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    • 4. 发明专利
    • DE69433256T2
    • 2004-08-26
    • DE69433256
    • 1994-07-07
    • SUMITOMO CHEMICAL CO
    • KIMURA JUNICHIWAKAMATSU KAZUKIUSUI MASAHITOSATOH MAKOTO
    • B32B27/32C08L23/10C08L23/16
    • A polypropylene laminate film comprises a crystalline polypropylene layer having laminated on at least one surface thereof a copolymer which is a random copolymer of propylene, ethylene, and an alpha -olefin having at least 4 carbon atoms. The copolymer is obtained by vapor-phase polymerization using a catalyst system comprising (A) a solid catalyst component containing magnesium, titanium and a halogen, (B) an organoaluminum compound, and (C) an electron donative compound in substantially the absence of a liquid medium. The copolymer satisfies the following requirements: (1) ethylene content of 3.0 - 7.0 wt%, (2) alpha -olefin content of 2.0 - 6.0 wt%, (3) ethylene alpha -olefin ratio of at least 1.0, (4) melt flow rate of 10 g/10 minutes or less, (5) ratio of weight average molecular weight: number average molecular weight ratio of 4.5 or less, (6) mp of 135 DEG C or less, and (7) n-hexane-soluble components less than 5.5 wt% The film has excellent low-temperature heat-sealing and hot tack properties, good transparency, and good blocking and solvent resistance.
    • 9. 发明专利
    • Polypropylene laminate film
    • SG44690A1
    • 1997-12-19
    • SG1996005656
    • 1994-07-07
    • SUMITOMO CHEMICAL CO
    • KIMURA JUNICHIWAKAMATSU KAZUKISATOH MAKOTO
    • B32B27/32C08L23/10C08L23/16
    • A polypropylene laminate film comprises a crystalline polypropylene layer having laminated on at least one surface thereof a copolymer which is a random copolymer of propylene, ethylene, and an alpha -olefin having at least 4 carbon atoms. The copolymer is obtained by vapor-phase polymerization using a catalyst system comprising (A) a solid catalyst component containing magnesium, titanium and a halogen, (B) an organoaluminum compound, and (C) an electron donative compound in substantially the absence of a liquid medium. The copolymer satisfies the following requirements: (1) ethylene content of 3.0 - 7.0 wt%, (2) alpha -olefin content of 2.0 - 6.0 wt%, (3) ethylene alpha -olefin ratio of at least 1.0, (4) melt flow rate of 10 g/10 minutes or less, (5) ratio of weight average molecular weight: number average molecular weight ratio of 4.5 or less, (6) mp of 135 DEG C or less, and (7) n-hexane-soluble components less than 5.5 wt% The film has excellent low-temperature heat-sealing and hot tack properties, good transparency, and good blocking and solvent resistance.
    • 10. 发明专利
    • PROCESS FOR PRODUCING MODIFIED PARTICLE, CARRIER OR CATALYST COMPONENT FOR ADDITION POLYMERIZATION, PRE-POLYMERIZED CATALYST COMPONENT THEREFOR, CATALYST THEREFOR, AND ADDITION POLYMER
    • SG131120A1
    • 2007-04-26
    • SG2007019144
    • 2004-08-30
    • SUMITOMO CHEMICAL CO
    • OSHIMA HIDEKISATOH MAKOTO
    • C08F4/659C08F4/6592C08F10/00C08F210/16
    • Production of modified particles, a carrier or a catalyst component for addition polymerization involves preparing a product by contacting a Group 13 element compound (I) (e.g. trialkyl aluminum) with a Group 15 or 16 element compound (II) (e.g. alcohol), then contacting the product with a Group 15 or 16 element compound (III) (e.g. water) in presence of particles. Production of modified particles, a carrier or a catalyst component for addition polymerization involves preparing a product by contacting a Group 13 element compound of formula M 1>(L 1>) 3(I) with a Group 15 or 16 element compound of formula (R 1>) t-TH (II), then contacting the product with a Group 15 or 16 element compound of formula (R 2>) t-2-TH 2(III) in presence of particles. M 1>Group 13 element; L 1>H, hydrocarbyl or halo; R 1>electron withdrawing residue or group containing an electron withdrawing residue; R 2>optionally halogenated hydrocarbyl; T : non-metallic Group 15 or 16 element; and t : valency of T (i.e. 2 or 3). Independent claims are included for: (1) the preparation of an addition polymerization catalyst (APC1), by contacting modified particles (A) obtained by the above process with a transition metal compound (B) and optionally an organo-aluminum compound (C); (2) the preparation of a prepolymerized catalyst component (PPCC) or catalyst (PPC) for addition polymerization, by preparing a primary catalyst by contacting (A) with (B) and optionally (C), then prepolymerizing an olefin in presence of the primary catalyst; (3) the preparation of an addition polymerization catalyst (APC2), by contacting the above PPCC with (C); and (4) the production of an addition polymer, by polymerization of appropriate monomer(s) in presence of APC1, APC2 or PPC as catalyst.