JPS57195718A - Production of propylene block copolymer - Google Patents

Production of propylene block copolymer

Info

Publication number
JPS57195718A
JPS57195718A JP8111081A JP8111081A JPS57195718A JP S57195718 A JPS57195718 A JP S57195718A JP 8111081 A JP8111081 A JP 8111081A JP 8111081 A JP8111081 A JP 8111081A JP S57195718 A JPS57195718 A JP S57195718A
Authority
JP
Japan
Prior art keywords
tank
polypropylene
catalytic component
solid catalytic
charged
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
JP8111081A
Other languages
Japanese (ja)
Other versions
JPS6138926B2 (en
Inventor
Tadashi Asanuma
Ichiro Fujikage
Shinryu Uchikawa
Tetsunosuke Shiomura
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.)
Mitsui Toatsu Chemicals Inc
Original Assignee
Mitsui Toatsu Chemicals Inc
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 Mitsui Toatsu Chemicals Inc filed Critical Mitsui Toatsu Chemicals Inc
Priority to JP8111081A priority Critical patent/JPS57195718A/en
Publication of JPS57195718A publication Critical patent/JPS57195718A/en
Publication of JPS6138926B2 publication Critical patent/JPS6138926B2/ja
Granted legal-status Critical Current

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  • Polymerisation Methods In General (AREA)
  • Graft Or Block Polymers (AREA)

Abstract

PURPOSE: To obtain a copolymer excellent in impact resistance and rigidity, by forming a specified amount of polypropylene during a period of time during which the 1st reaction tank is not charged with the solid catalytic component of a stereoregular polymerization catalyst and the polypropylene slurry is not discharged to the 2nd reaction tank.
CONSTITUTION: In a process for continuously producing a propylene block copolymer by carrying out a multistage polymerization by using a stereoregular polymerization catalyst and two or more polymerization tanks, the 1st tank only is intermittently charged with the solid catalytic component of the stereoregular polymerization catalyst and the polypropylene slurry is intermittently discharged from the 1st tank to the 2nd tank, whereby 5W50wt% of the total weight of the polypropylene formed per unit solid catalytic component is formed during a period of time during which the 1st tank is not charged with the solid catalytic component and the polypropylene slurry is not discharged to the 2nd tank. The monomer used consists mainly of propylene and may further contain, as comonomers, ethylene or butene-1 and further an extremely small amount of 4C or higher α-olefin.
COPYRIGHT: (C)1982,JPO&Japio
JP8111081A 1981-05-29 1981-05-29 Production of propylene block copolymer Granted JPS57195718A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8111081A JPS57195718A (en) 1981-05-29 1981-05-29 Production of propylene block copolymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8111081A JPS57195718A (en) 1981-05-29 1981-05-29 Production of propylene block copolymer

Publications (2)

Publication Number Publication Date
JPS57195718A true JPS57195718A (en) 1982-12-01
JPS6138926B2 JPS6138926B2 (en) 1986-09-01

Family

ID=13737234

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8111081A Granted JPS57195718A (en) 1981-05-29 1981-05-29 Production of propylene block copolymer

Country Status (1)

Country Link
JP (1) JPS57195718A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829811A (en) * 1981-08-13 1983-02-22 Mitsubishi Chem Ind Ltd Continuous production of propylene/ethylene block copolymer
EP0225099A2 (en) * 1985-11-15 1987-06-10 Chisso Corporation Process for continuously producing a propylene-ethylene block copolymer
EP0678373A2 (en) 1989-04-07 1995-10-25 Chisso Corporation Dulled stretched molding and process for producing the same
US5854355A (en) * 1995-04-24 1998-12-29 Chisso Corporation Continuous process for preparation of highly rigid propylene-ethylene block copolymers

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5829811A (en) * 1981-08-13 1983-02-22 Mitsubishi Chem Ind Ltd Continuous production of propylene/ethylene block copolymer
EP0225099A2 (en) * 1985-11-15 1987-06-10 Chisso Corporation Process for continuously producing a propylene-ethylene block copolymer
EP0678373A2 (en) 1989-04-07 1995-10-25 Chisso Corporation Dulled stretched molding and process for producing the same
US5854355A (en) * 1995-04-24 1998-12-29 Chisso Corporation Continuous process for preparation of highly rigid propylene-ethylene block copolymers

Also Published As

Publication number Publication date
JPS6138926B2 (en) 1986-09-01

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