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    • 2. 发明申请
    • STABLE CONCENTRATED METAL COLLOIDS AND METHODS OF MAKING SAME
    • 稳定的浓缩金属胶体及其制备方法
    • WO2007109457A2
    • 2007-09-27
    • PCT/US2007063874
    • 2007-03-13
    • HEADWATERS TECH INNOVATION LLCPARASHER SUKESHZHANG CHENGRUETER MICHAEL AZHOU BING
    • PARASHER SUKESHZHANG CHENGRUETER MICHAEL AZHOU BING
    • B01J31/00B01F3/12B01F17/00
    • 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. 发明申请
    • MULTICOMPONENT NANOPARTICLES FORMED USING A DISPERSING AGENT
    • 用分散剂形成多组分纳米粒子
    • WO2007001418A2
    • 2007-01-04
    • PCT/US2005037545
    • 2005-10-19
    • HEADWATERS NANOKINETIX INCZHOU BINGPARASHER SUKESHRUETER MICHAEL
    • ZHOU BINGPARASHER SUKESHRUETER MICHAEL
    • B01J23/00
    • B01J35/0013B01J21/18B01J23/8906B01J23/8933B01J23/8946B01J35/006B01J37/0203B01J37/18B82Y30/00B82Y40/00
    • Nanoparticles include a plurality of two or more dissimilar components selected from the group of noble metals, base transition metals, alkali earth metals, and rare earth metals and/or different groups of the periodic table of elements. The two or more dissimilar components are dispersed using a dispersing agent such that the nanoparticles have a substantially uniform distribution of the two or more dissimilar components. The dispersing agents can be poly functional small organic molecules, polymers, or oligomers, or salts of these. The molecules of the dispersing agent bind to the particle atoms to overcome same-component attractions, thereby allowing dissimilar components to form heterogeneous manoparticles. Dissimular components such as iron and platinum can be complexed using the dispersing agent to form sbstantially uniform heterogeneous nanoparticles. The nanoparticles can be used alone or applied to a support. At least a portion of the dispersing agent can be removed by reduction and/or oxidation.
    • 纳米颗粒包括多种选自贵金属,碱过渡金属,碱土金属和稀土金属和/或元素周期表的不同基团的两种或更多种不同组分。 使用分散剂分散两种或更多种不同组分,使得纳米粒子具有两种或更多种不同组分的基本均匀分布。 分散剂可以是多官能小有机分子,聚合物或低聚物或这些的盐。 分散剂的分子与粒子原子结合以克服相同成分的吸引力,由此允许不相似的组分形成不均匀的人造粒子。 可以使用分散剂使异物组分如铁和铂复合以形成基本均匀的非均相纳米粒子。 纳米颗粒可以单独使用或应用于支持物。 至少一部分分散剂可以通过还原和/或氧化除去。