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1.发明授权公开(公告)号：US07829119B2
公开(公告)日：2010-11-09
申请号：US10969391
申请日：2004-10-20
申请人： Rohit K. Rana , Vinit S. Murthy , Michael S. Wong
发明人： Rohit K. Rana , Vinit S. Murthy , Michael S. Wong
摘要： A method for making hollow nanoparticles, comprises a) providing an amount of a polyelectrolyte having a charge, b) providing an amount of a counterion having a valence of at least 2, c) combining the polyelectrolyte and the counterion in a solution such that the polyelectrolyte self-assembles to form spherical aggregates, and d) adding nanoparticles to the solution such that nanoparticles arrange themselves around the spherical aggregates. The polyelectrolyte may have a positive or negative charge. The charge ratio R of total charge of the counterions to the total charge of the polyelectrolyte is greater than 1.0.
摘要翻译： 一种制备中空纳米颗粒的方法，包括a）提供一定量的具有电荷的聚电解质，b）提供一定量的具有至少2价的抗衡离子，c）将溶液中的聚电解质和抗衡离子组合，使得 聚电解质自组装形成球形聚集体，以及d）向溶液中加入纳米颗粒，使得纳米颗粒自身围绕球形聚集体排列。 聚电解质可能具有正电荷或负电荷。 抗衡离子的总电荷与聚电解质的总电荷的电荷比R大于1.0。
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公开(公告)号：US20100267594A1
公开(公告)日：2010-10-21
申请号：US11993120
申请日：2006-06-26
CPC分类号： C09K8/706 , A61K8/11 , A61K2800/412 , A61K2800/413 , A61Q19/00 , B01J13/02 , B82Y5/00 , C09K2208/10 , C12N9/96 , C12N11/04
摘要： A method for the encapsulation and triggered-release of water-soluble or water-dispersible materials. The method comprises a) providing an amount of electrolyte having a charge, b) providing an amount of counterion having a valence of at least 2, c) combining the polyelectrolyte and the counterion in a solution such that the polyelectrolyte self-assembles to form aggregates, d) adding a compound to be encapsulated, and e) adding nanoparticles to the solution such that nanoparticles arrange themselves around the aggregates. Release of the encapsulated species is triggered by disassembly or deformation of the microcapsules though disruption of the charge interactions. This method is specifically useful for the controlled viscosity reduction of the fracturing fluids commonly utilized in the oil field.
摘要翻译： 一种水溶性或水分散性材料的包封和触发释放方法。 该方法包括a）提供一定量的具有电荷的电解质，b）提供一定量的具有至少2价的抗衡离子，c）将溶液中的聚电解质和抗衡离子组合，使得聚电解质自组装形成聚集体 ，d）加入待包封的化合物，和e）向该溶液中加入纳米颗粒使得纳米颗粒自身围绕聚集体排列。 封装的物质的释放通过微胶囊的拆卸或变形而触发，尽管电荷相互作用被破坏。 该方法特别适用于通常用于油田的压裂液的受控粘度降低。
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3.发明申请公开(公告)号：US20100222501A1
公开(公告)日：2010-09-02
申请号：US11464034
申请日：2006-08-11
IPC分类号： C08L83/04
摘要： A method for making composite nanoparticles comprises a) providing an amount of a polyelectrolyte having a charge, b) providing an amount of a counterion having a valence of at least 2, the counterion having a charge opposite the charge of the polyelectrolyte, c) combining the polyelectrolyte and the counterion in a solution such that the polyelectrolyte self-assembles to form a plurality of polymer aggregates, the plurality of polymer aggregates having an average diameter less than about 100 nm, d) adding a precursor to the solution, wherein the precursor has a charge opposite the charge of the polyelectrolyte, and e) allowing the precursor to infuse each polymer aggregate and polymerize so as to produce composite nanoparticles. The composite nanoparticles comprise a polymer aggregate containing at least one polyelectrolyte and at least one counterion and a polymer network crosslinked throughout the polymer aggregate. The polymer network may be inorganic, e.g silicon-containing.
摘要翻译： 制备复合纳米颗粒的方法包括：a）提供一定量的具有电荷的聚电解质，b）提供一定量的具有至少2价的抗衡离子，所述抗衡离子具有与聚电解质的电荷相反的电荷，c）组合 聚电解质和抗衡离子，使得聚电解质自组装形成多个聚合物聚集体，所述多个聚合物聚集体具有小于约100nm的平均直径，d）向溶液中加入前体，其中前体 具有与聚电解质的电荷相反的电荷，以及e）允许前体注入每个聚合物聚集体并聚合以产生复合纳米颗粒。 复合纳米颗粒包含含有至少一种聚电解质和至少一种抗衡离子的聚合物聚合物和在整个聚合物聚集体中交联的聚合物网络。 聚合物网络可以是无机的，例如含硅的。
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公开(公告)号：US08007829B2
公开(公告)日：2011-08-30
申请号：US11335328
申请日：2006-01-19
申请人： Vinit S. Murthy , Michael S. Wong
发明人： Vinit S. Murthy , Michael S. Wong
IPC分类号： A61K9/14
CPC分类号： B01J13/10 , B01J13/02 , B01J13/22 , B82Y30/00 , Y10T428/2982 , Y10T428/2991 , Y10T428/2993 , Y10T428/2998
摘要： A method for making inhomogeneous microparticles comprises a) providing an amount of each of at least two polyelectrolytes having a charge, b) providing an amount of a counterion having a valence of at least 2, c) combining the polyelectrolytes and the counterion in a solution such that the polyelectrolyte self-assembles to form inhomogeneous aggregates, and d) adding nanoparticles to the solution such that nanoparticles arrange themselves around the inhomogeneous aggregates to form inhomogeneous particles. The polyelectrolyte may have a positive or negative charge. The charge ratio R of total charge of the counterions to the total charge of the polyelectrolyte may be greater than 1.0.
摘要翻译： 制备不均匀微粒的方法包括：a）提供一定量的至少两种具有电荷的聚电解质，b）提供一定量的具有至少2价的抗衡离子，c）将溶液中的聚电解质和抗衡离子结合在溶液中 使得聚电解质自组装以形成不均匀的聚集体，以及d）向溶液中加入纳米颗粒，使得纳米颗粒将其自身排列在不均匀的聚集体周围以形成不均匀的颗粒。 聚电解质可能具有正电荷或负电荷。 抗衡离子的总电荷与聚电解质的总电荷的电荷比R可以大于1.0。
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