Resin transfer molding process for composites
    3.
    发明授权
    Resin transfer molding process for composites 失效
    复合材料的树脂传递模塑工艺

    公开(公告)号:US5730922A

    公开(公告)日:1998-03-24

    申请号:US679324

    申请日:1996-07-12

    摘要: A laminate has at least two layers, at least one of which comprises a polymer having more than one perfluorocyclobutane group. Such polymers impart qualities of environmental or protection, chemical and solvent resistance, hydrolytic stability, lubricity, low dielectric, hydrostatic stability, weatherability, flame resistance, chemical resistance, hydrolytic stability, lubricity, environmental protection, scratch resistance, solvent resistance, surface passivation, water repellancy, lower surface refractive index, lower surface coefficient of friction, fluid barrier properties, oil repellancy, thermal stability, and/or reduced moisture pick-up. Additionally, the coatings are optically clear, easy to apply either neat, in a solvent or otherwise, have relatively low cure temperatures for their temperature resistance, and exhibit insulating and planarizing capabilities.

    摘要翻译: 层压体具有至少两层,其中至少一层包含具有多于一个全氟环丁烷基团的聚合物。 这些聚合物赋予环境或保护性,耐化学性和耐溶剂性,水解稳定性,润滑性,低电介质,静水稳定性,耐候性,阻燃性,耐化学性,水解稳定性,润滑性,环境保护,耐刮擦性,耐溶剂性,表面钝化, 防水性,下表面折射率,较低的表面摩擦系数,流体阻隔性,拒油性,热稳定性和/或降低的吸湿性。 此外,涂层是光学透明的,易于在溶剂中施用,或者以其它方式施加,其耐温度具有相对低的固化温度,并且具有绝缘和平坦化能力。

    Method of preparing complex-shaped ceramic-metal composite articles and
the products produced thereby
    5.
    发明授权
    Method of preparing complex-shaped ceramic-metal composite articles and the products produced thereby 失效
    制备复合陶瓷 - 金属复合制品的方法及由此制备的产品

    公开(公告)号:US5930581A

    公开(公告)日:1999-07-27

    申请号:US777984

    申请日:1996-12-24

    摘要: The invention is a complex-shaped article, comprising an article prepared by joining at least one multi-phase ceramic-metal part and at least one shaped part of another material, wherein the theoretical density of the at least one ceramic-metal part is greater than 80 percent.In another aspect, the invention is a process for preparing complex-shaped articles, comprising:(a) forming at least one ceramic-metal part;(b) forming at least one shaped part of another material; and(c) joining the at least one shaped ceramic-metal part with the at least one shaped part of another material such that a complex-shaped article is formed.The invention is a less costly and time-consuming process for preparing complex-shaped composite articles wherein the articles are formed of two or more selected materials wherein one of the materials is a ceramic-metal composite.

    摘要翻译: 本发明是一种复杂形状的制品,其包括通过将至少一个多相陶瓷 - 金属部件和至少一个其它材料的成形部分接合而制备的制品,其中至少一个陶瓷 - 金属部件的理论密度更大 超过80%。 另一方面,本发明是一种制备复杂形状制品的方法,包括:(a)形成至少一种陶瓷 - 金属部分; (b)形成另一材料的至少一个成形部分; 和(c)将至少一个成形的陶瓷 - 金属部件与另一种材料的至少一个成形部分接合,从而形成复合物状物品。 本发明是制备复杂形状的复合制品的成本较低且耗时的方法,其中制品由两种或多种选择的材料形成,其中材料之一是陶瓷 - 金属复合材料。

    Process for recovering 2,3,5,6-tetrachloropyridine
    6.
    发明授权
    Process for recovering 2,3,5,6-tetrachloropyridine 失效
    回收2,3,5,6-四氯吡啶的方法

    公开(公告)号:US4225718A

    公开(公告)日:1980-09-30

    申请号:US14385

    申请日:1979-02-22

    IPC分类号: C07D213/61 C07D213/04

    CPC分类号: C07D213/61

    摘要: Substantially pure 2,3,5,6-tetrachloropyridine is recovered from a mixture of chlorinated pyridines containing initially 2,3,5,6-tetrachloropyridine and other chlorinated pyridines in an improved process which comprises (a) reacting by contacting a first mixture of chlorinated pyridines with chlorine in the presence of a strong Lewis acid catalyst to thereby obtain a second mixture consisting essentially of 2,3,5,6-tetrachloropyridine and pentachloropyridine, and (b) recovering the 2,3,5,6-tetrachloropyridine from said second mixture. The reaction is normally conducted at a temperature of from about 150.degree. C. to about 300.degree. C. by pressurizing chlorine into a molten mixture of the chlorinated pyridines and maintaining such conditions until substantially all of the isomers have been converted to the symmetrical tetrachloropyridine or pentachloropyridine.

