JPS54144448A - Extrusion-coating resin composition - Google Patents

Extrusion-coating resin composition

Info

Publication number
JPS54144448A
JPS54144448A JP5305278A JP5305278A JPS54144448A JP S54144448 A JPS54144448 A JP S54144448A JP 5305278 A JP5305278 A JP 5305278A JP 5305278 A JP5305278 A JP 5305278A JP S54144448 A JPS54144448 A JP S54144448A
Authority
JP
Japan
Prior art keywords
polypropylene
intrinsic viscosity
polymer
extrusion
less
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP5305278A
Other languages
Japanese (ja)
Other versions
JPS5846139B2 (en
Inventor
Minoru Taka
Tadanori Inoue
Toshiaki Shioda
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Chemical Co Ltd
Original Assignee
Sumitomo Chemical Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sumitomo Chemical Co Ltd filed Critical Sumitomo Chemical Co Ltd
Priority to JP5305278A priority Critical patent/JPS5846139B2/en
Publication of JPS54144448A publication Critical patent/JPS54144448A/en
Publication of JPS5846139B2 publication Critical patent/JPS5846139B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Laminated Bodies (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

PURPOSE: Specific polypropylene resins with molecular weights different from each other are blended to produce title composition with a specific intrinsic viscosity, thus giving laminate products with high heat-sealing strength, high toughness and good transparency.
CONSTITUTION: (A) 70W95, preferably 60W90 wt% of a polypropylene with an intrinsic viscosity of less than 1.8 dl/g, preferably 1.5 dl/g or less, and (B) 5W30, preferably 10W20 wt% of a polypropylene with an intrinsic viscosity 3W5, preferably 3.5W 4.5 times that of polymer (A), and (C) 0W30wt% of a polypropylene with an intrinsic viscosity lying between those of (A) and (B) are mixed to form a composition with an intrinsic viscosity of 1.2W2, preferably 1.3W1.8 dl/g. Said polymer is prepared by polymerizing or copolymerizing propylene using a Ziegler- Natta catalyst in the same polymerization system, wherein the concentration of hydrogen is changed in multistages to alter the molecular weight of polypropylene.
COPYRIGHT: (C)1979,JPO&Japio
JP5305278A 1978-05-02 1978-05-02 Resin composition for extrusion coating Expired JPS5846139B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5305278A JPS5846139B2 (en) 1978-05-02 1978-05-02 Resin composition for extrusion coating

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5305278A JPS5846139B2 (en) 1978-05-02 1978-05-02 Resin composition for extrusion coating

Publications (2)

Publication Number Publication Date
JPS54144448A true JPS54144448A (en) 1979-11-10
JPS5846139B2 JPS5846139B2 (en) 1983-10-14

Family

ID=12932082

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5305278A Expired JPS5846139B2 (en) 1978-05-02 1978-05-02 Resin composition for extrusion coating

Country Status (1)

Country Link
JP (1) JPS5846139B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187337A (en) * 1981-05-13 1982-11-18 Mitsubishi Chem Ind Ltd Polypropylene composition
JPS6031938A (en) * 1983-07-29 1985-02-18 Keiwa Shoko Kk High-density polyethylene extrusion laminating method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57187337A (en) * 1981-05-13 1982-11-18 Mitsubishi Chem Ind Ltd Polypropylene composition
JPS6354741B2 (en) * 1981-05-13 1988-10-31 Mitsubishi Chem Ind
JPS6031938A (en) * 1983-07-29 1985-02-18 Keiwa Shoko Kk High-density polyethylene extrusion laminating method

Also Published As

Publication number Publication date
JPS5846139B2 (en) 1983-10-14

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