JPS6456713A - Production of block copolymer - Google Patents

Production of block copolymer

Info

Publication number
JPS6456713A
JPS6456713A JP21271687A JP21271687A JPS6456713A JP S6456713 A JPS6456713 A JP S6456713A JP 21271687 A JP21271687 A JP 21271687A JP 21271687 A JP21271687 A JP 21271687A JP S6456713 A JPS6456713 A JP S6456713A
Authority
JP
Japan
Prior art keywords
copolymer
water
solvent
content
vinyl aromatic
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
JP21271687A
Other languages
Japanese (ja)
Other versions
JPH0360844B2 (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 JP21271687A priority Critical patent/JPS6456713A/en
Publication of JPS6456713A publication Critical patent/JPS6456713A/en
Publication of JPH0360844B2 publication Critical patent/JPH0360844B2/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 in the presence of a nonionic surfactant. CONSTITUTION:A copolymerization is carried out in a hydrogen 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 1-3,000ppm of a nonionic surfactant 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 slurry where the crumb-like copolymer has been dispersed in water 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.%.
JP21271687A 1987-08-28 1987-08-28 Production of block copolymer Granted JPS6456713A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21271687A JPS6456713A (en) 1987-08-28 1987-08-28 Production of block copolymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21271687A JPS6456713A (en) 1987-08-28 1987-08-28 Production of block copolymer

Publications (2)

Publication Number Publication Date
JPS6456713A true JPS6456713A (en) 1989-03-03
JPH0360844B2 JPH0360844B2 (en) 1991-09-18

Family

ID=16627245

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21271687A Granted JPS6456713A (en) 1987-08-28 1987-08-28 Production of block copolymer

Country Status (1)

Country Link
JP (1) JPS6456713A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5171791A (en) * 1989-03-13 1992-12-15 The Dow Chemical Company Anionic polymerization process
US5242961A (en) * 1992-05-28 1993-09-07 Shell Oil Company Color prevention in titanium catalyzed hydrogenated diene polymers
JP2017008245A (en) * 2015-06-24 2017-01-12 日本エラストマー株式会社 Manufacturing method of purified polymer
JP2017119756A (en) * 2015-12-28 2017-07-06 日本ゼオン株式会社 Method of producing polymer

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089494A (en) * 1973-12-13 1975-07-17
JPS5137987A (en) * 1974-09-27 1976-03-30 Sumitomo Chemical Co BUROTSUKUKYO JUGOTAIRYUSHINO SHUTOKUHOHO

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5089494A (en) * 1973-12-13 1975-07-17
JPS5137987A (en) * 1974-09-27 1976-03-30 Sumitomo Chemical Co BUROTSUKUKYO JUGOTAIRYUSHINO SHUTOKUHOHO

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5171791A (en) * 1989-03-13 1992-12-15 The Dow Chemical Company Anionic polymerization process
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
JP2017008245A (en) * 2015-06-24 2017-01-12 日本エラストマー株式会社 Manufacturing method of purified polymer
JP2017119756A (en) * 2015-12-28 2017-07-06 日本ゼオン株式会社 Method of producing polymer

Also Published As

Publication number Publication date
JPH0360844B2 (en) 1991-09-18

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Legal Events

Date Code Title Description
EXPY Cancellation because of completion of term