JPS55123637A - Extruded sheet of polypropylene - Google Patents

Extruded sheet of polypropylene

Info

Publication number
JPS55123637A
JPS55123637A JP3089079A JP3089079A JPS55123637A JP S55123637 A JPS55123637 A JP S55123637A JP 3089079 A JP3089079 A JP 3089079A JP 3089079 A JP3089079 A JP 3089079A JP S55123637 A JPS55123637 A JP S55123637A
Authority
JP
Japan
Prior art keywords
molecular weight
component
polypropylene
intrinsic viscosity
free
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
JP3089079A
Other languages
Japanese (ja)
Other versions
JPH0112770B2 (en
Inventor
Minoru Taka
Shinichi Inoue
Ryuichi Samejima
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 JP3089079A priority Critical patent/JPS55123637A/en
Publication of JPS55123637A publication Critical patent/JPS55123637A/en
Publication of JPH0112770B2 publication Critical patent/JPH0112770B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: Title sheet that is made from polypropylene with high melt elasticity containing two components different in average molecualar weight, which is produced by two-step polymerization under different conditions in the same polymerization system, thus being free from surface roughening, and showing high-transparency and high thermal processability.
CONSTITUTION: For example, in the polymerization of propylene with Ziegler-Natta catalyst, the concentration of the molecular weight controller is changed in two steps to produce a propylene polymer consisting of 60W99.5wt% of low molecular wight component of less than 4.0dl/g intrinsic viscosity and 0.5W40wt% of high molecular weight component of twice or higher intrisic viscosity than the above component and having 2.0dl/g or higher intrinsic viscosity as a whole. The resulting polymer only or a copolymer thereof with other α-olefin is melt extruded. Since the dispersion of high molecular weight portions is good, the sheets resulting from extrusion are fish-eye free and shows good appearance.
COPYRIGHT: (C)1980,JPO&Japio
JP3089079A 1979-03-15 1979-03-15 Extruded sheet of polypropylene Granted JPS55123637A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3089079A JPS55123637A (en) 1979-03-15 1979-03-15 Extruded sheet of polypropylene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3089079A JPS55123637A (en) 1979-03-15 1979-03-15 Extruded sheet of polypropylene

Publications (2)

Publication Number Publication Date
JPS55123637A true JPS55123637A (en) 1980-09-24
JPH0112770B2 JPH0112770B2 (en) 1989-03-02

Family

ID=12316311

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3089079A Granted JPS55123637A (en) 1979-03-15 1979-03-15 Extruded sheet of polypropylene

Country Status (1)

Country Link
JP (1) JPS55123637A (en)

Cited By (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5638309A (en) * 1979-09-07 1981-04-13 Mitsui Toatsu Chem Inc Propylene copolymer for forming film
JPS57185336A (en) * 1981-05-11 1982-11-15 Mitsubishi Chem Ind Ltd Polypropylene composition
JPS57185304A (en) * 1981-05-11 1982-11-15 Mitsubishi Chem Ind Ltd Preparation of propylene polymer
JPS57187337A (en) * 1981-05-13 1982-11-18 Mitsubishi Chem Ind Ltd Polypropylene composition
JPS587439A (en) * 1981-07-06 1983-01-17 Mitsubishi Chem Ind Ltd Polypropylene composition
JPS5827731A (en) * 1981-08-12 1983-02-18 Mitsubishi Chem Ind Ltd Polyolefin composition and its preparation
US4950720A (en) * 1988-04-29 1990-08-21 Exxon Chemical Patents Inc. Modified polypropylene, process for making and article made from the same
US4970280A (en) * 1987-04-01 1990-11-13 Chisso Corporation Continuous process for producing high molten viscoelastic polypropylene or ethylene-propylene copolymer
US4981938A (en) * 1987-02-04 1991-01-01 Chisso Corporation Highly crystalline polypropylene
US5140062A (en) * 1987-04-01 1992-08-18 Chisso Corporation Continuous process for producing high molten viscoelastic polypropylene of ethylene-propylene copolymer
KR19980017267A (en) * 1996-08-30 1998-06-05 백영배 Method for producing polypropylene elastomer
US6110986A (en) * 1997-12-11 2000-08-29 Sumitomo Chemical Company, Limited Propylene-based polymer composition and foamed article thereof
US6153710A (en) * 1997-02-18 2000-11-28 Chisso Corporation Preactivated catalyst for olefin (CO)polymer, catalyst for olefin (CO)polymerization, olefin (CO)polymer composition, and process for producing the same
US6231804B1 (en) 1997-04-02 2001-05-15 Chisso Corporation Modified olefin (co)polymer composition, process for preparing the same, and modified olefin (co)polymer composition molding
US6235845B1 (en) 1997-08-07 2001-05-22 Chisso Corporation Olefin (co)polymer composition
US6303696B1 (en) 1997-04-11 2001-10-16 Chisso Corporation Propylene (co)polymer composition using metallocene catalyst
US6313225B2 (en) 1995-10-18 2001-11-06 Chisso Corporation Catalyst for olefin (co-)polymerization and method for producing the same
US6437048B1 (en) 1995-12-01 2002-08-20 Chisso Corporation Molded resin articles
JP2008508372A (en) * 2004-07-30 2008-03-21 サウディ ベーシック インダストリーズ コーポレイション High transparency propylene copolymer composition
JP2008274031A (en) * 2007-04-26 2008-11-13 Sumitomo Chemical Co Ltd Antistatic resin composition and thermoplastic resin multilayered sheet

