POLYPROPYLENE PROTECTIVE FILM
PROBLEM TO BE SOLVED: To provide an easily peelable polypropylene protective film reduced in the bleeding of a low-mol.wt. substance, excellent in bonding strength and tear strength and suitable for the protection of the surface of a metal. SOLUTION: A multilayered film has a three-layered structure...
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| creator | KUGIMIYA YOICHI AKITAYA SHINICHI HIROSE TAKETO HATTORI TAKAYUKI |
| description | PROBLEM TO BE SOLVED: To provide an easily peelable polypropylene protective film reduced in the bleeding of a low-mol.wt. substance, excellent in bonding strength and tear strength and suitable for the protection of the surface of a metal. SOLUTION: A multilayered film has a three-layered structure of (B)/(A)/(B) and each of respective layers comprises a compsn. consisting of a polypropylene homopolymer (PP) and an ethylene/propylene copolymer (RC). Herein, the (A)- layer comprises a compsn. (a) of a crystalline PP and an amorphous RC and is characterized by [η]RC=1.7-2.8 dl/g; [η]RC/[η]PP=0.7-1.2; ([η]RC/[η]PP)×(WPP/ WRC)=1.0-3.0, ethylene content of amorphous RC=25-55 wt.% and 'WRC-A'=22-40 wt.% and the (B)-layer comprises a compsn. (b) satisfying that 'WRC-B' is 0.5 |
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SOLUTION: A multilayered film has a three-layered structure of (B)/(A)/(B) and each of respective layers comprises a compsn. consisting of a polypropylene homopolymer (PP) and an ethylene/propylene copolymer (RC). Herein, the (A)- layer comprises a compsn. (a) of a crystalline PP and an amorphous RC and is characterized by [η]RC=1.7-2.8 dl/g; [η]RC/[η]PP=0.7-1.2; ([η]RC/[η]PP)×(WPP/ WRC)=1.0-3.0, ethylene content of amorphous RC=25-55 wt.% and 'WRC-A'=22-40 wt.% and the (B)-layer comprises a compsn. (b) satisfying that 'WRC-B' is 0.5<'WRC-B'/'WRC-A'<1.0 wherein [η]RC and WRC are each the intrinsic viscosity of the amorphous RC and the wt. thereof, [η]PP and WPP are each the intrinsic viscosity of the crystalline PP and the wt. thereof and 'WRC-A' and 'WRC-B' are each the wt.% of the amorphous RC to the compositions (a), (b)}.</description><edition>7</edition><language>eng</language><subject>CHEMISTRY ; COMPOSITIONS BASED THEREON ; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS ; LAYERED PRODUCTS ; LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM ; METALLURGY ; ORGANIC MACROMOLECULAR COMPOUNDS ; PERFORMING OPERATIONS ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; TRANSPORTING</subject><creationdate>2000</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=20000620&DB=EPODOC&CC=JP&NR=2000168006A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76419</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20000620&DB=EPODOC&CC=JP&NR=2000168006A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>KUGIMIYA YOICHI</creatorcontrib><creatorcontrib>AKITAYA SHINICHI</creatorcontrib><creatorcontrib>HIROSE TAKETO</creatorcontrib><creatorcontrib>HATTORI TAKAYUKI</creatorcontrib><title>POLYPROPYLENE PROTECTIVE FILM</title><description>PROBLEM TO BE SOLVED: To provide an easily peelable polypropylene protective film reduced in the bleeding of a low-mol.wt. substance, excellent in bonding strength and tear strength and suitable for the protection of the surface of a metal. SOLUTION: A multilayered film has a three-layered structure of (B)/(A)/(B) and each of respective layers comprises a compsn. consisting of a polypropylene homopolymer (PP) and an ethylene/propylene copolymer (RC). Herein, the (A)- layer comprises a compsn. (a) of a crystalline PP and an amorphous RC and is characterized by [η]RC=1.7-2.8 dl/g; [η]RC/[η]PP=0.7-1.2; ([η]RC/[η]PP)×(WPP/ WRC)=1.0-3.0, ethylene content of amorphous RC=25-55 wt.