen atom or a C.sub.1 -C.sub.10 alkyl, C.sub.6 -C.sub.10 aryl or a C.sub.6 -C.sub.18 alkylaryl radical.

    摘要翻译： 本发明涉及热塑性聚碳酸酯模塑组合物，其通过加入约0.1至约5重量％的选自下组的稳定剂，使其具有抗γ辐射的抗性。 其中R是氢或卤素原子或C 1 -C 10烷基，C 6 -C 10烷基，C 6 -C 10芳基，C 1 -C 22酰基，C 6 -C 18烷基芳基或C 4 -C 10环烷基，n是 至少1，优选1至约100，Y和Y 1独立地为氢原子，C 6 -C 10芳基，C 1 -C 10烷基或C 6 -C 18烷基芳基或C 6 -C 18芳烷基或III。 或 IV。 或 V.或 VI。 其中m为1或3-6，R 1，R 2和R 3独立地为氢原子或C 1 -C 10烷基，C 6 -C 10芳基或C 6 -C 18烷基芳基。