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JPS6454016A - Recovery of polymer - Google Patents

Recovery of polymer

Info

Publication number
JPS6454016A
JPS6454016A JP21020787A JP21020787A JPS6454016A JP S6454016 A JPS6454016 A JP S6454016A JP 21020787 A JP21020787 A JP 21020787A JP 21020787 A JP21020787 A JP 21020787A JP S6454016 A JPS6454016 A JP S6454016A
Authority
JP
Japan
Prior art keywords
polymer
hydrogenated
solution
water
shortstop
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
JP21020787A
Other languages
Japanese (ja)
Other versions
JPH0554845B2 (en
Inventor
Toshinori Shiraki
Yasuro Hattori
Satoru Osawa
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 JP21020787A priority Critical patent/JPS6454016A/en
Publication of JPS6454016A publication Critical patent/JPS6454016A/en
Publication of JPH0554845B2 publication Critical patent/JPH0554845B2/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 a polymer excellent in hue, transparency, and resistances to loss of transparency and thermal discoloration, by adding a shortstop and a stabilizer to a specified (hydrogenated) polymer solution, and further adding CO2 thereto in at least one step selected from among steps of solvent removal, dehydration and drying. CONSTITUTION:A conjugated diene (A) and/or a vinylaromatic hydrocarbon (B) is polymerized in the presence of an initiator (C) comprising an organolithium compound in a hydrocarbon solvent (D) to obtain a solution of a (hydrogenated) polymer. After at least one mol., per mol. of component C, of at least one shortstop (E) selected from among water, an alcohol, an inorganic acid and an organic acid and a stabilizer (F) are added to this solution, component D is removed by steam stripping to obtain a slurry in which polymer crumbs are dispersed in water. A (hydrogenated) polymer of a water content <1wt.% is obtained by drying the (hydrogenated) polymer crumbs of a water content of 1-30wt.%, obtained by dehydrating the above slurry, 0.01pt.wt., per 100pts.wt. polymer, CO2 is added in at least one step selected from said solvent removal and subsequent steps to obtain a (hydrogenated) polymer of a residual Li content <=40ppm.
JP21020787A 1987-08-26 1987-08-26 Recovery of polymer Granted JPS6454016A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21020787A JPS6454016A (en) 1987-08-26 1987-08-26 Recovery of polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21020787A JPS6454016A (en) 1987-08-26 1987-08-26 Recovery of polymer

Publications (2)

Publication Number Publication Date
JPS6454016A true JPS6454016A (en) 1989-03-01
JPH0554845B2 JPH0554845B2 (en) 1993-08-13

Family

ID=16585565

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21020787A Granted JPS6454016A (en) 1987-08-26 1987-08-26 Recovery of polymer

Country Status (1)

Country Link
JP (1) JPS6454016A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01294721A (en) * 1988-01-21 1989-11-28 Mitsubishi Kasei Corp Material for forming optical disc base
JPH02305814A (en) * 1989-05-19 1990-12-19 Japan Synthetic Rubber Co Ltd Hydrogenated diene copolymer and its composition
JPH0372512A (en) * 1989-05-19 1991-03-27 Japan Synthetic Rubber Co Ltd Hydrogenated diene copolymer, modified hydrogenated diene copolymer and composition containing the same
JPH04175305A (en) * 1990-07-31 1992-06-23 Asahi Chem Ind Co Ltd Recovery of block polymer
BE1003945A3 (en) * 1990-10-04 1992-07-22 Fina Research Bleaching process of polymer resineux vinylaromatic diene-type conjugate.
WO2006054525A1 (en) * 2004-11-19 2006-05-26 Jsr Corporation Method of drying wet polymer
JP5076500B2 (en) * 2004-06-25 2012-11-21 日本ゼオン株式会社 Conjugated diene polymer cyclized product and process for producing the same
WO2014112411A1 (en) * 2013-01-16 2014-07-24 旭化成ケミカルズ株式会社 Method for producing polymer

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0349281A (en) * 1989-07-17 1991-03-04 Sumitomo Electric Ind Ltd Semiconductor laser element

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0349281A (en) * 1989-07-17 1991-03-04 Sumitomo Electric Ind Ltd Semiconductor laser element

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01294721A (en) * 1988-01-21 1989-11-28 Mitsubishi Kasei Corp Material for forming optical disc base
JPH02305814A (en) * 1989-05-19 1990-12-19 Japan Synthetic Rubber Co Ltd Hydrogenated diene copolymer and its composition
JPH0372512A (en) * 1989-05-19 1991-03-27 Japan Synthetic Rubber Co Ltd Hydrogenated diene copolymer, modified hydrogenated diene copolymer and composition containing the same
JPH04175305A (en) * 1990-07-31 1992-06-23 Asahi Chem Ind Co Ltd Recovery of block polymer
BE1003945A3 (en) * 1990-10-04 1992-07-22 Fina Research Bleaching process of polymer resineux vinylaromatic diene-type conjugate.
JP5076500B2 (en) * 2004-06-25 2012-11-21 日本ゼオン株式会社 Conjugated diene polymer cyclized product and process for producing the same
JPWO2006054525A1 (en) * 2004-11-19 2008-05-29 Jsr株式会社 Method for drying water-containing polymer
WO2006054525A1 (en) * 2004-11-19 2006-05-26 Jsr Corporation Method of drying wet 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
CN104918968A (en) * 2013-01-16 2015-09-16 旭化成化学株式会社 Method for producing polymer
US20150353669A1 (en) * 2013-01-16 2015-12-10 Asahi Kasei Chemicals Corporation 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

Also Published As

Publication number Publication date
JPH0554845B2 (en) 1993-08-13

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