Process of preparing para phenylamines
    3.
    发明授权
    Process of preparing para phenylamines 失效
    对苯胺的制备方法

    公开(公告)号:US5420354A

    公开(公告)日:1995-05-30

    申请号:US318928

    申请日:1994-10-06

    IPC分类号: C07C209/36

    CPC分类号: C07C209/36

    摘要: A process of preparing para phenylenediamines, such as, p-aminodiphenylamine. The process involves contacting nitrobenzene or a substituted derivative thereof with hydrogen and an amine, such as aniline, in the presence of a hydrogenation catalyst, a hydrogenation inhibitor, and an acid cocatalyst under reaction conditions.

    摘要翻译: 对苯二胺的制备方法,如对氨基二苯胺。 该方法包括在反应条件下,在氢化催化剂,氢化抑制剂和酸性助催化剂的存在下,将硝基苯或其取代的衍生物与氢气和胺如苯胺接触。

    REACTION INJECTION MOLDING SYSTEM AND PROCESSES FOR PRODUCING POLYURETHANE ARTICLES
    4.
    发明申请
    REACTION INJECTION MOLDING SYSTEM AND PROCESSES FOR PRODUCING POLYURETHANE ARTICLES 审中-公开
    反应注射成型体系及制备聚氨酯制品的方法

    公开(公告)号:US20090309266A1

    公开(公告)日:2009-12-17

    申请号:US12139036

    申请日:2008-06-13

    IPC分类号: B29C45/00

    CPC分类号: B29C67/246 B29K2075/00

    摘要: An externally heated reaction injection molding (“RIM”) system and processes for producing polyurethane articles. The system comprises a mixing chamber for combining a prepolymer and a chain extender and one or more heating systems for heating at least one of the prepolymer and the chain extender upstream of the mixing chamber. In one embodiment, the process comprises injecting a heated prepolymer and/or a heated chain extender into a mixing chamber and initiating a curing of the prepolymer in a mixing chamber. By employing heat to decrease the viscosity of the prepolymer and/or the chain extender, prepolymers and/or chain extenders that have high room temperature viscosities or are in the solid state at room temperature, may be utilized in the RIM system.

    摘要翻译: 外部加热反应注射成型(“RIM”)系统和聚氨酯制品的制造方法。 该系统包括用于将预聚物和扩链剂组合的混合室和用于在混合室上游加热至少一种预聚物和扩链剂的加热系统。 在一个实施方案中,该方法包括将加热的预聚物和/或加热的扩链剂注入混合室中,并在混合室中引发预聚物的固化。 通过使用热量来降低预聚物和/或扩链剂的粘度,可以在RIM系统中使用具有高室温粘度或在室温下处于固态的预聚物和/或扩链剂。

    Tire tread composition
    5.
    发明授权
    Tire tread composition 失效
    轮胎胎面组成

    公开(公告)号:US5569697A

    公开(公告)日:1996-10-29

    申请号:US437260

    申请日:1995-05-08

    摘要: Tire tread compositions comprisinga) a first rubber component comprising about 60-90 parts of styrene butadiene rubber (SBR) comprising less than 20 percent by weight of styrene, per hundred parts of rubber (phr);b) a second rubber component comprising about 10-40 phr of nitrile-butadiene rubber (NBR);c) 30-80 phr of carbon black;d) 10-20 phr of silica;e) 1-3 phr of a silane coupling agent; and, optionally,f) a third rubber component comprising about 10-30 phr of a high cis polybutadiene rubber (cis BR). The tire tread compositions provide tires with excellent wet traction and low rolling resistance.

    摘要翻译: 轮胎胎面组合物,其包含a)第一橡胶组分,其包含约60-90份包含少于20重量%苯乙烯的苯乙烯丁苯橡胶(SBR),每百份橡胶(phr); b)包含约10-40phr丁腈橡胶(NBR)的第二橡胶组分; c)30-80phr的炭黑; d)10-20phr二氧化硅; e)1-3phr硅烷偶联剂; 和任选地,f)包含约10-30phr的高顺式聚丁二烯橡胶(顺式BR)的第三橡胶组分。 轮胎胎面组合物提供具有优异的湿牵引力和低滚动阻力的轮胎。

    Process of preparing para substituted phenylamines
    6.
    发明授权
    Process of preparing para substituted phenylamines 失效
    制备对位取代的苯胺的方法

    公开(公告)号:US5574187A

    公开(公告)日:1996-11-12

    申请号:US318927

    申请日:1994-10-06

    IPC分类号: C07C209/68 C07C209/02

    CPC分类号: C07C209/68

    摘要: Processes of preparing para substituted phenylamines, such as, p-phenylenediamines, and particularly, p-aminodiphenylamine. One process involves contacting phenylhydroxylamine with a nucleophilic reagent, such as aniline, in specified proportions and within a specified temperature range, in the absence of oxygen, and in the presence of a homogeneous acid catalyst, such as hydrochloric acid. A second process involves contacting phenylhydroxylamine with a nucleophilic reagent, such as aniline, in the presence of a solid acid catalyst, such as acidic zeolite Y, under reaction conditions.

    摘要翻译: 制备对位取代的苯胺的方法,如对苯二胺,特别是对氨基二苯胺。 一个方法包括在不存在氧的情况下,在均相酸催化剂如盐酸的存在下,以规定的比例和规定的温度范围内将苯基羟胺与亲核试剂如苯胺接触。 第二个过程包括在反应条件下,在固体酸催化剂如酸性沸石Y的存在下使苯基羟胺与亲核试剂如苯胺接触。