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27 条记录 (耗时 0.012 秒)

    Method for preparing adjustably bioresorbable sol-gel derived sio2
    1.
    发明申请
    Method for preparing adjustably bioresorbable sol-gel derived sio2 审中-公开

    公开(公告)号：US20070196427A1

    公开(公告)日：2007-08-23

    申请号：US10590451

    申请日：2005-02-22

    申请人： Mika Jokinen ,  Reeta Viitala ,  Harry Jalonen

    发明人： Mika Jokinen ,  Reeta Viitala ,  Harry Jalonen

    IPC分类号： C01B33/14

    CPC分类号： A61K9/1611 ,  A61K9/0024 ,  A61K9/06 ,  A61K9/143 ,  A61K9/2009 ,  C01B33/16 ,  C01B33/163 ,  C01B33/166 ,  C03B19/1065 ,  C03B19/12 ,  C03C4/0007 ,  C03C4/0014 ,  C04B35/14 ,  C04B35/624 ,  C04B35/62605 ,  C04B35/6264 ,  C04B35/62655 ,  C04B35/63 ,  C04B2235/441

    摘要： The present invention relates to a method for preparing a sol-gel derived SiO2 with a very fast bioresorption rate wherein a sol-gel derived SiO2 is prepared from a sol comprising water, an alkoxide or inorganic silicate and a lower alcohol using a mineral acid or a base as a catalyst and said sol is aged and dried. Characteristic for the method is that pH is from 1.5 to 2.5, molar ratio of water to the alkoxide or inorganic silicate is 0.5 to 2.5, of alcohol to the alkoxide or inorganic silicate is ≧0.5; and the sol is either let to gel without induced changes of composition and without forced drying of the sol, or a change of composition are induced; and within a time of ≦30 minutes, from the induced change forced drying of the sol is carried out or initiated. The present invention also relates to a method for adjusting the bioresorption rate of sol-gel derived SiO2. Characteristic for the adjusting method is that a SiO2 with a very fast bioresorption rate is obtained according to the method referred to above; and a SiO2 with a slower bioresorption rate than the fastest bioresorption rate is obtained by deviating any of the parameters: pH, molar ratio of water to the alkoxide or inorganic silicate and/or molar ratio of alcohol to the alkoxide or inorganic silicate; carrying out induced changes by addition of a component or components and/or optional addition of the biologically active agent or agents, said changes affecting any of the values by not carrying out forced drying, or carrying out or initiating forced drying of the sol later; and/or deviating the temperature for letting the sol gel spontaneously. The invention further relates to bioresorbable sol-gel derived SiO2 obtainable by the methods of the invention and to their use in administration of biologically active agents.

    Method of preparing loosely aggregated 200-500 millimicron silica
    2.
    发明授权
    Method of preparing loosely aggregated 200-500 millimicron silica 失效
    松散聚集的200-500毫摩尔二氧化硅的方法

    公开(公告)号：US4049781A

    公开(公告)日：1977-09-20

    申请号：US612041

    申请日：1975-09-10

    申请人： Ellsworth George Acker ,  Milton Edward Winyall

    发明人： Ellsworth George Acker ,  Milton Edward Winyall

    IPC分类号： C01B33/152 ,  C01B33/16 ,  C01B33/12

    CPC分类号： C01B33/166 ,  C01B33/152

    摘要： A loosely aggregated 200-500 millimicron primary particle size silica can be produced by a silicate neutralization technique. The process consists of neutralizing an alkali metal silicate solution by addition to an ammoniated acetic acid or carbonic acid mixture. These particles are loosely aggregated to an average particle size of about 1 micron. These particles are readily deaggregated in a fluid energy mill. A very convenient technique is to dry and deaggregate in a fluid energy mill in a single step.

    摘要翻译： 松散聚集的200-500毫摩尔一次粒径的二氧化硅可以通过硅酸盐中和技术生产。 该方法包括通过加入氨化乙酸或碳酸混合物中和碱金属硅酸盐溶液。 这些颗粒松散地聚集成约1微米的平均粒度。 这些颗粒容易在流体能量磨中解聚。 一种非常方便的技术是在一个单一步骤中在流体能量磨中干燥和解聚。

    Method for producing inorganic porous material
    4.
    发明申请
    Method for producing inorganic porous material 失效
    无机多孔材料的制造方法

    公开(公告)号：US20040149654A1

    公开(公告)日：2004-08-05

    申请号：US10475004

    申请日：2003-10-16

    发明人： Ryoji Takahashi ,  Satoshi Sato ,  Akiyuki Yachi

    IPC分类号： B01D011/00

    CPC分类号： C01B33/166 ,  C01B33/16

    摘要： A process for producing an inorganic porous material, comprising the steps of preparing an aqueous medium solution containing water-glass as a silica source, a water-soluble polymer and an acid, causing phase separation and gelation in the solution at the same time to form a wet gel, and washing and drying the gel. According to the present invention, use of water-glass which is easily acquired as a silica source makes it possible to produce porous silica having mutually continuous through holes with macro-pores. According to the present invention, the diameter of each macro-pore can be controlled to a desired value.

