中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

46 records (took 0.027 seconds)

    Low-density microcellular foam and method of making same
    21.
    发明授权
    Low-density microcellular foam and method of making same 失效
    低密度微孔泡沫及其制备方法

    公开(公告)号：US4012265A

    公开(公告)日：1977-03-15

    申请号：US609641

    申请日：1975-09-02

    Applicant: James A. Rinde

    Inventor： James A. Rinde

    IPC: C08J9/00 ,  C08J9/28 ,  C08L1/12

    CPC classification number: C08J9/28 ,  C08J9/00 ,  C08J2201/048 ,  C08J2201/054 ,  C08J2301/12 ,  Y10S376/916

    Abstract: Low-density microcellular foam having a cell size of not greater than 2 .mu.m and method of making by dissolving cellulose acetate in an acetone-based solvent, gelling the solution in a water bath maintained at 0.degree.-10.degree. C for a selected period of time to allow impurities to diffuse out, freezing the gel, and then freeze-drying wherein water and solvents sublime and the gel structure solidifies into low-density microcellular foam. The foam has a density of 0.065 to 0.6.times.10.sup.3 kg/m.sup.3 and cell size of about 0.3 to 2 .mu.m. The small cell size foam is particularly applicable for encapsulation of laser targets.

    Abstract translation: 细胞尺寸不大于2μm的低密度微孔泡沫体和通过将乙酸纤维素溶解在丙酮类溶剂中制备的方法，将溶液凝胶保持在0-10℃的水浴中选定的时间 的时间以允许杂质扩散出来，冷凝凝胶，然后冷冻干燥，其中水和溶剂升华，凝胶结构固化成低密度微孔泡沫。 泡沫体的密度为0.065〜0.6×10 3 kg / m 3，电池尺寸为0.3〜2μm左右。 小泡沫泡沫特别适用于激光靶材的封装。

    PROCESS FOR PREPARING A POROUS LAYER
    24.
    发明申请
    PROCESS FOR PREPARING A POROUS LAYER 审中-公开
    制备多孔层的方法

    公开(公告)号：US20150240046A1

    公开(公告)日：2015-08-27

    申请号：US14423150

    申请日：2013-09-26

    Applicant: Sofradim Production

    Inventor： Sébastien Ladet ,  Nicolas Prost

    IPC: C08J9/28 ,  A61L31/14 ,  A61L31/04

    CPC classification number: C08J9/28 ,  A61L27/20 ,  A61L31/042 ,  A61L31/146 ,  A61L2400/18 ,  C08J5/18 ,  C08J2201/048 ,  C08J2207/10 ,  C08J2305/04 ,  C08J2305/08 ,  C08L5/04 ,  C08L5/08

    Abstract: The present invention relates to a process for preparing a porous layer of biocompatible polymer, having a uniform density and porosity, comprising the following steps: —a) a quantity Qp of solution of the said polymer, having a viscosity Vp, is poured into a mould in order to form a first sublayer, the surface of the first sublayer being left to the open air; —b) a quantity Qs of solvent, having a viscosity Vs, lower than Vp, is spread uniformly over the surface of the first sublayer so as to form a second sublayer; —c) the first and second sublayers are subjected to a step of lyophilisation, in which the said polymer is a polysaccharide chosen from hyaluronic acid, alginic acid and chitosan, salts thereof and mixtures thereof.

    Abstract translation: 本发明涉及制备具有均匀密度和孔隙率的生物相容性聚合物多孔层的方法，包括以下步骤：a）将具有粘度Vp的所述聚合物溶液的量Qp倒入 模具以形成第一子层，第一子层的表面留在露天; -b），粘度Vs低于Vp的溶剂量Qs均匀地分散在第一子层的表面上，形成第二子层; -c）第一和第二子层进行冻干的步骤，其中所述聚合物是选自透明质酸，藻酸和壳聚糖的多糖，其盐及其混合物。

    Porous material and method of production thereof
    26.
    发明申请
    Porous material and method of production thereof 失效
    多孔材料及其生产方法

    公开(公告)号：US20070135528A1

    公开(公告)日：2007-06-14

    申请号：US10566873

    申请日：2004-07-29

    Applicant: Rachel Butler ,  Andrew Cooper

    Inventor： Rachel Butler ,  Andrew Cooper

    IPC: C08J9/26

    CPC classification number: A61L27/56 ,  C08J9/28 ,  C08J2201/048 ,  C08J2201/0504 ,  C08J2203/06

    Abstract: The present invention relates to a method for producing a porous material comprising the steps of; (a) providing a C/W emulsion comprising an aqueous phase, a matrix building material, a surfactant and liquid CO2 phase; (b) at least partially freezing the aqueous phase; (c) gasifying CO2 from the liquid CO2 phase to form an intermediate porous material; (d) venting gasified CO2 from the intermediate porous material; and (e) freeze drying the intermediate porous material at least substantially to remove the aqueous phase and form the porous material. The present invention also relates to a porous material obtainable by the method.

