中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

318 records (took 0.018 seconds)

    Preparation of hydrophobic organic aeorgels
    121.
    发明申请
    Preparation of hydrophobic organic aeorgels 失效
    疏水性有机物的制备

    公开(公告)号：US20020173554A1

    公开(公告)日：2002-11-21

    申请号：US10132893

    申请日：2002-04-24

    Applicant: The Regents of the University of California

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

    IPC: C09K003/00

    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。

    Microporous polymeric foams made with silicon or germanium based monomers
    123.
    发明授权
    Microporous polymeric foams made with silicon or germanium based monomers 失效
    用硅或锗基单体制成的微孔聚合物泡沫

    公开(公告)号：US6136874A

    公开(公告)日：2000-10-24

    申请号：US331990

    申请日：1999-06-30

    Applicant: John Collins Dyer ,  Herbert Louis Retzsch

    Inventor： John Collins Dyer ,  Herbert Louis Retzsch

    IPC: A61L15/24 ,  A61L15/42 ,  C08F2/32 ,  C08F246/00 ,  C08J9/28

    CPC classification number: A61L15/24 ,  A61L15/425 ,  C08F2/32 ,  C08J9/283 ,  C08J2201/05 ,  C08J2343/00

    Abstract: Disclosed are polymeric foam materials obtained using monomers based on silicon and/or germination. The copolymerization of silicon- or germanium-based monomers provide foams that have low glass transition temperatures and low densities. These foams also exhibit relatively high yield stress values, which make the foams suitable for absorption of fluids, particularly aqueous fluids such as urine and menses (when the foams are rendered hydrophilic). The foams have a variety of other uses, including insulation applications.

    Abstract translation: PCT No.PCT / US97 / 22939 Sec。 371日期1999年6月30日第 102（e）日期1999年6月30日PCT 1997年12月5日PCT公布。 第WO98 / 29486号公报 日期1998年7月9日公开是使用基于硅和/或萌发的单体获得的聚合物泡沫材料。 硅或锗基单体的共聚提供具有低玻璃化转变温度和低密度的泡沫。 这些泡沫体也呈现相当高的屈服应力值，这使得泡沫适合吸收流体，特别是含水流体如尿液和月经（当泡沫变得亲水时）。 泡沫具有各种其他用途，包括绝缘应用。

    Porous material and its preparation
    124.
    发明授权
    Porous material and its preparation 失效
    多孔材料及其制备

    公开(公告)号：US4985468A

    公开(公告)日：1991-01-15

    申请号：US185671

    申请日：1988-04-25

    Applicant: Alfred R. Elmes ,  Kevin Hammond ,  David C. Sherrington

    Inventor： Alfred R. Elmes ,  Kevin Hammond ,  David C. Sherrington

    IPC: B01J20/285 ,  B01D15/08 ,  B01J13/02 ,  B01J20/28 ,  B01J20/281 ,  B01J47/00 ,  C07K1/04 ,  C07K1/113 ,  C07K1/16 ,  C08J9/28 ,  G01N30/52 ,  G01N30/88

    CPC classification number: C08J9/28 ,  C08J2201/05

    Abstract: A porous polymeric material has cell sizes within the range 100 to 0.5 .mu.m and total pore volume with respect to the overall volume of the material in the range 75 to 98% and includes cross-linked polycondensation polymeric material. The material can be made from a high internal phase emulsion in which the cross-linked polycondensation polymer is formed in the continuous phase. The materials are preferably open interconnected cellular structures. They can be made of a wide range of polycondensation materials. The materials are thus highly porous and light weight and have a range of properties depending primarily on their constituent polycondensation materials.

    Abstract translation: 多孔聚合物材料具有在100至0.5μm范围内的孔尺寸和相对于75至98％范围内的材料的总体积的总孔体积并且包括交联的缩聚聚合物材料。 该材料可以由连续相中形成交联缩聚聚合物的高内相乳液制成。 材料优选是开放的互连的细胞结构。 它们可以由各种缩聚材料制成。 因此，这些材料是高度多孔的和重量轻的并且具有一定程度的性能，主要取决于它们的构成缩聚材料。

    Opaque, microcellular films from latex compositions, process and composition for preparing the same
    126.
    发明授权
    Opaque, microcellular films from latex compositions, process and composition for preparing the same 失效
    来自胶乳组合物的不透明的微孔膜，其制备方法和组合物

    公开(公告)号：US3951899A

    公开(公告)日：1976-04-20

    申请号：US151735

    申请日：1971-06-10

    Applicant: Jerome A. Seiner

    Inventor： Jerome A. Seiner

    IPC: C08J9/28 ,  C09D5/02 ,  C09D157/00 ,  C08L9/10 ,  C08L13/02

    CPC classification number: C09D5/02 ,  C08J9/28 ,  C09D157/00 ,  C08J2201/048 ,  C08J2201/05 ,  C08J2201/0546

    Abstract: The disclosed invention relates to films from a novel latex mixture which are non-porous, microcellular and opaque in the absence of an opacifying agent. The preparation of the films of the disclosed invention comprises providing control techniques for entrapping a sufficient amount of a liquid non-solvent for the polymer in the polymer matrix of a latex after the continuous phase removal, so that upon evaporation of the non-solvent from a coalesced and tack-free polymer matrix, a resulting opaque and continuous, non-porous film is produced which will have minute, discrete and substantially closed voids and which is opaque in the absence of an opacifying agent such as pigment.The disclosed invention also relates to opaque films with enhanced optical properties produced by the inclusion of pigments, fluorescent materials and optical brighteners in the opaque films in such a manner as to maximize their effectiveness therein.

    Abstract translation: 所公开的发明涉及在不存在不透明剂的情况下来自无孔，微孔和不透明的新型胶乳混合物的膜。 所公开的发明的膜的制备包括提供控制技术，用于在连续除去之后将聚合物的足够量的液体非溶剂包封在胶乳的聚合物基质中，使得当非溶剂从 产生聚结和无粘性的聚合物基质，产生不透明和连续的非多孔膜，其将具有微小的，离散的和基本上闭合的空隙，并且在不存在不透明剂如颜料的情况下是不透明的。

Patent Agency Ranking