% and 'WRC-A'=22-40 wt.% and the (B)-layer comprises a compsn. (b) satisfying that 'WRC-B' is 0.5<'WRC-B'/'WRC-A'<1.0 wherein [η]RC and WRC are each the intrinsic viscosity of the amorphous RC and the wt. thereof, [η]PP and WPP are each the intrinsic viscosity of the crystalline PP and the wt. thereof and 'WRC-A' and 'WRC-B' are each the wt.% of the amorphous RC to the compositions (a), (b)}.</description><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</subject><subject>LAYERED PRODUCTS</subject><subject>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</subject><subject>METALLURGY</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>PERFORMING OPERATIONS</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>TRANSPORTING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2000</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZJAN8PeJDAjyD4j0cfVzVQCyQlydQzzDXBXcPH18eRhY0xJzilN5oTQ3g5Kba4izh25qQX58anFBYnJqXmpJvFeAkYGBgaGZhYGBmaMxUYoA_dQh1Q</recordid><startdate>20000620</startdate><enddate>20000620</enddate><creator>KUGIMIYA YOICHI</creator><creator>AKITAYA SHINICHI</creator><creator>HIROSE TAKETO</creator><creator>HATTORI TAKAYUKI</creator><scope>EVB</scope></search><sort><creationdate>20000620</creationdate><title>POLYPROPYLENE PROTECTIVE FILM</title><author>KUGIMIYA YOICHI ; AKITAYA SHINICHI ; HIROSE TAKETO ; HATTORI TAKAYUKI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2000168006A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2000</creationdate><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>COMPOSITIONS OF MACROMOLECULAR COMPOUNDS</topic><topic>LAYERED PRODUCTS</topic><topic>LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM</topic><topic>METALLURGY</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>PERFORMING OPERATIONS</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>TRANSPORTING</topic><toplevel>online_resources</toplevel><creatorcontrib>KUGIMIYA YOICHI</creatorcontrib><creatorcontrib>AKITAYA SHINICHI</creatorcontrib><creatorcontrib>HIROSE TAKETO</creatorcontrib><creatorcontrib>HATTORI TAKAYUKI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>KUGIMIYA YOICHI</au><au>AKITAYA SHINICHI</au><au>HIROSE TAKETO</au><au>HATTORI TAKAYUKI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>POLYPROPYLENE PROTECTIVE FILM</title><date>2000-06-20</date><risdate>2000</risdate><abstract>PROBLEM TO BE SOLVED: To provide an easily peelable polypropylene protective film reduced in the bleeding of a low-mol.wt. substance, excellent in bonding strength and tear strength and suitable for the protection of the surface of a metal. SOLUTION: A multilayered film has a three-layered structure of (B)/(A)/(B) and each of respective layers comprises a compsn. consisting of a polypropylene homopolymer (PP) and an ethylene/propylene copolymer (RC). Herein, the (A)- layer comprises a compsn. (a) of a crystalline PP and an amorphous RC and is characterized by [η]RC=1.7-2.8 dl/g; [η]RC/[η]PP=0.7-1.2; ([η]RC/[η]PP)×(WPP/ WRC)=1.0-3.0, ethylene content of amorphous RC=25-55 wt.% and 'WRC-A'=22-40 wt.% and the (B)-layer comprises a compsn. (b) satisfying that 'WRC-B' is 0.5<'WRC-B'/'WRC-A'<1.0 wherein [η]RC and WRC are each the intrinsic viscosity of the amorphous RC and the wt. thereof, [η]PP and WPP are each the intrinsic viscosity of the crystalline PP and the wt. thereof and 'WRC-A' and 'WRC-B' are each the wt.% of the amorphous RC to the compositions (a), (b)}.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record> |
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| subjects | CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS THEIR PREPARATION OR CHEMICAL WORKING-UP TRANSPORTING |
| title | POLYPROPYLENE PROTECTIVE FILM |
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