JPS5438389A - Preparation of highly crystalline polyolefin - Google Patents

Preparation of highly crystalline polyolefin

Info

Publication number
JPS5438389A
JPS5438389A JP10547177A JP10547177A JPS5438389A JP S5438389 A JPS5438389 A JP S5438389A JP 10547177 A JP10547177 A JP 10547177A JP 10547177 A JP10547177 A JP 10547177A JP S5438389 A JPS5438389 A JP S5438389A
Authority
JP
Japan
Prior art keywords
highly crystalline
crystalline polyolefin
preparation
ziegle
stages
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.)
Pending
Application number
JP10547177A
Other languages
Japanese (ja)
Inventor
Akinobu Shiga
Noriyoshi Matsuyama
Taisuke Okita
Masahiro Kakugo
Takatoshi Suzuki
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 JP10547177A priority Critical patent/JPS5438389A/en
Publication of JPS5438389A publication Critical patent/JPS5438389A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To prepare a highly crystalline polyolefin having improved elastic properties in melting, by polymerizing propylene in the presence of a Ziegle-Natta catalyst and a molecular weight modifier with different concentrations in two stages.
COPYRIGHT: (C)1979,JPO&Japio
JP10547177A 1977-09-01 1977-09-01 Preparation of highly crystalline polyolefin Pending JPS5438389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10547177A JPS5438389A (en) 1977-09-01 1977-09-01 Preparation of highly crystalline polyolefin

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10547177A JPS5438389A (en) 1977-09-01 1977-09-01 Preparation of highly crystalline polyolefin

Publications (1)

Publication Number Publication Date
JPS5438389A true JPS5438389A (en) 1979-03-22

Family

ID=14408497

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10547177A Pending JPS5438389A (en) 1977-09-01 1977-09-01 Preparation of highly crystalline polyolefin

Country Status (1)

Country Link
JP (1) JPS5438389A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118906A (en) * 1979-03-08 1980-09-12 Sumitomo Chem Co Ltd Polypropylene having high melt elasticity
US4499247A (en) * 1982-06-15 1985-02-12 Chisso Corporation High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same
US4950720A (en) * 1988-04-29 1990-08-21 Exxon Chemical Patents Inc. Modified polypropylene, process for making and article made from the same
US6362298B2 (en) * 1996-02-22 2002-03-26 Basell Polypropylen Gmbh High-molecular-weight polypropylene having a broad molecular-weight distribution

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55118906A (en) * 1979-03-08 1980-09-12 Sumitomo Chem Co Ltd Polypropylene having high melt elasticity
US4499247A (en) * 1982-06-15 1985-02-12 Chisso Corporation High-rigidity, high-melt-viscoelasticity polypropylene and process for producing the same
US4950720A (en) * 1988-04-29 1990-08-21 Exxon Chemical Patents Inc. Modified polypropylene, process for making and article made from the same
US6362298B2 (en) * 1996-02-22 2002-03-26 Basell Polypropylen Gmbh High-molecular-weight polypropylene having a broad molecular-weight distribution

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