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公开(公告)号：US4954381A
公开(公告)日：1990-09-04
申请号：US171497
申请日：1988-03-21
Applicant: Israel Cabasso , Moshe Levy
Inventor： Israel Cabasso , Moshe Levy
CPC classification number: B01D67/0006 , B01D67/0004 , B01D67/003 , B01D69/02 , C08J3/005 , C08J9/28 , B01D2323/12 , B01D2323/40 , C08J2201/05 , Y10S260/31 , Y10S424/07 , Y10S514/963 , Y10S977/773 , Y10S977/788 , Y10S977/896 , Y10T428/24149 , Y10T428/2985 , Y10T428/2987
Abstract: A membrane of defined pore structure and controlled pore diameter and a method of preparing the membrane which comprises dispersing in a water soluble polymer solution (A) an organic polymer solution (B), the water-soluble polymer solution (A) being a non-solvent for the polymer solution (B), to form micro-spherical droplets of the polymer solution (A) which are enveloped by a solid phase consisting of a coagulated or cross-linked polymer solution (B); evenly casting the dispersion on a flat surface; and evaporating the solvent for the polymer solution (B) to form a microporous membrane comprised of the polymer (B), the porosity, pore size, and void volume of the microporous membrane being a function of the polymer (A) concentration, the microsphere dimensions and the temperature and evaporation rate. The water-soluble polymer (A) is selected from polyethyleneimine, gelatin, polyvinyl-pyrrolidone, polyvinyl pyridinium halide, polyacrylic acid, polyhydroxyethylmethacrylate (HEMA), dextran, or polyvinyl acetate. The continuous phase polymer (B) is selected from a brominated polyphenylene oxide, polyphenylene oxide, polyacetic acid, polystyrene, polyglycol acrylate (PGA), polymethylmethacrylate, cellulose acetate, polyvinyl acetate, polycarbonate and polyvinylidene fluoride.
Abstract translation: 一种限定孔结构和受控孔径的膜和一种制备膜的方法，其包括将水溶性聚合物溶液（A）分散在有机聚合物溶液（B）中，所述水溶性聚合物溶液（A） 用于聚合物溶液（B）的溶剂，以形成聚合物溶液（A）的微球形液滴，其被由凝结或交联的聚合物溶液（B）组成的固相包围; 均匀地将分散体浇铸在平坦的表面上; 并蒸发聚合物溶液（B）的溶剂以形成由聚合物（B）组成的微孔膜，微孔膜的孔隙率，孔径和空隙体积是聚合物（A）浓度的函数，微球体 尺寸和温度和蒸发速率。 水溶性聚合物（A）选自聚乙烯亚胺，明胶，聚乙烯吡咯烷酮，聚氯乙烯吡啶鎓卤化物，聚丙烯酸，聚羟基乙基甲基丙烯酸酯（HEMA），葡聚糖或聚乙酸乙烯酯。 连续相聚合物（B）选自溴化聚苯醚，聚苯醚，聚乙酸，聚苯乙烯，聚乙二醇丙烯酸酯（PGA），聚甲基丙烯酸甲酯，乙酸纤维素，聚乙酸乙烯酯，聚碳酸酯和聚偏二氟乙烯。
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公开(公告)号：US3754375A
公开(公告)日：1973-08-28
申请号：US3754375D
申请日：1971-03-02
Applicant: RHONE POULENC SA
Inventor： BOUCHILLOUX J , FABRE A , FAURE A
CPC classification number: B01D71/44 , C08J9/28 , C08J2201/05 , C08J2201/0542
Abstract: An anisotropic membrane is provided having excellent mechanical properties combined with good permeation characteristics which comprises a vinyltriorganosilane polymer or copolymer consisting of a dense layer, of average thickness between 0.01 and 10 Mu , and a porous layer with open pores, of thickness up to 500 Mu in which the volume of the interstitial spaces in the porous layer represents 20 to 80 percent of the total volume of the membrane.
Abstract translation: 提供具有优异的机械性能和良好的渗透特性的各向异性膜，其包括乙烯基三有机硅烷聚合物或由致密层组成的共聚物，其平均厚度为0.01至10微米，和具有至多500微米厚度的开孔的多孔层 其中多孔层中的间隙空间的体积占膜的总体积的20至80％。
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公开(公告)号：US3486946A
公开(公告)日：1969-12-30
申请号：US3486946D
申请日：1966-10-04
Applicant: ESB INC
Inventor： DUDDY JOSEPH C
CPC classification number: H01M2/1653 , B29C67/202 , C08J9/28 , C08J2201/05
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公开(公告)号：US3445272A
公开(公告)日：1969-05-20
申请号：US41957664
申请日：1964-12-18
Applicant: UNITED SHOE MACHINERY CORP
Inventor： NEWTON CHARLES G JR
IPC: B05D7/24 , C08G18/08 , C08J3/03 , C08J9/28 , C08L1/28 , C08L75/04 , C08L89/00 , C09D127/06 , C09D133/08 , D06M15/693 , D06N3/00 , C23C13/04 , C09D3/72 , C09D5/00
CPC classification number: B05D7/24 , C08G18/0866 , C08J3/03 , C08J9/28 , C08J9/283 , C08J2201/05 , C08K5/01 , C08L1/10 , C08L1/28 , C08L9/02 , C08L27/06 , C08L75/04 , C08L89/00 , C08L89/005 , C09D127/06 , C09D133/08 , D06M15/693 , D06N3/0052 , Y10S428/904 , Y10T428/249978 , Y10T428/249981 , Y10T428/264 , Y10T428/31935 , Y10T442/2139 , C08L2666/02 , C08L2666/26 , C08L2666/28
Abstract: 1,135,649. Coating compositions. UNITED SHOE MACHINERY CORP. 15 Dec., 1965 [18 Dec., 1964], No. 53160/65. Headings C3C, C3P and C3R. [Also in Division B2] Coating compositions suitable for depositing porous films comprise an aqueous dispersion of a film-forming polymeric material and fine droplets, of which from 30-60% have dimensions in the range of 0À001-0À003 mm. and substantially the remainder of said droplets have dimensions in the range of 0À003-0À010 mm., of a water-immiscible volatile organic liquid in which the polymeric material is insoluble or substantially insoluble, said liquid being suspended in the aqueous phase of said dispersion and being present in an amount of 25-300% based on the weight of said polymeric material. Preferred organic liquids are petroleum hydrocarbon fractions, e.g. mineral spirits, petroleum naphtha and kerosene; others mentioned are halogenated hydrocarbons and nitroparaffins. The polymeric material may be, for example, a latex of a butadiene-acrylonitrile copolymer which may be carboxylated, an acrylic ester polymer or copolymer emulsion, a latex of polyvinyl chloride or copolymer of vinyl chloride with e.g. vinyl acetate, or a latex of an elastomeric polyurethane, formed by reacting a polyester or polyether polyol with excess of a polyisocyanate and then chain extending the -NCO terminated condensate by reaction with a compound such as a polyol, polyamine or amino-alcohol. The composition may include a modifier to improve gel strength of the coatings, e.g. casein rendered water-soluble by treatment with an alkaline material, polyvinyl alcohol, methyl cellulose, and the insoluble resinous residue obtained from the distillation of pine tar resin. Other components which may be added include waxes or wax-like substances, gums, colouring agents, e.g. carbon black or zinc oxide, and mineral fillers. After a coating has been deposited on a surface, it is coalesced by evaporating water whereby the polymer particles gel; and when the solvent droplets are evaporated a porous coating is obtained.
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