DE2341392
1415768 Porous polymethylmethacrylate membrane TORAY INDUSTRIES Inc 16 Aug 1973 [16 Aug 1972 17 Feb 1973] 38720/73 Heading B5B [Also in Division C3] Hydrogel semi-permeable films and fibres are prepared from a mixture of isotactic and syndiotactic polymethylmethacrylates. The structures are prepared...
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| creator | FUJII, YOSHISHIGE TANZAWA, HIROSHI OTSU, SHIGA MAEKAWA, HARUKI KAMAKURA, KANAGAWA MATSUSHITA, TAKAO, YUUSHUDAINISHI, CHIBA SAKAI, YOSHITADA SUGITA, KOUJI |
| description | 1415768 Porous polymethylmethacrylate membrane TORAY INDUSTRIES Inc 16 Aug 1973 [16 Aug 1972 17 Feb 1973] 38720/73 Heading B5B [Also in Division C3] Hydrogel semi-permeable films and fibres are prepared from a mixture of isotactic and syndiotactic polymethylmethacrylates. The structures are prepared by dissolving the mixture in a suitable solvent to form a sol, forming the sol into the desired shape, cooling it to form a gel and then replacing the solvent with water. Hollow fibres may be given by extruding through an annular orifice having an inner tube coaxial with the orifice by which a fluid is injected into the fibre. The fibre is then cooled to below the melting point of the gel by contact with a cooling gas, which is preferably the vapour of a coagulating liquid, and then coagulating the fibre by means of an aqueous non-solvent. |
| format | Patent |
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The structures are prepared by dissolving the mixture in a suitable solvent to form a sol, forming the sol into the desired shape, cooling it to form a gel and then replacing the solvent with water. Hollow fibres may be given by extruding through an annular orifice having an inner tube coaxial with the orifice by which a fluid is injected into the fibre. The fibre is then cooled to below the melting point of the gel by contact with a cooling gas, which is preferably the vapour of a coagulating liquid, and then coagulating the fibre by means of an aqueous non-solvent.</description><edition>2</edition><language>eng</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ; MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS ; METALLURGY ; NATURAL OR ARTIFICIAL THREADS OR FIBRES ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; SEPARATION ; SPINNING ; TEXTILES ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING</subject><creationdate>1975</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19750320&DB=EPODOC&CC=DE&NR=2341392B2$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19750320&DB=EPODOC&CC=DE&NR=2341392B2$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>FUJII, YOSHISHIGE</creatorcontrib><creatorcontrib>TANZAWA, HIROSHI</creatorcontrib><creatorcontrib>OTSU, SHIGA</creatorcontrib><creatorcontrib>MAEKAWA, HARUKI</creatorcontrib><creatorcontrib>KAMAKURA, KANAGAWA</creatorcontrib><creatorcontrib>MATSUSHITA, TAKAO, YUUSHUDAINISHI, CHIBA</creatorcontrib><creatorcontrib>SAKAI, YOSHITADA</creatorcontrib><creatorcontrib>SUGITA, KOUJI</creatorcontrib><title>DE2341392</title><description>1415768 Porous polymethylmethacrylate membrane TORAY INDUSTRIES Inc 16 Aug 1973 [16 Aug 1972 17 Feb 1973] 38720/73 Heading B5B [Also in Division C3] Hydrogel semi-permeable films and fibres are prepared from a mixture of isotactic and syndiotactic polymethylmethacrylates. The structures are prepared by dissolving the mixture in a suitable solvent to form a sol, forming the sol into the desired shape, cooling it to form a gel and then replacing the solvent with water. Hollow fibres may be given by extruding through an annular orifice having an inner tube coaxial with the orifice by which a fluid is injected into the fibre. 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The structures are prepared by dissolving the mixture in a suitable solvent to form a sol, forming the sol into the desired shape, cooling it to form a gel and then replacing the solvent with water. Hollow fibres may be given by extruding through an annular orifice having an inner tube coaxial with the orifice by which a fluid is injected into the fibre. The fibre is then cooled to below the melting point of the gel by contact with a cooling gas, which is preferably the vapour of a coagulating liquid, and then coagulating the fibre by means of an aqueous non-solvent.</abstract><edition>2</edition><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS METALLURGY NATURAL OR ARTIFICIAL THREADS OR FIBRES ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL SEPARATION SPINNING TEXTILES THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING |
| title | DE2341392 |
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