Process for the drying and heat-treatment of polybenzazole films
    1.
    发明授权
    Process for the drying and heat-treatment of polybenzazole films 失效
    聚吲哚薄膜的干燥和热处理工艺

    公开(公告)号:US5445779A

    公开(公告)日:1995-08-29

    申请号:US182818

    申请日:1994-01-14

    CPC分类号: C08J5/18 C08J2379/04

    摘要: A simplified and more efficient process is described for drying (and heat-treating) a lyotropic polybenzazole film in which the film is constrained in only the machine direction during drying (and heat-treating). The amount of stretching in the transverse direction the film undergoes prior to it being coagulated can be increased to compensate for the relaxation of the film during the drying process and the lack of stretching during the heat-treating process. Films made in this manner have acceptable finished properties.

    摘要翻译: 描述了用于干燥(和热处理)在干燥(和热处理)期间仅在机器方向上限制膜的溶致性聚苯并吡唑膜的简化和更有效的方法。 可以增加膜在其凝固之前在横向上的拉伸量,以补偿干燥过程中膜的松弛和在热处理过程中缺乏拉伸。 以这种方式制成的薄膜具有可接受的成品性能。

    POLYPROPYLENE COMPOSITION FOR AIR QUENCHED BLOWN FILMS
    4.
    发明申请
    POLYPROPYLENE COMPOSITION FOR AIR QUENCHED BLOWN FILMS 有权
    空气灭菌膜的聚丙烯组合物

    公开(公告)号:US20100028702A1

    公开(公告)日:2010-02-04

    申请号:US12474776

    申请日:2009-05-29

    摘要: The invention is directed to a polypropylene resin, which is suitable for manufacturing an air quenched blown film. The resin has a melt flow rate of greater than 5 g/10 min, less than 2% xylene solubles, a pentad isotacticity of greater than 95%, an isotactic pentad/triad ratio of greater than 95%, a crystallinity of at least 65%, and a crystallization temperature of at least 127° C. The polypropylene resin contains from 500 ppm to 2500 ppm of a nucleator/clarifier additive. An quenched blown film made from resin exhibits a crystallization onset temperature of at least 116° C. and a crystallization half-life time of less 4.1 seconds or less when tested using fast DSC analysis with a scan rate of 200° C./minute.

    摘要翻译: 本发明涉及一种适用于制造空气淬火吹塑薄膜的聚丙烯树脂。 该树脂的熔体流动速率大于5g / 10min,二甲苯可溶物低于2%,五单体全同立构规整度大于95%,全同立构五单元组/三单元组比大于95%,结晶度至少为65 %,结晶温度至少为127℃。聚丙烯树脂含有500ppm至2500ppm的成核剂/澄清剂添加剂。 当使用快速DSC分析以200℃/分钟的扫描速率进行测试时,由树脂制成的淬火吹塑薄膜显示至少116℃的结晶起始温度和小于4.1秒或更低的结晶半衰期。

    Jacketed polymer optical waveguides
    7.
    发明授权
    Jacketed polymer optical waveguides 失效
    夹套聚合物光波导

    公开(公告)号:US4844578A

    公开(公告)日:1989-07-04

    申请号:US196587

    申请日:1988-05-03

    IPC分类号: G02B6/00 B29D11/00 G02B6/44

    CPC分类号: G02B6/443 G02B6/02033

    摘要: The invention is a jacketed polymer optical fiber which comprises: an optical fiber which comprises a core formed from a light transmitting polymeric material having a first refractive index and a cladding formed from a polymeric material having a second refractive index which is lower than the first refractive index; and a jacket about the optical fiber wherein the jacket comprises a chlorinated polyethylene. The jacketed fibers of this invention have a higher service temperature than polyethylene jacketed fibers. The jacketed polymer optical waveguides of this invention are jacketed under conditions such that the optical properties of the polymer optical waveguide are not substantially degraded. The jacketed polymer optical waveguides have relatively low brittleness at use temperatures, good rigidity, and good solvent resistance. They also contain no material which tend to migrate into the polymer optical waveguide.