    摘要翻译: 在改进的方法中,从最初含有2,3,5,6-四氯吡啶和其它氯化吡啶的氯化吡啶的混合物中回收基本上纯的2,3,5,6-四氯吡啶,其包括(a)通过使第 在强路易斯酸催化剂存在下用氯氯化吡啶,由此得到基本上由2,3,5,6-四氯吡啶和五氯吡啶组成的第二混合物,和(b)从2,3,5,6-四氯吡啶中回收2,3,5,6-四氯吡啶 第二个混合物。 反应通常在约150℃至约300℃的温度下进行,通过将氯加压到氯化吡啶的熔融混合物中并保持这种条件直到基本上所有的异构体已经转化为对称的四氯吡啶或 五氯吡啶。

    Coated plastic substrate
    7.
    发明授权
    Coated plastic substrate 失效
    涂层塑料基材

    公开(公告)号:US5718967A

    公开(公告)日:1998-02-17

    申请号:US729101

    申请日:1996-10-11

    摘要: The present invention is a laminate which comprises: a) a plastic substrate having a surface; b) an adhesion promoter layer which is a first plasma polymerized organosilicon compound deposited on the surface of the substrate in the substantial absence of oxygen; and c) a protective coating layer which is a second plasma polymerized organosilicon compound deposited on the surface of the adhesion layer at a power density from about 10.sup.6 J/kg to about 10.sup.8 J/kg, and in the presence of a sufficient stoichiometric excess of oxygen to form a silicon polymer of SiO.sub.1.8-2.4 C.sub.0.3-1.0 and H.sub.0.7-4.0. The coating layer provides abrasion and solvent resistance for the substrate, and the adhesion promoter prevents the coating layer from peeling off the substrate. The coated plastic substrate can be used in liquid crystal display devices as an alternative to glass.

    摘要翻译: 本发明是一种层压体,其包括:a)具有表面的塑料基材; b)粘附促进剂层,其是在基本上不存在氧的情况下沉积在基材表面上的第一等离子体聚合有机硅化合物; 和c)保护性涂层,其是以约106J / kg至约108J / kg的功率密度沉积在粘附层的表面上的第二等离子体聚合的有机硅化合物,并且在足够的化学计量过量的 氧以形成SiO 1.8-2.4 C0.3-1.0和H 0.7-7.0的硅聚合物。 涂层对基材提供磨损和耐溶剂性,并且粘合促进剂防止涂层从基材上剥离。 涂覆的塑料基板可用于液晶显示装置,作为玻璃的替代品。

    Polymeric optical fiber
    8.
    发明授权
    Polymeric optical fiber 失效
    聚合光纤

    公开(公告)号:US5007706A

    公开(公告)日:1991-04-16

    申请号:US143997

    申请日:1987-10-08

    摘要: Improved polymeric optical fibers comprising a core of a copolymer prepared by anionic polymerization of alpha-methylstyrene and a monovinylidene aromatic comonomer at a temperature above 61.degree. C. and a cladding polymer are disclosed. The fibers have superior combination of high heat resistance, high flexibility, and low transmission loss in bent form.

    摘要翻译: PCT No.PCT / US87 / 00372 Sec。 371日期:1987年10月8日 102(e)日期1987年10月8日PCT 1987年2月19日PCT PCT。 出版物WO87 / 05117 日本1987年8月27日。公开了包含通过α-甲基苯乙烯和单亚乙烯基芳族共聚单体在61℃以上的阴离子聚合制备的共聚物芯和包覆聚合物的改进的聚合物光纤。 纤维具有高耐热性,高柔韧性和弯曲形式的低传输损耗的优异组合。

    Method for preparing halogenated alkanes and alkenes
    9.
    发明授权
    Method for preparing halogenated alkanes and alkenes 失效
    制备卤代烷烃和烯烃的方法

    公开(公告)号:US4105702A

    公开(公告)日:1978-08-08

    申请号:US769483

    申请日:1977-02-23

    IPC分类号: C07C17/00 C07C17/26

    摘要: A method for preparing halogenated alkanes and alkenes which comprises reacting by contacting, for 0.005 to 0.1 second at a temperature of 675.degree. C. to 850.degree. C., a halogenating agent of the formula CCl.sub.x Br.sub.4-x, wherein x is an integer from 0 to 4, with a compound of the formula R.sub.2 CH.sub.2, wherein each R is H, Cl or Br, with or without the presence of inert gases. The utilization of the above conditions prevents the formation of large amounts of undesirable tars.

    摘要翻译: 一种制备卤代烷烃和烯烃的方法,其包括在675℃至850℃的温度下接触0.005至0.1秒的式CClxBr4-x的卤化剂,其中x是0的整数 具有式R 2 CH 2的化合物,其中每个R是H,Cl或Br,在或不存在惰性气体的情况下。 利用上述条件可防止形成大量不需要的焦油。