MAGNETIC RECORDING MEDIUM
PURPOSE:To obtain a magnetic recording medium for a VTR, etc. having improved skew and wear resistance by coating a magnetic layer contg. polyisocyanate and having a moisture content at a specific value or above on a substrate having a thermal shrinkage rate in a longitudinal direction at a specific...
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| creator | HASHIMOTO HIROSHI OKITA TSUTOMU HIBINO NOBUROU YAMADA YASUYUKI MUKOUDA YOSHIHITO |
| description | PURPOSE:To obtain a magnetic recording medium for a VTR, etc. having improved skew and wear resistance by coating a magnetic layer contg. polyisocyanate and having a moisture content at a specific value or above on a substrate having a thermal shrinkage rate in a longitudinal direction at a specific value or above then subjecting the same to a heat treatment. CONSTITUTION:A coating liquid which is prepd. by dispersing magnetic powder in a mixture contg. a vinyl chloride-vinyl acetate-maleic acid copolymer or the like or nitrocellulose as a main binder and contg. polyurethane and polyisocyanate and is controlled to contain >=0.35% moisture to permit easy curing reaction is coated on the surface of a non-magnetic substrate of polyester, fibrous polymer, etc., of which the thermal shrinkage rate in the longitudinal direction is |
| format | Patent |
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CONSTITUTION:A coating liquid which is prepd. by dispersing magnetic powder in a mixture contg. a vinyl chloride-vinyl acetate-maleic acid copolymer or the like or nitrocellulose as a main binder and contg. polyurethane and polyisocyanate and is controlled to contain >=0.35% moisture to permit easy curing reaction is coated on the surface of a non-magnetic substrate of polyester, fibrous polymer, etc., of which the thermal shrinkage rate in the longitudinal direction is <=0.15% in the value measured by causing thermal shrinkage at 70 deg.C at free of tension for 48hr. The coating is heat-treated for 20-60hr at 30-70 deg.C after the application. The skew and wear resistance are thus improved without giving adverse influence on other characteristics.</description><language>eng</language><subject>ADHESIVES ; CHEMICAL PAINT OR INK REMOVERS ; CHEMISTRY ; COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS ; CORRECTING FLUIDS ; DYES ; FILLING PASTES ; INFORMATION STORAGE ; INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER ; INKS ; METALLURGY ; MISCELLANEOUS APPLICATIONS OF MATERIALS ; MISCELLANEOUS COMPOSITIONS ; NATURAL RESINS ; PAINTS ; PASTES OR SOLIDS FOR COLOURING OR PRINTING ; PHYSICS ; POLISHES ; USE OF MATERIALS THEREFOR ; WOODSTAINS</subject><creationdate>1984</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=19840504&DB=EPODOC&CC=JP&NR=S5977622A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25563,76318</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19840504&DB=EPODOC&CC=JP&NR=S5977622A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HASHIMOTO HIROSHI</creatorcontrib><creatorcontrib>OKITA TSUTOMU</creatorcontrib><creatorcontrib>HIBINO NOBUROU</creatorcontrib><creatorcontrib>YAMADA YASUYUKI</creatorcontrib><creatorcontrib>MUKOUDA YOSHIHITO</creatorcontrib><title>MAGNETIC RECORDING MEDIUM</title><description>PURPOSE:To obtain a magnetic recording medium for a VTR, etc. having improved skew and wear resistance by coating a magnetic layer contg. polyisocyanate and having a moisture content at a specific value or above on a substrate having a thermal shrinkage rate in a longitudinal direction at a specific value or above then subjecting the same to a heat treatment. CONSTITUTION:A coating liquid which is prepd. by dispersing magnetic powder in a mixture contg. a vinyl chloride-vinyl acetate-maleic acid copolymer or the like or nitrocellulose as a main binder and contg. polyurethane and polyisocyanate and is controlled to contain >=0.35% moisture to permit easy curing reaction is coated on the surface of a non-magnetic substrate of polyester, fibrous polymer, etc., of which the thermal shrinkage rate in the longitudinal direction is <=0.15% in the value measured by causing thermal shrinkage at 70 deg.C at free of tension for 48hr. The coating is heat-treated for 20-60hr at 30-70 deg.C after the application. The skew and wear resistance are thus improved without giving adverse influence on other characteristics.