Compositions of siloxane polycarbonate block copolymers and high heat
polycarbonates
    24.
    发明授权
    Compositions of siloxane polycarbonate block copolymers and high heat polycarbonates 失效
    硅氧烷聚碳酸酯嵌段共聚物和高热聚碳酸酯的组合物

    公开(公告)号:US5455310A

    公开(公告)日:1995-10-03

    申请号:US290453

    申请日:1994-08-15

    CPC classification number: C08L69/00 C08L83/10

    Abstract: A thermoplastic composition which comprises a siloxane polycarbonate block copolymer wherein the polysiloxane segments of the copolymer are of the formula: ##STR1## where R.sup.1, R.sup.2, Y, D, A, X, A' and E are as defined herein, and high heat polycarbonates containing recurring or repeating polycarbonate units of the formula: ##STR2## wherein Z is --O--, --N(R.sup.3)-- or a mixture thereof and R.sup.3 is selected from hydrogen, hydrocarbyl and halogen-substituted hydrocarbyl.

    Abstract translation: 一种热塑性组合物,其包含硅氧烷聚碳酸酯嵌段共聚物,其中所述共聚物的聚硅氧烷链段具有下式:其中R 1,R 2,Y,D,A,X(IIA)或(IIB) ,A'和E如本文所定义,并且含有下式的重复或重复的聚碳酸酯单元的高热聚碳酸酯:其中Z为-O - , - N(R3) - 或其混合物,R3为 选自氢,烃基和卤素取代的烃基。

    Ultraviolet radiation resistant polyphthalatecarbonate resin
    26.
    发明授权
    Ultraviolet radiation resistant polyphthalatecarbonate resin 失效
    耐紫外线辐射聚对苯二甲酸碳酸酯树脂

    公开(公告)号:US5070177A

    公开(公告)日:1991-12-03

    申请号:US372240

    申请日:1989-06-26

    CPC classification number: C08G63/64

    Abstract: An aromatic polyphthalatecarbonate resin having a small percentage of phthalate units therein exhibits improved resistance to hazing and yellowing upon exposure to ultraviolet radiation. The polyphthalate carbonate resin is derived from the reaction products of a phthalate compound, a dihydric phenol and a carbonate precursor.

    Abstract translation: 具有小百分比的邻苯二甲酸酯单元的芳族聚对苯二甲酸酯碳酸酯树脂在暴露于紫外线辐射时显示出改善的耐候性和变黄性。 聚邻苯二甲酸酯碳酸酯树脂衍生自邻苯二甲酸酯化合物,二元酚和碳酸酯前体的反应产物。

    Liquid crystalline poly (2,6-benzothiazole) compositions, process, and
products
    27.
    发明授权
    Liquid crystalline poly (2,6-benzothiazole) compositions, process, and products 失效
    液晶聚(2,6-苯并噻唑)组合物,方法和产品

    公开(公告)号:US4533724A

    公开(公告)日:1985-08-06

    申请号:US451741

    申请日:1982-09-17

    CPC classification number: C09K19/3804 C08G73/18 C08G75/32 D01F6/74

    Abstract: Novel compositions comprising a high concentration of poly(2,6-benzothiazole) and certain polyphosphoric acids are prepared. Such compositions are optically anisotropic (liquid crystalline), capable of exhibiting excellent cohesive strength, and are especially suited to the production of high molecular weight ordered polymer fibers by dry-jet wet spinning. These liquid crystalline compositions are capable of being drawn through long air gap distances and spun at exceptionally high spin draw ratios. Fibers, films and other articles formed from these liquid crystalline compositions exhibit exceptionally high physical and heat resistant properties.

