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    • 15. 发明申请
    • FUNCTIONALIZATION OF CARBON NANOSPHERES BY SEVERE OXIDATIVE TREATMENT
    • 通过严格氧化处理对碳纳米管的功能化
    • WO2009088544A2
    • 2009-07-16
    • PCT/US2008/079403
    • 2008-10-09
    • HEADWATERS TECHNOLOGY INNOVATION, LLCZHANG, ChengZHOU, Bing
    • ZHANG, ChengZHOU, Bing
    • D02G3/02C01B31/00B01J19/10C08K3/04
    • B82Y40/00B82Y30/00C01B32/05C01B32/18Y10T428/2918
    • Carbon nanostructures are formed from a carbon precursor and catalytic templating nanoparticles and are treated with a severe oxidative agent to introduce oxygen-containing functional groups to the surface of the graphitic material. Methods for manufacturing carbon nanostructures generally include (1) forming a precursor mixture that includes a carbon precursor and a plurality of catalytic templating particles, (2) carbonizing the precursor mixture to form an intermediate carbon material including carbon nanostructures, amorphous carbon, and catalytic metal, (3) purifying the intermediate carbon material by removing at least a portion of the amorphous carbon and optionally at least a portion of the catalytic metal, and (4) treating the intermediate carbon material with a severe oxidative treatment to increase surface functionalization. Examples of oxidative treatments include (i) a mixture of nitric acid and sulfuric acid, (ii) a solution of hydrogen peroxide, or (iii) a mixture of sulfuric acid and hydrogen peroxide.
    • 碳纳米结构由碳前体和催化模板纳米颗粒形成,并用严重的氧化剂处理以将含氧官能团引入石墨材料的表面。 制造碳纳米结构的方法通常包括(1)形成包含碳前体和多个催化模板颗粒的前体混合物,(2)将前体混合物碳化以形成包括碳纳米结构,无定形碳和催化金属的中间碳材料 (3)通过除去至少一部分无定形碳和任选的至少一部分催化金属来纯化中间碳材料,和(4)用严格的氧化处理来处理中间碳材料以增加表面官能度。 氧化处理的实例包括(i)硝酸和硫酸的混合物,(ii)过氧化氢溶液,或(iii)硫酸和过氧化氢的混合物。
    • 18. 发明申请
    • METHODS FOR MANUFACTURING ARY-ARYL COUPLED POLYMERS
    • 制备芳族 - 芳族偶联聚合物的方法
    • WO2008016956A2
    • 2008-02-07
    • PCT/US2007/074922
    • 2007-08-01
    • HEADWATERS TECHNOLOGY INNOVATION LLCLIU, ChangkunZHOU, Bing
    • LIU, ChangkunZHOU, Bing
    • C08G79/02
    • C08G61/12C08G61/02C08G61/123C08G61/126C08G2261/124C08G2261/3142C08G2261/3162C08G2261/3223C08G2261/3243C08G2261/3246H01L51/0039H01L51/0043
    • Aryl-aryl coupled polymers are manufactured using a water-soluble noble metal catalyst. The hydrophilicity of the catalyst facilitates the separation of the catalyst from the polymer product. The method can be generally carried out by preparing a reaction medium comprising an aqueous phase and an organic phase. A water-soluble noble metal catalyst is dispersed in the aqueous phase. A base is also dispersed in the aqueous phase. An aryl-aryl coupled polymer is formed in the reaction medium by (i) adding at least one polymerizable monomer to the reaction mixture; and (ii) mixing the aqueous phase with the organic phase to cause polymerization of the monomer through an aryl-aryl coupling reaction. The polymer has a greater solubility in the organic phase than the aqueous phase. Allowing the organic phase to separate from the aqueous phase separates the water soluble catalyst from the polymer. The reaction can be used to manufacture high molecular weight polymers (e.g., at least 10,000 g/mole) with low quantities of residual metal (e.g., less than 20 ppm).
    • 使用水溶性贵金属催化剂制造芳基 - 芳基偶联聚合物。 催化剂的亲水性有利于催化剂与聚合物产物的分离。 该方法通常可以通过制备包含水相和有机相的反应介质来进行。 水溶性贵金属催化剂分散在水相中。 碱也分散在水相中。 通过(i)将至少一种可聚合单体加入到反应混合物中,在反应介质中形成芳基 - 芳基偶联聚合物; 和(ii)将水相与有机相混合以引起单体通过芳基 - 芳基偶联反应进行聚合。 聚合物在有机相中的溶解度高于水相。 让有机相与水相分离,将水溶性催化剂从聚合物中分离出来。 该反应可用于制备具有低量残余金属(例如小于20ppm)的高分子量聚合物(例如至少10,000克/摩尔)。