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    • 1. 发明授权
    • Stable concentrated metal colloids and methods of making same
    • 稳定的浓缩金属胶体及其制备方法
    • US07718710B2
    • 2010-05-18
    • US11378057
    • 2006-03-17
    • Cheng ZhangSukesh ParasherMichael A. RueterBing Zhou
    • Cheng ZhangSukesh ParasherMichael A. RueterBing Zhou
    • C09K3/00B01J31/00B01J23/00
    • B01J23/40B01J13/0034B01J13/0039B01J13/0043B01J35/0013B22F1/0022B22F9/26B22F2999/00B82Y30/00B22F2201/013
    • A method for manufacturing stable concentrated colloids containing metal nanoparticles in which the colloid is stabilized by adding a base. This allows the metal particles to be formed in higher concentration without forming larger agglomerates and/or precipitating. The method of manufacturing the stable colloidal metal nanoparticles of the present invention generally includes (i) providing a solution comprising a plurality of metal atoms, (ii) providing a solution comprising a plurality of organic agent molecules, each organic agent molecule comprising at least one functional group capable of bonding to the metal atoms, (iii) reacting the metal atoms in solution with the organic agent molecules in solution to form a mixture comprising a plurality of complexed metal atoms, (iv) reducing the complexed metal atoms in the mixture using a reducing agent to form a plurality of nanoparticles, and (v) adding an amount of a base to the mixture, thereby improving the stability of the nanoparticles in the mixture. The base may be added before or after forming the nanoparticles.
    • 一种制备含有金属纳米粒子的稳定浓缩胶体的方法,其中胶体通过加入碱稳定。 这允许金属颗粒以更高的浓度形成而不形成较大的附聚物和/或沉淀。 制备本发明的稳定胶体金属纳米粒子的方法通常包括(i)提供包含多个金属原子的溶液,(ii)提供包含多个有机试剂分子的溶液,每个有机试剂分子包含至少一个 能够与金属原子键合的官能团,(iii)使溶液中的金属原子与溶液中的有机试剂分子反应,形成包含多个络合的金属原子的混合物,(iv)使用 还原剂形成多个纳米颗粒,和(v)向混合物中加入一定量的碱,从而提高混合物中纳米颗粒的稳定性。 可以在形成纳米颗粒之前或之后加入碱。
    • 5. 发明授权
    • Process for selective oxidation of organic feedstocks with hydrogen peroxide
    • 用过氧化氢选择性氧化有机原料的方法
    • US06500968B2
    • 2002-12-31
    • US09733154
    • 2000-12-08
    • Bing ZhouMichael A. Rueter
    • Bing ZhouMichael A. Rueter
    • C07D30112
    • B01J21/18B01J23/38B01J23/40B01J35/0013B01J37/0203B01J37/0211C01B15/029
    • A process for producing oxidized organic chemical products such as propylene oxide from various organic chemical feedstocks utilizing as oxidant directly produced hydrogen peroxide (H2O2) intermediate oxidizing agent. The hydrogen peroxide intermediate is directly produced from hydrogen and oxygen feeds plus a suitable solvent in a first catalytic reaction step utilizing an active supported phase-controlled noble metal catalyst at reaction conditions of 0-100° C. temperature and 300-3,000 psig pressure. An organic chemical feedstock such as propylene together with the hydrogen peroxide intermediate and solvent solution are fed into a second catalytic reactor maintained at 0-150° C. temperature and 15-1,500 psig pressure and oxidized to produce a desired crude oxidized organic product such as propylene oxide, which is purified by distillation steps and recovered from the solvent solution.
    • 使用氧化剂直接生产过氧化氢(H 2 O 2)中间体氧化剂,从各种有机化学原料生产氧化有机化学产品如环氧丙烷的方法。 在0-100℃温度和300-3000psig压力的反应条件下,使用活性支持相控制的贵金属催化剂,在第一催化反应步骤中,由氢气和氧气进料加合适的溶剂直接生产过氧化氢中间体。 将有机化学原料如丙烯与过氧化氢中间体和溶剂溶液一起进料至保持在0-150℃温度和15-1,500psig压力的第二催化反应器中,并氧化以产生所需的粗氧化有机产物,例如 环氧丙烷,其通过蒸馏步骤纯化并从溶剂溶液中回收。
    • 7. 发明授权
    • Epoxide polymerization process
    • 环氧聚合工艺
    • US6028230A
    • 2000-02-22
    • US92471
    • 1998-06-05
    • Bi Le-KhacUlrich B. HoleschovskyMichael A. Rueter
    • Bi Le-KhacUlrich B. HoleschovskyMichael A. Rueter
    • B01J27/26C08G65/10C08G65/26C07C41/03
    • C08G65/2663B01J27/26
    • The amount of high molecular weight impurity present in a polyether polyol produced by alkoxylation of an active hydrogen-containing initiator using an epoxide such as propylene oxide and a substantially amorphous highly active double metal cyanide complex catalyst may be advantageously lowered by having a non-protic Lewis acid present during the epoxide polymerization. The use of halides such as zinc chloride and aluminum chloride is especially effective for such purposes. In a preferred embodiment, minor amounts of water are also present during polymerization. The higher purity polyether polyols thereby produced are particularly useful in the preparation of slab and molded polyurethane foams, which tend to collapse or become excessively tight when elevated levels of high molecular tail are present in the polyether polyol.
    • 通过使用环氧化物如环氧丙烷和基本上无定形的高度活性的双金属氰化物配合物催化剂烷氧基化含活性氢的引发剂制备的聚醚多元醇中存在的高分子量杂质的量可有利地通过具有非质子 在环氧化物聚合期间存在路易斯酸。 使用卤化物如氯化锌和氯化铝对于这些目的特别有效。 在优选的实施方案中,在聚合期间也存在少量的水。 由此制备的较高纯度的聚醚多元醇特别可用于制备板坯和模塑聚氨酯泡沫体,当在聚醚多元醇中存在高分子量尾部时,倾向于塌缩或变得过紧。
    • 8. 发明授权
    • Propylene oxide purification
    • 环氧丙烷净化
    • US6024840A
    • 2000-02-15
    • US908604
    • 1997-08-08
    • Michael A. Rueter
    • Michael A. Rueter
    • C07D301/32C07D303/04B01D3/40C07C301/12C07C301/32
    • C07D301/32
    • Propylene oxide obtained by an epoxidation process which uses methanol as a solvent may be effectively treated to remove acetaldehyde by subjecting the crude epoxidation reaction product to fractional distillation. The methanol solvent is utilized during such distillation to lower the relative volatility of the acetaldehyde impurity, thereby making it possible to obtain a bottoms fraction containing substantially all the acetaldehyde. Purified propylene oxide having a reduced acetaldehyde concentration is removed as an overhead stream. Water may also be effectively separated from the propylene oxide using this procedure.
    • 通过使用甲醇作为溶剂的环氧化方法获得的环氧丙烷可以通过使粗环氧化反应产物进行分馏而被有效地处理以除去乙醛。 在这种蒸馏期间使用甲醇溶剂来降低乙醛杂质的相对挥发性,从而可以获得含有基本上所有乙醛的塔底馏分。 具有降低的乙醛浓度的纯化的环氧丙烷作为塔顶物流被除去。 也可以使用该方法将水与环氧丙烷有效分离。