Preparing cellulose ester membranes for gas separation
    63.
    发明授权
    Preparing cellulose ester membranes for gas separation 失效
    制备纤维素酯膜进行气体分离

    公开(公告)号:US5011637A

    公开(公告)日:1991-04-30

    申请号:US301000

    申请日:1989-01-23

    Abstract: This invention relates to a novel composition useful for preparing a semi-permeable cellulose ester gas separation membrane, which composition includes a mixture of a cellulose ester, a solvent selected from the group consisting essentially of glycerol acetate, glycerol diacetate, glycerol triacetate, and mixtures thereof, and optionally the non-solvent glycerol. This invention also relates to a process of fabricating a cellulose ester gas separation membrane from said composition.

    Abstract translation: 本发明涉及一种可用于制备半透性纤维素酯气体分离膜的新型组合物,该组合物包括纤维素酯,选自基本上由甘油乙酸酯,甘油二乙酸酯,甘油三乙酸酯和混合物 以及任选的非溶剂甘油。 本发明还涉及从所述组合物制备纤维素酯气体分离膜的方法。

    0.1 Micron rated polypropylene membrane and method for its preparation
    64.
    发明授权
    0.1 Micron rated polypropylene membrane and method for its preparation 失效
    0.1微米级聚丙烯膜及其制备方法

    公开(公告)号:US4490431A

    公开(公告)日:1984-12-25

    申请号:US438823

    申请日:1982-11-03

    Abstract: There is disclosed a substantially skinless microporous polypropylene membrane characterized by having(a) a bubble point of about 25 to about 50 psi;(b) a thickness of about 3 to about 7 mils;(c) a nitrogen flow rate of at least 0.5 liters per square centimeter-minute;(d) a burst strength of at least 10 psi; and(e) an S value of about 15, or less.There is also disclosed a method of preparing a microporous polypropylene membrane comprising heating a mixture of about 30 percent polypropylene and about 70 percent, N,N-bis(2-hydroxyethyl)tallowamine, by weight, to a temperature and for a time sufficient to form a homogeneous solution, casting or extruding said solution at a thickness of about 3 to about 7 mils, onto a chill roll maintained at a temperature of from about 50.degree. to about 80.degree. C., allowing said solution to solidify on said chill roll to form a solid sheet, removing said solid sheet from said chill roll and removing at least a substantial portion of the liquid from said sheet to form the microporous polypropylene membrane.

    Abstract translation: 公开了一种基本上无皮的微孔聚丙烯膜,其特征在于具有(a)约25至约50psi的起泡点; (b)约3至约7密耳的厚度; (c)至少0.5升/平方厘米分钟的氮气流量; (d)至少10psi的爆裂强度; 和(e)约15或更小的S值。 还公开了一种制备微孔聚丙烯膜的方法,其包括将约30%聚丙烯和约70%重量的N,N-双(2-羟乙基)牛油胺的混合物加热到足以使 形成均匀的溶液,将所述溶液以约3至约7密耳的厚度浇铸或挤出到保持在约50℃至约80℃温度的冷却辊上,使所述溶液在所述冷却辊上固化 以形成固体片材,从所述冷却辊中除去所述固体片材并从所述片材中除去至少大部分的液体以形成微孔聚丙烯膜。

