JPS5481389A - Preparation of 1,2-polybutadiene - Google Patents

Preparation of 1,2-polybutadiene

Info

Publication number
JPS5481389A
JPS5481389A JP14874777A JP14874777A JPS5481389A JP S5481389 A JPS5481389 A JP S5481389A JP 14874777 A JP14874777 A JP 14874777A JP 14874777 A JP14874777 A JP 14874777A JP S5481389 A JPS5481389 A JP S5481389A
Authority
JP
Japan
Prior art keywords
polybutadiene
butadiene
aryl group
phosphorus compound
electron donative
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
JP14874777A
Other languages
Japanese (ja)
Other versions
JPS6131125B2 (en
Inventor
Tsuichi Shimokawa
Noboru Ooshima
Toshiaki Fukuhori
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.)
JSR Corp
Original Assignee
Japan Synthetic Rubber 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 Japan Synthetic Rubber Co Ltd filed Critical Japan Synthetic Rubber Co Ltd
Priority to JP14874777A priority Critical patent/JPS5481389A/en
Publication of JPS5481389A publication Critical patent/JPS5481389A/en
Publication of JPS6131125B2 publication Critical patent/JPS6131125B2/ja
Granted legal-status Critical Current

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  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Transition And Organic Metals Composition Catalysts For Addition Polymerization (AREA)

Abstract

PURPOSE: To obtain a polybutadiene with a high 1,2-bond content, having a high modulus and improved heat insulating properties, by polymerizing 1,3-butadiene in the presence of a specific catalyst continuously or stepwise at different temperatures.
CONSTITUTION: 1,3-butadiene is polymerized in the presence of a catalyst, prepared by incorporating (A) a complex of a cobalt salt and an electron donative phosphorus compound of formula CoX2L2 (X is acid residue; L is electron donative phosphorus compound having an aryl group) with (B) an organoaluminum compound of formula AlR3 (R is alkyl or aryl group), e.g. trimethylaluminum, etc. and (C) 0.25W1.5 moles per mole of component (B) of water, in a (halogenated) hydrocarbon solvent, e.g. n-pentane, etc. while changing the polymerization temperature continuously or stewise to form 1,2-polybutadiene. The temperature difference between the early and later stages of polymerization is preferably 10W 70°C.
COPYRIGHT: (C)1979,JPO&Japio
JP14874777A 1977-12-13 1977-12-13 Preparation of 1,2-polybutadiene Granted JPS5481389A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14874777A JPS5481389A (en) 1977-12-13 1977-12-13 Preparation of 1,2-polybutadiene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14874777A JPS5481389A (en) 1977-12-13 1977-12-13 Preparation of 1,2-polybutadiene

Publications (2)

Publication Number Publication Date
JPS5481389A true JPS5481389A (en) 1979-06-28
JPS6131125B2 JPS6131125B2 (en) 1986-07-18

Family

ID=15459710

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14874777A Granted JPS5481389A (en) 1977-12-13 1977-12-13 Preparation of 1,2-polybutadiene

Country Status (1)

Country Link
JP (1) JPS5481389A (en)

Also Published As

Publication number Publication date
JPS6131125B2 (en) 1986-07-18

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