    摘要翻译: 本发明是一种夹套聚合物光纤,其包括:光纤,其包括由具有第一折射率的透光聚合材料形成的芯和由具有低于第一折射率的第二折射率的聚合物材料形成的包层 指数; 以及围绕光纤的护套,其中护套包括氯化聚乙烯。 本发明的夹芯纤维具有比聚乙烯护套纤维更高的使用温度。 本发明的夹层聚合物光波导在聚合物光波导的光学特性基本上不劣化的条件下被夹套。 夹套聚合物光波导在使用温度下具有相对低的脆性,良好的刚性和良好的耐溶剂性。 它们也不含有倾向于迁移到聚合物光波导中的材料。

    PROCESS FOR DRY-GRINDING A POLYSACCHARIDE DERIVATIVE
    9.
    发明申请
    PROCESS FOR DRY-GRINDING A POLYSACCHARIDE DERIVATIVE 有权
    用于干燥多糖衍生物的方法

    公开(公告)号:US20130112787A1

    公开(公告)日:2013-05-09

    申请号:US13498621

    申请日:2010-07-28

    IPC分类号: B02C19/18 B02C23/24

    摘要: In a process for producing a particulate polysaccharide derivative by dry-grinding a moist polysaccharide derivative, one or more of the properties selected from median diameter, median length, bulk density and dissolution rate is controlled by controlling the temperature of the polysaccharide derivative prior to thy-grinding. Advantageously one or more of the properties selected from median diameter, median length, bulk density and dissolution rate of the particles after thy-grinding is adjusted to a first value by a first temperature of the polysaccharide derivative prior to thy-grinding and is adjusted to a second value by a second temperature.

    摘要翻译: 在通过干式研磨湿多糖衍生物制备颗粒状多糖衍生物的方法中,通过控制多糖衍生物在您之前的温度来控制从中值粒径,中值长度,体积密度和溶解速率中选择的一种或多种性质 研磨。 有利的是,一个或多个选自中值粒径,中值长度,体积密度和磨细后的颗粒的溶解速度的性质在碾磨之前通过多糖衍生物的第一温度调节至第一值,并调节至 第二值为第二温度。

    Polypropylene composition for air quenched blown films
    10.
    发明授权
    Polypropylene composition for air quenched blown films 有权
    空气淬火吹塑薄膜的聚丙烯组合物

    公开(公告)号:US08133963B2

    公开(公告)日:2012-03-13

    申请号:US12474776

    申请日:2009-05-29

    摘要: The invention is directed to a polypropylene resin, which is suitable for manufacturing an air quenched blown film. The resin has a melt flow rate of greater than 5 g/10 min, less than 2% xylene solubles, a pentad isotacticity of greater than 95%, an isotactic pentad/triad ratio of greater than 95%, a crystallinity of at least 65%, and a crystallization temperature of at least 127° C. The polypropylene resin contains from 500 ppm to 2500 ppm of a nucleator/clarifier additive. An quenched blown film made from resin exhibits a crystallization onset temperature of at least 116° C. and a crystallization half-life time of less 4.1 seconds or less when tested using fast DSC analysis with a scan rate of 200° C./minute.

    摘要翻译: 本发明涉及一种适用于制造空气淬火吹塑薄膜的聚丙烯树脂。 该树脂的熔体流动速率大于5g / 10min,二甲苯可溶物低于2%,五单体全同立构规整度大于95%,全同立构五单元组/三单元组比大于95%,结晶度至少为65 %,结晶温度至少为127℃。聚丙烯树脂含有500ppm至2500ppm的成核剂/澄清剂添加剂。 当使用快速DSC分析以200℃/分钟的扫描速率进行测试时,由树脂制成的淬火吹塑薄膜显示至少116℃的结晶起始温度和小于4.1秒或更低的结晶半衰期。