    Porous-ceramic exhaust oxidation catalyst

    公开(公告)号:USRE28195E

    公开(公告)日:1974-10-08

    申请号:US28195D

    申请日:1974-02-06

    Abstract: 1. A PROCESS FOR PREPARING AN ENGINE EXHAUST CATALYST COMPRISING THE FOLLOWING STEPS: A. HOMOGENEOUSLY BLENDING A COMPOSITION CONSISTING ESSENTIALLY OF 15-80 VOLUME PERCENT OF A POLYOLEFIN HAING A MOLECULAR WEIGHT OF AT LEAST 150,000 AND A STANDARD LOAD MELT INDEX OF SUBSTANTIALLY ZERO, 5-67 VOLUME PERCENT OF A CERAMIC FILLER, SELECTED FROM THE GROUP CONSISTING OF ALUMINUM, MULLITE, ZIRCON MULLITE, MAGNESIUM ALUMINATE SPINEL AND CORDIERITE AND 15-80 VOLUME PERCENT OF A PLASTICIZER; SELECTED FROM THE GROUP CONSISTING OF MINERAL OILS DETHYLENE GLYCOL, PROPYLENE GLYCOL, DIPROPYLENE GLYCOL GLYCERINE, AND A GLYCEROL MONOACETATE, TRIMERTHYLENE GLYCOL, TETRAMETHYLENE GLYCOL, 2,3BUTYLENE GLYCOL, TRIETHYL PHOSPHATE, POLYVINYL ALCOHOL, AND POLYVINYL PYRROLIDONE, B. HEATING SAID COMPOSITION TO AOUT 125* TO 175*C., MOLDING TO FORM A PLASTIC SHEET AND IMPRESSING RIBS THEREON, C. ROLLING SAID PLASTIC SHEET SO THAT SAID RIBS CONTACT SAID SHEET, HEAATING TO ABOUT 150*CC. TO JUST BELOW THE BURN OFF POINT TO FUSE THE CONTACTING AREAS TOGETHER THERMOPLASTICALLY, D. EXTRACTING SAID PLASTICIZER WITH WATER OR AN ORGANIC SOLVENT, E. REMOVING SAAID POLYOLEFIN BY HEATING TO 240* TO 700*C. TO FORM A POROUS CERAMIC STRUCTURE, AND TO BURN OFF THE POLYOLEFIN AND, F. FIRING SAID POROUS CERAMIC STRUCTURE AT A TEMPERATURE OF 1,300* TO 1,450*C. (FOR ABOUT 2 HOURS) FOR A TIME SUFFICIENT TO SINTER SAID POROUS CERAMIC STRUCTURE, G. IMPREGNATING THE POROUS CERAMIC STRUCTURE WITH SOLUTIONS OF SOLUBLE SATS OF METALS EXHIBITING CATALYTIC ACTIVITY FOR CONVERTING ENGINE EXHAUST GASES AND HEATING TO CONVERT THE METALS TO THE ACTIVE FORM.

    MULTIBLOCK COPOLYMER FILMS WITH INORGANIC NANOPARTICLES, METHODS OF MAKING SAME, AND USES THEREOF
    68.
    发明申请
    MULTIBLOCK COPOLYMER FILMS WITH INORGANIC NANOPARTICLES, METHODS OF MAKING SAME, AND USES THEREOF 审中-公开
    具有无机纳米颗粒的多层共聚物膜,其制备方法及其用途

    公开(公告)号:US20160229969A1

    公开(公告)日:2016-08-11

    申请号:US15024727

    申请日:2014-09-25

    Abstract: Asymmetric organic-inorganic films and methods for forming and using such films. For example, the films are used as membranes for selective separation applications. The methods combine co-assembly of block copolymer (BCP) and inorganic nanoparticles (NPs), such as, for example, titanium dioxide (TiO2), with non-solvent induced phase separation. The resulting films exhibit structural asymmetry. For example, the films have a thin nanoporous surface layer on top of a macroporous finger-like support layer. Parameters that may dictate membrane morphology include the fraction of inorganic nanoparticles used and the length of time allowed for surface layer development. In filtration tests, the resulting membranes show both desirable selectivity and permeability. The synthesis methods for hybrid membranes provide a new self-assembly platform upon which multi-functional and high-performance organic-inorganic membranes can be formed.

