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    METHOD OF MAKING POROUS PARTICLES
    141.
    发明申请
    METHOD OF MAKING POROUS PARTICLES 有权
    制造多孔颗粒的方法

    公开(公告)号：US20080268367A1

    公开(公告)日：2008-10-30

    申请号：US11739121

    申请日：2007-04-24

    Applicant: Mridula Nair ,  Xiqiang Yang ,  Tamara K. Jones ,  James G. Popowych

    Inventor： Mridula Nair ,  Xiqiang Yang ,  Tamara K. Jones ,  James G. Popowych

    IPC: G03G5/00

    CPC classification number: C08J3/14 ,  C08J9/28 ,  C08J2201/05 ,  G03G9/0806 ,  G03G9/0827

    Abstract: The present invention is a method for the preparation of porous particles that includes dissolving a polymer material in a first organic solvent and adding a second organic solvent and nonionic organic polymer particles to form an organic phase. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer to form a dispersion and the dispersion is homogenized. The first and second organic solvents are evaporated and the product is recovered.

    Abstract translation: 本发明是一种制备多孔颗粒的方法，其包括将聚合物材料溶解在第一有机溶剂中并加入第二有机溶剂和非离子有机聚合物颗粒以形成有机相。 将有机相分散在包含微粒稳定剂的水相中以形成分散体，并将分散体均化。 将第一和第二有机溶剂蒸发并回收产物。

    Preparation of hydrophobic organic aeorgels
    142.
    发明授权
    Preparation of hydrophobic organic aeorgels 失效
    疏水性有机物的制备

    公开(公告)号：US07291653B2

    公开(公告)日：2007-11-06

    申请号：US10927679

    申请日：2004-08-26

    Applicant: Theodore F. Baumann ,  Joe H. Satcher, Jr. ,  Alexander E. Gash

    Inventor： Theodore F. Baumann ,  Joe H. Satcher, Jr. ,  Alexander E. Gash

    IPC: C08J9/28

    CPC classification number: C08J9/28 ,  C08J2201/05 ,  C08J2203/08 ,  C08J2361/02 ,  Y02P20/544

    Abstract: Synthetic methods for the preparation of hydrophobic organics aerogels. One method involves the sol-gel polymerization of 1,3-dimethoxybenzene or 1,3,5-trimethoxybenzene with formaldehyde in non-aqueous solvents. Using a procedure analogous to the preparation of resorcinol-formaldehyde (RF) aerogels, this approach generates wet gels that can be dried using either supercritical solvent extraction to generate the new organic aerogels or air dried to produce an xerogel. Other methods involve the sol-gel polymerization of 1,3,5 trihydroxy benzene (phloroglucinol) or 1,3 dihydroxy benzene (resorcinol) and various aldehydes in non-aqueous solvents. These methods use a procedure analogous to the one-step base and two-step base/acid catalyzed polycondensation of phloroglucinol and formaldehyde, but the base catalyst used is triethylamine. These methods can be applied to a variety of other sol-gel precursors and solvent systems. These hydrophobic organics aerogels have numerous application potentials in the field of material absorbers and water-proof insulation.

    Abstract translation: 制备疏水性有机物气凝胶的合成方法。 一种方法涉及1,3-二甲氧基苯或1,3,5-三甲氧基苯与甲醛在非水溶剂中的溶胶 - 凝胶聚合。 使用类似于间苯二酚 - 甲醛（RF）气凝胶的制备方法，该方法产生湿凝胶，其可以使用超临界溶剂萃取干燥以产生新的有机气凝胶或空气干燥以产生干凝胶。 其他方法涉及在非水溶剂中1,3,5-三羟基苯（间苯三酚）或1,3-二羟基苯（间苯二酚）和各种醛的溶胶 - 凝胶聚合。 这些方法使用类似于间苯三酚和甲醛的一步碱和两步碱/酸催化缩聚的方法，但所用的碱催化剂是三乙胺。 这些方法可以应用于各种其他溶胶 - 凝胶前体和溶剂体系。 这些疏水性有机气凝胶在材料吸收体和防水绝缘领域具有许多应用潜力。

    Preparation of hydrophobic organic aeorgels
    143.
    发明申请
    Preparation of hydrophobic organic aeorgels 失效
    疏水性有机气凝胶的制备