    Abstract translation: PCT No.PCT / US82 / 01286 Sec。 371日期1982年9月17日 102(e)1982年9月17日PCT PCT卷号1982年9月17日PCT公布。 公开号WO84 / 01161 日期:1984年3月29日。制备包含高浓度聚(2,6-苯并噻唑)和某些多磷酸的新型组合物。 这种组合物是光学各向异性(液晶),能够表现出优异的内聚强度,并且特别适用于通过干喷湿法纺丝生产高分子量有序聚合物纤维。 这些液晶组合物能够通过长的气隙距离被拉伸并以非常高的旋转拉伸比旋转。 由这些液晶组合物形成的纤维,薄膜和其它制品表现出极高的物理和耐热性能。

    FLAME RETARDANT POLY(SILOXANE) COPOLYMER COMPOSITIONS, METHODS OF MANUFACTURE, AND ARTICLES FORMED THEREFROM
    28.
    发明申请
    FLAME RETARDANT POLY(SILOXANE) COPOLYMER COMPOSITIONS, METHODS OF MANUFACTURE, AND ARTICLES FORMED THEREFROM 有权
    阻燃聚合物(硅氧烷)共聚物组合物,制造方法及其形成的制品

    公开(公告)号:US20120251750A1

    公开(公告)日:2012-10-04

    申请号:US13251122

    申请日:2011-09-30

    Abstract: A poly(siloxane) copolymer composition comprising: a first polymer comprising a first repeating unit, and a poly(siloxane) block unit, a second polymer different from the first polymer and comprising of bromine; and optionally, one or more third polymers different from the first polymer and second polymer; wherein siloxane units are present in the composition in an amount of at least 0.3 wt %, and bromine is present in the composition in an amount of at least 7.8 wt %, each based on the sum of the wt % of the first, second, and optional one or more third polymers; and further wherein an article molded from the composition has an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, and an E662 smoke test Dmax value of less than 200.

    Abstract translation: 一种聚(硅氧烷)共聚物组合物,其包含:包含第一重复单元的第一聚合物和聚(硅氧烷)嵌段单元,不同于第一聚合物并包含溴的第二聚合物; 和任选的一种或多种不同于第一聚合物和第二聚合物的第三聚合物; 其中硅氧烷单元以至少0.3重量%的量存在于组合物中,并且溴以至少7.8重量%的量存在于组合物中,各自基于第一,第二, 和任选的一种或多种第三聚合物; 并且其中由所述组合物成型的制品具有小于65kW-min / m 2的OSU集成的2分钟的热释放试验值和小于65kW / m 2的峰值放热率,以及E662烟雾试验Dmax值 小于200。

    Terpolymer having aromatic polyester, polysiloxane and polycarbonate
segments
    30.
    发明授权
    Terpolymer having aromatic polyester, polysiloxane and polycarbonate segments 失效
    具有芳族聚酯,聚硅氧烷和聚碳酸酯链段的三元共聚物

    公开(公告)号:US5932677A

    公开(公告)日:1999-08-03

    申请号:US68445

    申请日:1993-05-27

    CPC classification number: C08G77/448

    Abstract: Terpolymers suitable as molding resins are provided having aromatic polyester segments polycarbonate segments and polysiloxane segments of the structure ##STR1## where R.sup.1, R.sup.2, Y and D are as defined herein, and where the weight percentage of polyester and polycarbonate segments is from 50 to 99%, preferably 92 to 96%, and the weight percentage of polysiloxane segments is from 50 to 1%, preferably from 8 to 4%. Also provided is a one-step process to prepare the new terpolymers by reacting together a siloxane, a bisphenol and an aromatic dicarboxylic acid halide.

    Abstract translation: 提供适合作为模制树脂的三元共聚物,其具有芳族聚酯链段聚碳酸酯链段和结构的聚硅氧烷链段,其中R 1,R 2,Y和D如本文所定义,并且其中聚酯和聚碳酸酯链段的重量百分数为50-99% 92〜96%,聚硅氧烷链段的重量百分比为50〜1%,优选为8〜4%。 还提供了通过使硅氧烷,双酚和芳族二羧酸卤化物反应而制备新的三元共聚物的一步法。

Patent Agency Ranking