</description><subject>ADHESIVES</subject><subject>CHEMICAL PAINT OR INK REMOVERS</subject><subject>CHEMISTRY</subject><subject>COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS</subject><subject>CORRECTING FLUIDS</subject><subject>DYES</subject><subject>FILLING PASTES</subject><subject>INFORMATION STORAGE</subject><subject>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</subject><subject>INKS</subject><subject>METALLURGY</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>PAINTS</subject><subject>PASTES OR SOLIDS FOR COLOURING OR PRINTING</subject><subject>PHYSICS</subject><subject>POLISHES</subject><subject>USE OF MATERIALS THEREFOR</subject><subject>WOODSTAINS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1984</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJD0dXT3cw3xdFYIcnX2D3Lx9HNX8HV18Qz15WFgTUvMKU7lhdLcDApuriHOHrqpBfnxqcUFicmpeakl8V4BwaaW5uZmRkaOxkQoAQDaIh_o</recordid><startdate>19840504</startdate><enddate>19840504</enddate><creator>HASHIMOTO HIROSHI</creator><creator>OKITA TSUTOMU</creator><creator>HIBINO NOBUROU</creator><creator>YAMADA YASUYUKI</creator><creator>MUKOUDA YOSHIHITO</creator><scope>EVB</scope></search><sort><creationdate>19840504</creationdate><title>MAGNETIC RECORDING MEDIUM</title><author>HASHIMOTO HIROSHI ; OKITA TSUTOMU ; HIBINO NOBUROU ; YAMADA YASUYUKI ; MUKOUDA YOSHIHITO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPS5977622A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1984</creationdate><topic>ADHESIVES</topic><topic>CHEMICAL PAINT OR INK REMOVERS</topic><topic>CHEMISTRY</topic><topic>COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS</topic><topic>CORRECTING FLUIDS</topic><topic>DYES</topic><topic>FILLING PASTES</topic><topic>INFORMATION STORAGE</topic><topic>INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER</topic><topic>INKS</topic><topic>METALLURGY</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>PAINTS</topic><topic>PASTES OR SOLIDS FOR COLOURING OR PRINTING</topic><topic>PHYSICS</topic><topic>POLISHES</topic><topic>USE OF MATERIALS THEREFOR</topic><topic>WOODSTAINS</topic><toplevel>online_resources</toplevel><creatorcontrib>HASHIMOTO HIROSHI</creatorcontrib><creatorcontrib>OKITA TSUTOMU</creatorcontrib><creatorcontrib>HIBINO NOBUROU</creatorcontrib><creatorcontrib>YAMADA YASUYUKI</creatorcontrib><creatorcontrib>MUKOUDA YOSHIHITO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HASHIMOTO HIROSHI</au><au>OKITA TSUTOMU</au><au>HIBINO NOBUROU</au><au>YAMADA YASUYUKI</au><au>MUKOUDA YOSHIHITO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>MAGNETIC RECORDING MEDIUM</title><date>1984-05-04</date><risdate>1984</risdate><abstract>PURPOSE:To obtain a magnetic recording medium for a VTR, etc. having improved skew and wear resistance by coating a magnetic layer contg. polyisocyanate and having a moisture content at a specific value or above on a substrate having a thermal shrinkage rate in a longitudinal direction at a specific value or above then subjecting the same to a heat treatment. CONSTITUTION:A coating liquid which is prepd. by dispersing magnetic powder in a mixture contg. a vinyl chloride-vinyl acetate-maleic acid copolymer or the like or nitrocellulose as a main binder and contg. polyurethane and polyisocyanate and is controlled to contain >=0.35% moisture to permit easy curing reaction is coated on the surface of a non-magnetic substrate of polyester, fibrous polymer, etc., of which the thermal shrinkage rate in the longitudinal direction is <=0.15% in the value measured by causing thermal shrinkage at 70 deg.C at free of tension for 48hr. The coating is heat-treated for 20-60hr at 30-70 deg.C after the application. The skew and wear resistance are thus improved without giving adverse influence on other characteristics.</abstract><oa>free_for_read</oa></addata></record> |
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| language | eng |
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| subjects | ADHESIVES CHEMICAL PAINT OR INK REMOVERS CHEMISTRY COATING COMPOSITIONS, e.g. PAINTS, VARNISHES ORLACQUERS CORRECTING FLUIDS DYES FILLING PASTES INFORMATION STORAGE INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORDCARRIER AND TRANSDUCER INKS METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS PAINTS PASTES OR SOLIDS FOR COLOURING OR PRINTING PHYSICS POLISHES USE OF MATERIALS THEREFOR WOODSTAINS |
| title | MAGNETIC RECORDING MEDIUM |
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