    Abstract translation: 不对称有机 - 无机膜及其形成和使用方法。 例如,膜用作选择性分离应用的膜。 该方法将非共溶剂诱导的相分离法与嵌段共聚物(BCP)和无机纳米粒子(NPs)如二氧化钛(TiO 2)共组装。 所得膜显示出结构不对称性。 例如,膜在大孔指状支撑层的顶部具有薄的纳米多孔表面层。 可能决定膜形态的参数包括使用的无机纳米粒子的分数和允许表层开发的时间长度。 在过滤测试中,所得膜显示出期望的选择性和渗透性。 混合膜的合成方法提供了一种新的自组装平台,可以在其上形成多功能和高性能的有机 - 无机膜。

    Ultra-Thin Polymer Film, and Porous Ultra-Thin Polymer Film
    69.
    发明申请
    Ultra-Thin Polymer Film, and Porous Ultra-Thin Polymer Film 有权
    超薄聚合物膜和多孔超薄聚合物膜

    公开(公告)号:US20150056399A1

    公开(公告)日:2015-02-26

    申请号:US14383191

    申请日:2013-03-12

    Abstract: The objective of the present invention is to provide a porous ultra-thin polymer film, and a method for producing said porous ultra-thin polymer film. The present invention provides a porous ultra-thin polymer film with a film thickness of 10 nm-1000 nm. In addition, the present invention provides a method for producing a porous ultra-thin polymer film, comprising the steps of: dissolving two types of mutually-immiscible polymers in a first solvent in an arbitrary proportion to obtain a solution; applying the solution onto a substrate and then removing the first solvent from the solution applied onto the substrate to obtain a phase-separated ultra-thin polymer film that has been phase-separated into a sea-island structure; and immersing the ultra-thin polymer film in a second solvent which is a good solvent for the polymer of the island parts but a poor solvent for a polymer other than the island parts to remove the island parts, thereby obtaining a porous ultra-thin polymer film.

    Abstract translation: 本发明的目的是提供一种多孔超薄聚合物膜,以及一种生产该多孔超薄聚合物膜的方法。 本发明提供一种膜厚度为10nm-1000nm的多孔超薄聚合物膜。 此外,本发明提供一种多孔超薄聚合物膜的制造方法,其特征在于,包括以下任意比例将两种相互不混溶的聚合物溶解在第一溶剂中,得到溶液; 将溶液施加到基材上,然后从施加到基材上的溶液中除去第一溶剂,得到相分离成海岛结构的相分离超薄膜; 并将超薄聚合物膜浸渍在作为岛部分的聚合物的良溶剂的第二溶剂中,但除了岛部分以外的聚合物的不良溶剂以除去岛部分,从而获得多孔超薄聚合物 电影。

    POROUS POLYBENZIMIDAZOLE RESIN AND METHOD OF MAKING SAME
    70.
    发明申请
    POROUS POLYBENZIMIDAZOLE RESIN AND METHOD OF MAKING SAME 审中-公开
    多孔聚苯并咪唑树脂及其制备方法

    公开(公告)号:US20130331470A1

    公开(公告)日:2013-12-12

    申请号:US13934265

    申请日:2013-07-03

    Abstract: A porous polybenzimidazole (PBI) particulate resin is disclosed. This resin is easily dissolved at ambient temperatures and pressures. The resin is made by: dissolving a virgin PBI resin in a highly polar solvent; precipitating the dissolved PBI in a bath; and drying the precipitated PBI, the dried precipitated PBI being porous. The porous PBI resin may be dissolved by: mixing a porous PBI resin with a highly polar solvent at ambient temperatures and pressures to form a solution.

    Abstract translation: 公开了一种多孔聚苯并咪唑(PBI)颗粒树脂。 该树脂在环境温度和压力下容易溶解。 树脂通过以下方法制备:将未处理的PBI树脂溶解在高极性溶剂中; 将溶解的PBI沉淀在浴中; 并干燥沉淀的PBI,干燥的沉淀PBI是多孔的。 可以通过在环境温度和压力下将多孔PBI树脂与高极性溶剂混合以形成溶液来溶解多孔PBI树脂。

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