    摘要翻译： 一种制备无机多孔材料的方法，包括以下步骤：制备含有水玻璃作为二氧化硅源的水性介质溶液，水溶性聚合物和酸，同时在溶液中引起相分离和凝胶化形成 湿凝胶，洗涤和干燥凝胶。 根据本发明，使用容易获得的水玻璃作为二氧化硅源可以制造具有相互连续的具有大孔的通孔的多孔二氧化硅。 根据本发明，可以将每个宏观孔的直径控制在期望值。

    Process for preparing polymer particles
    5.
    发明授权
    Process for preparing polymer particles 失效
    制备聚合物颗粒的方法

    公开(公告)号：US4621068A

    公开(公告)日：1986-11-04

    申请号：US734670

    申请日：1985-05-16

    申请人： Ove E. Hansen

    发明人： Ove E. Hansen

    IPC分类号： B01J13/00 ,  B01J2/00 ,  C01B33/152 ,  C01B33/16 ,  C01F7/02 ,  C01G25/00 ,  C01G25/02 ,  C08F2/32 ,  C08G85/00 ,  C12N11/14 ,  B01J35/08

    CPC分类号： C01G25/00 ,  C01B33/152 ,  C01B33/16 ,  C01B33/166 ,  C01F7/02 ,  C01G25/02 ,  C12N11/14 ,  C01P2004/32 ,  C01P2004/52

    摘要： Substantially spherical solid particles of a substantially uniform particle size are prepared by dispersing a solution of a polymerizable substance in a first liquid by means of a suitble emulsifier to form droplets of the polymerizable substance of a substantially uniform particle size, which are thereafter poured into a second liquid with which the first liquid is immiscible and which contains a sufficient amount of a reactant to polymerize the polymerizable substance. After the polymerization the substantially spherical particles formed are recovered. In a preferred embodiment, an aqueous solution of an alkaline metal silicate, especially sodium silicate, is dispersed in a coparaffinate by means of a suitable emulsifier, and the emulsion is poured into an aqueous solution of the polymerization reactant to form gelled, substantially spherical hydrated silicate particles.

    摘要翻译： 通过用适当的乳化剂将可聚合物质的溶液分散在第一液体中以形成基本均匀的粒度的可聚合物质的液滴，然后将其倒入 第二液体与第一液体不混溶并且含有足够量的反应物以聚合可聚合物质。 聚合后，回收形成的基本上球形的颗粒。 在优选的实施方案中，将碱金属硅酸盐，特别是硅酸钠的水溶液通过合适的乳化剂分散在聚苯乙烯中，将乳液倒入聚合反应物的水溶液中以形成凝胶状，基本上为水合的 硅酸盐颗粒。

    METHOD FOR PREPARING HYDROPHOBIC SILICA AEROGEL
    10.
    发明申请
    METHOD FOR PREPARING HYDROPHOBIC SILICA AEROGEL 有权
    制备疏水性二氧化硅气球的方法

    公开(公告)号：US20160280557A1

    公开(公告)日：2016-09-29

    申请号：US14653189

    申请日：2015-02-04

    申请人： LG CHEM, LTD.

    发明人： Mi Ri KIM ,  Kyoung Shill OH ,  Ye Hon Klm ,  Dong Hyun CHO ,  Young Sam klm

    IPC分类号： C01B33/158

    CPC分类号： C01B33/1585 ,  B01J13/0091 ,  C01B33/163 ,  C01B33/166 ,  C01P2006/11 ,  C01P2006/12 ,  C01P2006/14 ,  C01P2006/16 ,  C01P2006/17

    摘要： Provided are a method for preparing a hydrophobic silica aerogel by the combined use of a first surface modifier and a second surface modifier, and a hydrophobic silica aerogel prepared by using the method. A hydrophobic silica aerogel having excellent physical properties and pore characteristics as well as a high degree of hydrophobicity may be prepared with high efficiency by the preparation method according to the present invention.

    摘要翻译： 提供了通过组合使用第一表面改性剂和第二表面改性剂以及通过使用该方法制备的疏水性二氧化硅气凝胶来制备疏水性二氧化硅气凝胶的方法。 通过本发明的制备方法，可以高效地制备具有优异物理性能和孔特性以及高疏水性的疏水性二氧化硅气凝胶。