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006057254A1 (en) * 2004-11-25 2006-06-01 Asahi Kasei Chemicals Corporation Resin composition suitable for forming sheet

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219788A (en) * 1975-08-05 1977-02-15 Stamicarbon Method and apparatus for polymerizing alphaaalkene
JPS5391954A (en) * 1977-01-24 1978-08-12 Tokuyama Soda Co Ltd Method of extrusion molding of polypropylene
JPS5439487A (en) * 1977-09-05 1979-03-26 Showa Denko Kk Preparation of propylene copolymer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5219788A (en) * 1975-08-05 1977-02-15 Stamicarbon Method and apparatus for polymerizing alphaaalkene
JPS5391954A (en) * 1977-01-24 1978-08-12 Tokuyama Soda Co Ltd Method of extrusion molding of polypropylene
JPS5439487A (en) * 1977-09-05 1979-03-26 Showa Denko Kk Preparation of propylene copolymer

Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5638309A (en) * 1979-09-07 1981-04-13 Mitsui Toatsu Chem Inc Propylene copolymer for forming film
JPH0113487B2 (en) * 1979-09-07 1989-03-07 Mitsui Toatsu Chemicals
JPS57185336A (en) * 1981-05-11 1982-11-15 Mitsubishi Chem Ind Ltd Polypropylene composition
JPS57185304A (en) * 1981-05-11 1982-11-15 Mitsubishi Chem Ind Ltd Preparation of propylene polymer
JPH0348214B2 (en) * 1981-05-11 1991-07-23 Mitsubishi Chem Ind
JPS6354741B2 (en) * 1981-05-13 1988-10-31 Mitsubishi Chem Ind
JPS57187337A (en) * 1981-05-13 1982-11-18 Mitsubishi Chem Ind Ltd Polypropylene composition
JPS587439A (en) * 1981-07-06 1983-01-17 Mitsubishi Chem Ind Ltd Polypropylene composition
JPH0148939B2 (en) * 1981-08-12 1989-10-23 Mitsubishi Chem Ind
JPS5827731A (en) * 1981-08-12 1983-02-18 Mitsubishi Chem Ind Ltd Polyolefin composition and its preparation
US4981938A (en) * 1987-02-04 1991-01-01 Chisso Corporation Highly crystalline polypropylene
US4970280A (en) * 1987-04-01 1990-11-13 Chisso Corporation Continuous process for producing high molten viscoelastic polypropylene or ethylene-propylene copolymer
US5140062A (en) * 1987-04-01 1992-08-18 Chisso Corporation Continuous process for producing high molten viscoelastic polypropylene of ethylene-propylene copolymer
US4950720A (en) * 1988-04-29 1990-08-21 Exxon Chemical Patents Inc. Modified polypropylene, process for making and article made from the same
US6313225B2 (en) 1995-10-18 2001-11-06 Chisso Corporation Catalyst for olefin (co-)polymerization and method for producing the same
US6437048B1 (en) 1995-12-01 2002-08-20 Chisso Corporation Molded resin articles
KR19980017267A (en) * 1996-08-30 1998-06-05 백영배 Method for producing polypropylene elastomer
US6153710A (en) * 1997-02-18 2000-11-28 Chisso Corporation Preactivated catalyst for olefin (CO)polymer, catalyst for olefin (CO)polymerization, olefin (CO)polymer composition, and process for producing the same
US6231804B1 (en) 1997-04-02 2001-05-15 Chisso Corporation Modified olefin (co)polymer composition, process for preparing the same, and modified olefin (co)polymer composition molding
US6303696B1 (en) 1997-04-11 2001-10-16 Chisso Corporation Propylene (co)polymer composition using metallocene catalyst
US6235845B1 (en) 1997-08-07 2001-05-22 Chisso Corporation Olefin (co)polymer composition
US6110986A (en) * 1997-12-11 2000-08-29 Sumitomo Chemical Company, Limited Propylene-based polymer composition and foamed article thereof
DE19856851B4 (en) * 1997-12-11 2011-02-24 Sumitomo Chemical Co. Ltd. Polymer composition based on propylene and foam body thereof
JP2008508372A (en) * 2004-07-30 2008-03-21 サウディ ベーシック インダストリーズ コーポレイション High transparency propylene copolymer composition
JP2008274031A (en) * 2007-04-26 2008-11-13 Sumitomo Chemical Co Ltd Antistatic resin composition and thermoplastic resin multilayered sheet

Also Published As

Publication number Publication date
JPH0112770B2 (en) 1989-03-02

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