    公开(公告)号：US20050027027A1

    公开(公告)日：2005-02-03

    申请号：US10927679

    申请日：2004-08-26

    Applicant: Theodore Baumann ,  Joe Satcher ,  Alexander Gash

    Inventor： Theodore Baumann ,  Joe Satcher ,  Alexander Gash

    IPC: C08J9/28 ,  C08J9/26

    CPC classification number: C08J9/28 ,  C08J2201/05 ,  C08J2203/08 ,  C08J2361/02 ,  Y02P20/544

    Abstract: Synthetic methods for the preparation of hydrophobic organics aerogels. One method involves the sol-gel polymerization of 1,3-dimethoxybenzene or 1,3,5-trimethoxybenzene with formaldehyde in non-aqueous solvents. Using a procedure analogous to the preparation of resorcinol-formaldehyde (RF) aerogels, this approach generates wet gels that can be dried using either supercritical solvent extraction to generate the new organic aerogels or air dried to produce an xerogel. Other methods involve the sol-gel polymerization of 1,3,5 trihydroxy benzene (phloroglucinol) or 1,3 dihydroxy benzene (resorcinol) and various aldehydes in non-aqueous solvents. These methods use a procedure analogous to the one-step base and two-step base/acid catalyzed polycondensation of phloroglucinol and formaldehyde, but the base catalyst used is triethylamine. These methods can be applied to a variety of other sol-gel precursors and solvent systems. These hydrophobic organics aerogels have numerous application potentials in the field of material absorbers and water-proof insulation.

    Abstract translation: 制备疏水性有机物气凝胶的合成方法。 一种方法涉及1,3-二甲氧基苯或1,3,5-三甲氧基苯与甲醛在非水溶剂中的溶胶 - 凝胶聚合。 使用类似于间苯二酚 - 甲醛（RF）气凝胶的制备方法，该方法产生湿凝胶，其可以使用超临界溶剂萃取干燥以产生新的有机气凝胶或空气干燥以产生干凝胶。 其他方法涉及在非水溶剂中1,3,5-三羟基苯（间苯三酚）或1,3-二羟基苯（间苯二酚）和各种醛的溶胶 - 凝胶聚合。 这些方法使用类似于间苯三酚和甲醛的一步碱和两步碱/酸催化缩聚的方法，但所用的碱催化剂是三乙胺。 这些方法可以应用于各种其他溶胶 - 凝胶前体和溶剂体系。 这些疏水性有机气凝胶在材料吸收体和防水绝缘领域具有许多应用潜力。

    Microcellular foams
    148.
    发明授权
    Microcellular foams 失效
    微孔泡沫

    公开(公告)号：US5128382A

    公开(公告)日：1992-07-07

    申请号：US794124

    申请日：1991-11-15

    Applicant: Jarrell R. Elliott, Jr. ,  Gokul Srinivasan ,  Manish Dhanuka ,  Ranjan Akhaury

    Inventor： Jarrell R. Elliott, Jr. ,  Gokul Srinivasan ,  Manish Dhanuka ,  Ranjan Akhaury

    IPC: C08J9/28

    CPC classification number: C08J9/28 ,  C08J2201/05 ,  C08J2201/0544

    Abstract: Supercritical drying has distinct advantages in generating microcellular materials. The dimensional stability of the polymer is not affected on drying because the supercritical process does not go through the two phase path and therefore the effect of capillary forces is absent. This helps in maintaining the morphology of the final polymer structure and better control over cell size.Organic microcellular foams were prepared by polymerizing directly in a near-critical fluid and pursuing the supercritical drying in the same reactor. The critical variables are the choice of a diluent with a strong enough solvent power to stabilize the polymer matrix, but with a low enough critical temperature to permit critical point drying without damage to the polymer matrix.

    Abstract translation: 超临界干燥在产生微孔材料方面具有明显的优势。 聚合物的尺寸稳定性不受干燥影响，因为超临界过程不经过两相路径，因此不存在毛细管作用。 这有助于维持最终聚合物结构的形态并更好地控制细胞的大小。 通过在近临界流体中直接聚合并在同一反应器中进行超临界干燥来制备有机微孔泡沫。 关键变量是选择具有足够强的溶剂能力的稀释剂以稳定聚合物基质，但具有足够低的临界温度以允许临界点干燥而不损坏聚合物基质。

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