JPS6456712A - Production of block copolymer - Google Patents

Production of block copolymer

Info

Publication number
JPS6456712A
JPS6456712A JP21271587A JP21271587A JPS6456712A JP S6456712 A JPS6456712 A JP S6456712A JP 21271587 A JP21271587 A JP 21271587A JP 21271587 A JP21271587 A JP 21271587A JP S6456712 A JPS6456712 A JP S6456712A
Authority
JP
Japan
Prior art keywords
copolymer
vinyl aromatic
content
aromatic hydrocarbon
water
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
JP21271587A
Other languages
Japanese (ja)
Other versions
JPH0360843B2 (en
Inventor
Toshinori Shiraki
Susumu Hoshi
Noriyuki Honda
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.)
Asahi Chemical Industry Co Ltd
Original Assignee
Asahi Chemical Industry 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 Asahi Chemical Industry Co Ltd filed Critical Asahi Chemical Industry Co Ltd
Priority to JP21271587A priority Critical patent/JPS6456712A/en
Publication of JPS6456712A publication Critical patent/JPS6456712A/en
Publication of JPH0360843B2 publication Critical patent/JPH0360843B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Graft Or Block Polymers (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE:To obtain the titled copolymer of low Li content, outstanding in transparency and devitrification resistance, by copolymerization, in a hydrocarbon solvent, between a conjugated diene and vinyl aromatic hydrocarbon using an organolithium compound as the initiator followed by stripping the resultant product together with a phosphoric ester etc. CONSTITUTION:A copolymerization is carried out in a hydrocarbon solvent, between a conjugated diene and vinyl aromatic hydrocarbon using an organolithium compound as the initiator followed by adding at least one kind of terminator selected from water, alcohols, inorganic acids and organic acids and a stabilizer to a solution of the resulting block copolymer or hydrogenated product therefrom. Thence, a solution of the copolymer with a concentration of 10-60wt.% is subjected to steam stripping, in the presence of 0.1-1,000ppm of a phosphoric ester such as polyoxyalkylene alkyl ether phosphate and/or alkali metal salt therefrom, at temperatures higher than the boiling point of the hydrocarbon solvent or azeotropic temperature of said solvent plus water but <=120 deg.C to convert into a crumb-like slurry followed by dehydration to the water content of 1-30wt.% and then drying to the water content of <1wt.%, thus obtaining the objective copolymer with the Li residue of <=40ppm and the vinyl aromatic hydrocarbon content of 5-95wt.%.
JP21271587A 1987-08-28 1987-08-28 Production of block copolymer Granted JPS6456712A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21271587A JPS6456712A (en) 1987-08-28 1987-08-28 Production of block copolymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21271587A JPS6456712A (en) 1987-08-28 1987-08-28 Production of block copolymer

Publications (2)

Publication Number Publication Date
JPS6456712A true JPS6456712A (en) 1989-03-03
JPH0360843B2 JPH0360843B2 (en) 1991-09-18

Family

ID=16627227

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21271587A Granted JPS6456712A (en) 1987-08-28 1987-08-28 Production of block copolymer

Country Status (1)

Country Link
JP (1) JPS6456712A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04175305A (en) * 1990-07-31 1992-06-23 Asahi Chem Ind Co Ltd Recovery of block polymer
US5242961A (en) * 1992-05-28 1993-09-07 Shell Oil Company Color prevention in titanium catalyzed hydrogenated diene polymers
EP0731111A3 (en) * 1995-03-06 1996-11-06 Kuraray Co Microporous crumbs of hydrogenated block copolymers and process for producing the same
WO2006088160A1 (en) * 2005-02-18 2006-08-24 Jsr Corporation Method of polymer recovery and polymer
WO2014112411A1 (en) * 2013-01-16 2014-07-24 旭化成ケミカルズ株式会社 Method for producing polymer
WO2020203811A1 (en) * 2019-04-04 2020-10-08 日本ゼオン株式会社 Polymer solution desolvation method

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089494A (en) * 1973-12-13 1975-07-17

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089494A (en) * 1973-12-13 1975-07-17

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04175305A (en) * 1990-07-31 1992-06-23 Asahi Chem Ind Co Ltd Recovery of block polymer
US5242961A (en) * 1992-05-28 1993-09-07 Shell Oil Company Color prevention in titanium catalyzed hydrogenated diene polymers
US5280058A (en) * 1992-05-28 1994-01-18 Shell Oil Company Color prevention in titanium catalyzed hydrogenated diene polymers
US5280059A (en) * 1992-05-28 1994-01-18 Shell Oil Company Color prevention in titanium catalyzed hydrogenated diene polymers
EP0731111A3 (en) * 1995-03-06 1996-11-06 Kuraray Co Microporous crumbs of hydrogenated block copolymers and process for producing the same
WO2006088160A1 (en) * 2005-02-18 2006-08-24 Jsr Corporation Method of polymer recovery and polymer
JP5186920B2 (en) * 2005-02-18 2013-04-24 Ｊｓｒ株式会社 Polymer recovery method and polymer
WO2014112411A1 (en) * 2013-01-16 2014-07-24 旭化成ケミカルズ株式会社 Method for producing polymer
JPWO2014112411A1 (en) * 2013-01-16 2017-01-19 旭化成株式会社 Method for producing polymer
US9738742B2 (en) 2013-01-16 2017-08-22 Asahi Kasei Chemicals Corporation Method for producing polymer
EA029804B1 (en) * 2013-01-16 2018-05-31 Асахи Касеи Кемикалз Корпорейшн Method for producing polymer
WO2020203811A1 (en) * 2019-04-04 2020-10-08 日本ゼオン株式会社 Polymer solution desolvation method

Also Published As

Publication number Publication date
JPH0360843B2 (en) 1991-09-18

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term