JPS56149415A - Production of propylene block copolymer - Google Patents

Production of propylene block copolymer

Info

Publication number
JPS56149415A
JPS56149415A JP5345080A JP5345080A JPS56149415A JP S56149415 A JPS56149415 A JP S56149415A JP 5345080 A JP5345080 A JP 5345080A JP 5345080 A JP5345080 A JP 5345080A JP S56149415 A JPS56149415 A JP S56149415A
Authority
JP
Japan
Prior art keywords
copolymer
propylene
block copolymer
propylene block
production
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
JP5345080A
Other languages
Japanese (ja)
Other versions
JPS5745764B2 (en
Inventor
Kazuo Baba
Shozo Kawamata
Yoshiharu Fukui
Seiichiro Kon
Tatsuya Miyatake
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 JP5345080A priority Critical patent/JPS56149415A/en
Priority to GB8111834A priority patent/GB2075993B/en
Priority to US06/255,005 priority patent/US4433110A/en
Publication of JPS56149415A publication Critical patent/JPS56149415A/en
Publication of JPS5745764B2 publication Critical patent/JPS5745764B2/ja
Granted legal-status Critical Current

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  • Graft Or Block Polymers (AREA)

Abstract

PURPOSE: To economically produce titled copolymer excellent in hot tack, heat seal, transparency, etc., by subjecting propylene and other α-olefins to multistage polymerization under a specified condition.
CONSTITUTION: In a process for producing a propylene block copolymer by using a Ziegler-Natta type catalyst; in the first stage copolymerization, 60W98wt% propylene and 2W40% C4W8 α-olefin are copolymerized to form a copolymer in an amount corresponding to 20W90wt% of that of the final product copolymer, and then in the second stage copolymerization, 90W99wt% propylene and 1W10wt% ethylene are copolymerized to form a copolymer in an amount corresponding to 80W10wt% of that of the final product copolymer.
COPYRIGHT: (C)1981,JPO&Japio
JP5345080A 1980-04-21 1980-04-21 Production of propylene block copolymer Granted JPS56149415A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP5345080A JPS56149415A (en) 1980-04-21 1980-04-21 Production of propylene block copolymer
GB8111834A GB2075993B (en) 1980-04-21 1981-04-14 Catalytic process for producing propylene block copolymers
US06/255,005 US4433110A (en) 1980-04-21 1981-04-17 Process for producing propylene block copolymers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5345080A JPS56149415A (en) 1980-04-21 1980-04-21 Production of propylene block copolymer

Publications (2)

Publication Number Publication Date
JPS56149415A true JPS56149415A (en) 1981-11-19
JPS5745764B2 JPS5745764B2 (en) 1982-09-29

Family

ID=12943184

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5345080A Granted JPS56149415A (en) 1980-04-21 1980-04-21 Production of propylene block copolymer

Country Status (1)

Country Link
JP (1) JPS56149415A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010535863A (en) * 2007-08-03 2010-11-25 バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ Propylene terpolymer production method
JP2016524626A (en) * 2013-06-11 2016-08-18 バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ Propylene-based terpolymer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010535863A (en) * 2007-08-03 2010-11-25 バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ Propylene terpolymer production method
JP2016524626A (en) * 2013-06-11 2016-08-18 バーゼル・ポリオレフィン・イタリア・ソチエタ・ア・レスポンサビリタ・リミタータ Propylene-based terpolymer

Also Published As

Publication number Publication date
JPS5745764B2 (en) 1982-09-29

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