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公开(公告)号：JPS62129105A
公开(公告)日：1987-06-11
申请号：JP26995285
申请日：1985-11-29
Applicant: AGENCY IND SCIENCE TECHN
Inventor： HIROTSU TOSHIHIRO , NAKAMURA EIICHIRO , MIZOGUCHI KENSAKU , SUDA MASAO
IPC: B01D71/70
Abstract: PURPOSE:To separate and recover alcohol with a high permeation speed by permeating a mixed solution of water and alcohol into the composite membrane comprising polysiloxane filled in the micro pores of porous high-molecular membrane. CONSTITUTION:Liquid polydimethylsiloxane is dropped and stretched on a porous high-molecular membrane, a polypropylene porous membrane and the like, and the said polydimethylsiloxane is permeated into the micro pores of porous membrane. The surplus polydimethylsiloxane remaining on the surface of membrane is wiped out by tissue papers and the like to prepare a composite membrane filled with polydimethylsiloxane. Pervaporation is carried out by utilizing the said composite membrane and a mixed solution of water and alcohol as supplying liquid to permeate alcohol preferentially and separate.
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公开(公告)号：JPS62129112A
公开(公告)日：1987-06-11
申请号：JP26995185
申请日：1985-11-29
Applicant: AGENCY IND SCIENCE TECHN
Inventor： HIROTSU TOSHIHIRO , NAKAMURA EIICHIRO , MIZOGUCHI KENSAKU , SUDA MASAO
IPC: B01D17/02
Abstract: PURPOSE:To enhance durability and stability by preparing a hydrophilic separating membrane comprising graft polymerization of hydrophilic monomer over the surface of porous high-molecular membrane base, passing the mixed solution of water and alcohol through the said membrane and permeating water preferentially. CONSTITUTION:The graft polymerization is carried out by adding hydrophilic monomer such as acrylamide water solution, after plasma treatment, on the surface of porous high-molecular membrane such as porous polypropylene. The membrane thus prepared is washed with distilled water repeatedly to remove the unreacted monomer, homopolymer, etc., and a hydrophilic membrane is produced. The water-ethanol mixed solution is passed through the hydrophilic separating membrane thus produced, and water is permeated preferentially. Pervaporation is suitable for carrying out the said separation. Process of separation, durable and stabilized, is thus achieved.
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公开(公告)号：JPS62129107A
公开(公告)日：1987-06-11
申请号：JP26995385
申请日：1985-11-29
Applicant: AGENCY IND SCIENCE TECHN
Inventor： HIROTSU TOSHIHIRO , ICHIMURA KUNIHIRO , MIZOGUCHI KENSAKU , NAKAMURA EIICHIRO
Abstract: PURPOSE:To prepare a water selective and permeable separating membrane having such practical performances as superb separability, mechanical strength of membrane, etc. by utilizing photo-crosslinked photosensitive polyvinyl alcohol derivative to apply the porous high-molecular membrane. CONSTITUTION:The water solution of water soluble photosensitive resin such as polyvinyl alcohol or partial saponifiable vinyl acetate, etc. shown in the formula is applied on the porous high-molecular membrane such as cellulose acetate porous membrane, exposed to the interior light and the like after air-drying, sensitized and crosslinked with water soluble photosensitive resin to render the said membrane insoluble. By utilizing the composite membrane thus prepared, pervaporation is carried out to separate the water-ethanol mixing solution and the like.
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