• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    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.
    公开号:SU718001A3
    申请号:SU711629902
    申请日:1971-02-24
    公开日:1980-02-25
    发明作者:Бушию Жан；Фабр Альбер；Фор Альфонс
    申请人:Рон-Пуленк С.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention is intended for. Preparation of gas separation membranes A known method of obtaining a membrane is by applying a solution of polyvinyltrimethylsilane in chlorobenzene on a substrate, followed by drying at room temperature B for 2 hours and then 1 hour at. Known membranes have permeability on the order of. 10 cm / s mm Hg. st 1. The aim of the invention is to obtain a membrane with a diffusion coefficient of 100 times. more than the known, with the same separator-. Noah ability. Polymers and copolyes, measures (with styrene), for example, y and nyltriorganosilanes of the type, serve as the material for the manufacture of membranes. . . -sng-cnRt-Si-Uz where R, R 2 and Cs are alkyl. (methyl, ethyl, propyl, butyl and cyclot forces) radicals. The intrinsic viscosity of the polymers (in cyclohexane and at 25 ° C) must exceed 50 cm, preferably 70-200. To obtain a membrane, the vinyl subimer is dissolved in three organic compounds, two of which are solvents with no less than boiling points, and one with a boiling point of no less than at a higher boiling point, the most easily boiling solution is a non-solvent of the starting polymer. Chlorine aliphatic and aromatic hydrocarbons are used as solvents in mixtures: dichloromethane, chloroform, di- and tetrachloroethylene, chlorine and dichlorobenzene. Alcohols (methyl, ethyl, n-, iso- and tert-butyl), water and ketones (acetone, methyl ethyl ketone, cyclohexanone). The ratio of components in the mixture is selected so that the polymer does not dissolve, does not swell in a mixture of high boiling solvent and nonsolvent. The amount of light boiling solvent is 10-70% by weight. The polymer solution in these mixtures, OO layer, 5 mm, is deposited on a glass or metal substrate, evaporated at a temperature not higher than its boiling point of 25-10.0% of light
    solvent and coagulate the formed film with a non-solvent until the solvent is maximally extracted, then the film is dried at a temperature not higher. A porous membrane of thickness 0-500 microns with good mechanical strength and having a high selective permeability for gases such as hydrogen, helium, oxygen, nitrogen, methane, carbon dioxide, carbon monoxide is obtained.
    Example 1. To a solution of 20 g of polyvinyltrimethylsilylan in a mixture of 50 g of chlorobenzene and 58 g of dichloromethane, 32 g of isobutanol are added, the mixture is applied to a glass plate with a thickness of 500 microns, and approximately 45 g of dichloromethane is evaporated at room temperature (7 minutes) and the appearance of the film is immersed for 5 minutes in a bath with methyl alcohol. After drying in air for 2 h, a membrane thickness of 200 microns is obtained.
    Example 2. In a similar manner to Example 1, evaporated. A light solvent for I min (30 g removed) gave a 170 micron thick membrane. .
    Example 3. Use vinyltrimethylsilane c-polymer with vinyl dimethylpropylsilane using Example 2 to obtain a membrane membrane with a thickness of 160 microns.
    Example 4. To a solution of 100 g of polyvinylmethylsilane obtained in the presence of a metallic lithium catalyst, 160 g of isobutanol are added to a mixture of 300 g of dichloromethane and 250 g of chlorobenzene, after which the mixture is fed through a spinneret located at a distance of 0.35 mm from
    rotating drum, served on its surface. Part of the drum is immersed in methyl alcohol. The rotational speed of the drum is set so that the solution is in air for 73 seconds (23 ° C), and in methanol 10 minutes. Drying of the film is carried out on a roll group at 30 ° C, the thickness of the obtained products is 190-210 microns.
    Example 5. Preparing a solution of 10 g of polyvinyl trimethylsilylan in 45 with a mixture of chloroform and chlorobenzene is equal to: and 20 cm of isobutanol. Pour the solution onto a glass plate, forming a liquid film 0.5 mm thick. It is dried in air for 5 minutes at 23 ° C, then immersed in ethanol at 8 ° C and dried. A membrane with a dense layer thickness of 0.32 microns is obtained, the oxygen / nitrogen selectivity is 1.8, and the oxygen permeability is 12.47. x 10 cm / cm x mm Hg and nitrogen 6,74x10 cm / cm s-mm Hg.
    The permeability with respect to various gases obtained according to the specified examples of membranes are given in table 1 ..
    In tab. Figures 2 and 3 show the effect of the gas pressure in front of the membrane and the speed of its passage through the membrane on the enrichment of air mixtures with oxygen (using the membrane of Example 4 with a surface of 500 cm2). In all cases, the flow rate of the air passed through the membrane was 1% of. the volume of the mixture entering the cell.
    Analgesic results for nitrogen-hydrogen mixtures are given in Table 4 (cell temperature is).