    Abstract translation: 本发明涉及一种生产多孔材料的方法，包括以下步骤： （a）提供包含水相，基质建筑材料，表面活性剂和液体CO 2相的C / W乳液; （b）至少部分冷冻水相; （c）从液体CO 2 2相中气化CO 2以形成中间多孔材料; （d）从中间多孔材料排出气化的CO 2 2; 和（e）至少基本上将中间多孔材料冷冻干燥以除去水相并形成多孔材料。 本发明还涉及可通过该方法获得的多孔材料。

    Non-degradable porous materials with high surface areas
    27.
    发明授权
    Non-degradable porous materials with high surface areas 失效
    具有高表面积的不可降解多孔材料

    公开(公告)号：US06979700B2

    公开(公告)日：2005-12-27

    申请号：US10271622

    申请日：2002-10-16

    Applicant: Peter X. Ma

    Inventor： Peter X. Ma

    IPC: B29C67/20 ,  C08J9/28

    CPC classification number: B29C67/20 ,  C08J9/28 ,  C08J2201/048 ,  C08J2201/054

    Abstract: A method for preparing a highly porous, high surface area non-degradable material includes the steps of mixing a non-degradable polymer with a solvent or mixture of solvents; gelling the mixture; and treating the gel under conditions whereby a substantially solvent free porous structure is created having a porosity greater than about 80%. The resultant material is mechanically strong and has an architecture including at least one of nano fibrous, micro fibrous, non fibrous, complex porous structure with nano fibrous architecture, and mixtures thereof.

    Abstract translation: 制备高度多孔，高表面积不可降解材料的方法包括将不可降解聚合物与溶剂或溶剂混合物混合的步骤; 凝胶混合物 并在条件下处理凝胶，由此产生具有大于约80％的孔隙率的基本上无溶剂的多孔结构。 所得到的材料是机械强度并且具有包括纳米纤维，微纤维，非纤维状，具有纳米纤维结构的复合多孔结构中的至少一种及其混合物的结构。

    Biofoam
    29.
    发明授权
    Biofoam 失效
    生物泡沫塑料

    公开(公告)号：US5382285A

    公开(公告)日：1995-01-17

    申请号：US43300

    申请日：1993-04-06

    Applicant: Robert L. Morrison

    Inventor： Robert L. Morrison

    IPC: C08J9/00 ,  C08J9/28 ,  C09D105/00 ,  C08L89/00 ,  C08L93/00

    CPC classification number: C08J9/0085 ,  C08J9/28 ,  C08J2201/048 ,  C08J2201/054 ,  C08J2305/00 ,  C08J2389/00

    Abstract: Biofoam is a rigid, opaque microcellular organic foam made from organic materials derived from natural products and biological organisms. Typical organic materials are agar, agarose, gelatin, algin, alginates, gellan gum, and microcrystalline cellulose. The organic material is dissolved in a polar solvent, typically water, and the solution can be gelled immediately. The gel is frozen and freeze-dried to form the biofoam. Alternatively, a nonpolar solvent is added to the solution and emulsified. The resulting emulsion is then gelled, frozen, and freeze-dried. A variety of crystalline, fibrous, or metallic additives may be added to produce lightweight composite materials with enhanced strength and insulating properties. The amount of dilution of the organic material in the solvent(s) determines the density of the resulting biofoams, which ranges from about 1.0 mg/cm.sup.3 to about 500 mg/cm.sup.3.

    Abstract translation: 生物泡沫塑料是由天然产物和生物有机体衍生的有机材料制成的刚性，不透明的微孔有机泡沫。 典型的有机材料是琼脂，琼脂糖，明胶，藻酸盐，藻酸盐，结冷胶和微晶纤维素。 将有机材料溶解在极性溶剂中，通常为水，并且溶液可以立即凝胶化。 将凝胶冷冻并冷冻干燥以形成生物泡沫。 或者，将非极性溶剂加入到溶液中并乳化。 然后将所得乳液凝胶化，冷冻并冷冻干燥。 可以加入各种结晶，纤维或金属添加剂以产生具有增强的强度和绝缘性能的轻质复合材料。 有机材料在溶剂中的稀释量决定所得生物泡沫的密度，其范围为约1.0mg / cm 3至约500mg / cm 3。

Patent Agency Ranking