利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

82 条记录 (耗时 0.032 秒)

    Flame retardant polycarbonate compositions
    1.
    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。

    Article molded from a polycarbonate composition having improved platability
    6.
    发明授权
    Article molded from a polycarbonate composition having improved platability 失效
    由具有改进的电镀性的聚碳酸酯组合物成型的制品

    公开(公告)号：US5087524A

    公开(公告)日：1992-02-11

    申请号：US519036

    申请日：1990-05-04

    申请人： Sivaram Krishnan ,  Ronald L. Price ,  Peter H. C. Shu ,  Mark W. Witman

    发明人： Sivaram Krishnan ,  Ronald L. Price ,  Peter H. C. Shu ,  Mark W. Witman

    IPC分类号： C08L69/00

    CPC分类号： C08L69/00 ,  Y10T428/31507

    摘要： A molding composition comprising a polycarbonate resin and plating modifier was found to be suitable for preparing metal coated articles where the metal coating is deposited by an electroless process. The plating modifier in accordance with the invention is at least one member selected from the group consisting of a polyanhydride, and a monovinyl aromatic-acrylonitrile copolymer. An advantageous embodiment of the invention includes incorporating in the molding composition a flame retarding amount of a conventional flame retarding agent for polycarbonate compositions.

    摘要翻译： 发现包含聚碳酸酯树脂和电镀改性剂的模塑组合物适用于制备金属涂层制品，其中通过无电镀方法沉积金属涂层。 根据本发明的电镀改性剂是选自聚酐和单乙烯基芳族 - 丙烯腈共聚物中的至少一种。 本发明的有利实施方案包括在模塑组合物中加入阻燃剂量的聚碳酸酯组合物的常规阻燃剂。

    Process for the preparation of copolycarbonates of sulfonyl diphenol
    7.
    发明授权
    Process for the preparation of copolycarbonates of sulfonyl diphenol 失效
    制备磺酰基二酚共聚碳酸酯的方法

    公开(公告)号：US4535143A

    公开(公告)日：1985-08-13

    申请号：US637945

    申请日：1984-08-06

    申请人： Ronald L. Price ,  Mark W. Witman ,  Sivaram Krishnan

    发明人： Ronald L. Price ,  Mark W. Witman ,  Sivaram Krishnan

    IPC分类号： C08G63/00 ,  C08G63/199 ,  C08G64/08 ,  C08G64/24 ,  C08G63/62

    CPC分类号： C08G64/24 ,  C08G64/081

    摘要： The present invention is directed to a continuous process for the preparation of copolycarbonates of sulfonyl diphenol (SDP) containing at least about 15, preferably about 15 to about 80 percent by weight of SDP and characterized in the particular system catalyzing the process reaction. The invention thus entails improvements and modifications to the known interfacial polycondensation process rendering it applicable to the preparation of copolycarbonates containing a high level of SDP comprising a combination of catalysts namely a phase transfer catalyst and a condensation catalyst.

    摘要翻译： 本发明涉及制备含有至少约15重量％，优选约15至80重量％的SDP的磺酰基二酚（SDP）的共聚碳酸酯的连续方法，其特征在于催化该工艺反应的特定体系。 因此，本发明需要对已知的界面缩聚方法进行改进和修改，使其适用于含有高水平SDP的共聚碳酸酯的制备，该组合包括催化剂即相转移催化剂和缩合催化剂的组合。

    Process for preparing a photochromic lens
    9.
    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
    10.
    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。