    Table 1
    by comparing its permeability with a polymer with respect to oxygen. permeability of the source
    权利要求:
    Claims (1)
    [1]
    Claim
    A method of producing a membrane by applying a general Formula composition on a substrate of a vinyl polymer solution in a mixture of two solvents — chlorinated hydrocarbons — the difference between the boiling points of which is 30–90 ° С and a non-solvent with a boiling point higher than the boiling point of a low-boiling solvent and, after drying, it is treated with aliphatic alcohol, followed by drying .
    in organic solvents followed by drying, characterized in that in order to increase the diffusion coefficient of gases through the membrane,>
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    同族专利:
    公开号 | 公开日
    BE763749A|1971-09-03|
    RO59410A|1976-02-15|
    SU638264A3|1978-12-15|
    BR7101258D0|1973-03-08|
    HU164497B|1974-02-28|
    DK128478B|1974-05-13|
    FI56544B|1979-10-31|
    NL149708B|1976-06-15|
    DE2110158C3|1979-06-28|
    CS161124B2|1975-05-04|
    CH527860A|1972-09-15|
    ZA711337B|1971-11-24|
    DE2110158A1|1971-09-16|
    PL82813B1|1975-10-31|
    IL36303A|1973-07-30|
    DE2110158B2|1978-11-02|
    CA998816A|1976-10-26|
    LU62700A1|1971-10-13|
    SE373376B|1975-02-03|
    AT311059B|1973-10-25|
    US3754375A|1973-08-28|
    FR2082095A5|1971-12-10|
    GB1292782A|1972-10-11|
    IL36303D0|1971-04-28|
    ES388861A1|1974-02-01|
    NL7102398A|1971-09-07|
    JPS5221021B1|1977-06-08|
    FI56544C|1980-02-11|
    引用文献:
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    US3510387A|1965-06-24|1970-05-05|Gen Electric|Thin,substantially defect-free organopolysiloxane membrane|
    US3507829A|1966-04-11|1970-04-21|Gen Electric|Crosslinking of aromatic polymers with organic polysulfonazides|
    FR1567175A|1968-02-12|1969-05-16|US4073724A|1973-02-27|1978-02-14|Rhone-Poulenc, S.A.|Anisotropic phenolic polyether membrane|
    US4033731A|1973-06-13|1977-07-05|Rhone Poulenc S.A.|Partially crosslinked silalactone polymers, their preparation and their use|
    FR2295050B1|1974-10-23|1977-10-28|Inst Neftechimicheskogo Sintez|
    FR2410501B1|1976-11-15|1982-12-10|Monsanto Co|
    US4230463A|1977-09-13|1980-10-28|Monsanto Company|Multicomponent membranes for gas separations|
    JPS62723B2|1977-10-14|1987-01-09|Mitsubishi Chem Ind|
    US4243701A|1979-11-08|1981-01-06|Uop Inc.|Preparation of gas separation membranes|
    US4774039A|1980-03-14|1988-09-27|Brunswick Corporation|Dispersing casting of integral skinned highly asymmetric polymer membranes|
    CA1202837A|1980-03-14|1986-04-08|Wolfgang J. Wrasidlo|Asymmetric membranes and process therefor|
    US4393113A|1980-06-05|1983-07-12|Teitin Limited|Novel silicon-containing copolymer, ultrathin solid membrane composed of said copolymer, use of said solid membrane for concentrating a specified gas in a gaseous mixture, and process for producing said solid membrane|
    EP0044147B1|1980-07-16|1987-05-20|Imperial Chemical Industries Plc|Shaped articles formed from polymers capable of exhibiting anisotropic melts|
    US4470831A|1981-01-22|1984-09-11|Toray Industries, Inc.|Permselective membrane|
    DE3122186C2|1981-06-04|1990-11-15|Schorlemer, Freiherr Von, Clemens, 6000 Frankfurt, De|
    GB2104411B|1981-07-08|1985-02-20|Ube Industries|Aromatic polyimide composite separating membrane|
    FR2512432B1|1981-09-09|1985-07-26|Belyakov Viktor|PROCESS FOR THE BIOLOGICAL PURIFICATION OF PIPELINE WATER AND PURIFIED WATER ACCORDING TO SAID PROCESS|
    JPH0147210B2|1981-11-30|1989-10-12|Mitsubishi Chem Ind|
    US4428776A|1982-06-23|1984-01-31|The Standard Oil Company|Cellulosic semipermeable membranes containing silicon compounds|
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    JPH0248010B2|1983-09-05|1990-10-23|Daicel Huels Kk|
    JPS6261329B2|1983-12-23|1987-12-21|Toyoda Chuo Kenkyusho Kk|
    US4551156A|1984-01-16|1985-11-05|Standard Oil Company|Permselective membrane compositions for gas separations and process for the separation of gases therewith|
    FR2564452B1|1984-05-18|1988-06-10|Rumyantsev Ivan|PROCESS FOR THE PREPARATION OF AMMONIA AND AMMONIA OBTAINED BY SAID PROCESS|
    US4640901A|1985-03-18|1987-02-03|University Of Cincinnati|High temperature membrane|
    US4681605A|1985-06-27|1987-07-21|A/G Technology Corporation|Anisotropic membranes for gas separation|
    CA1249333A|1985-06-28|1989-01-24|James E. Jones|Electrochemical sensor and membrane therefor|
    DE3880652T2|1987-12-28|1993-11-18|Idemitsu Kosan Co|Selective gas permeation membranes and process for their manufacture.|
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    BR0007614B1|1999-01-21|2010-10-19|integrally asymmetric hydrophobic membrane preparation process, and hydrophobic membrane.|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR7007570A|FR2082095A5|1970-03-03|1970-03-03|
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