JPS54124041A - Preparation of improved liquid cis-1, 4-polyisoprene rubber emulsion - Google Patents

Preparation of improved liquid cis-1, 4-polyisoprene rubber emulsion

Info

Publication number
JPS54124041A
JPS54124041A JP3209178A JP3209178A JPS54124041A JP S54124041 A JPS54124041 A JP S54124041A JP 3209178 A JP3209178 A JP 3209178A JP 3209178 A JP3209178 A JP 3209178A JP S54124041 A JPS54124041 A JP S54124041A
Authority
JP
Japan
Prior art keywords
polyisoprene rubber
cis
liquid cis
preparation
improved liquid
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.)
Pending
Application number
JP3209178A
Other languages
Japanese (ja)
Inventor
Koji Hirai
Naotake Kono
Takayuki Okamura
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.)
Kuraray Co Ltd
Original Assignee
Kuraray 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 Kuraray Co Ltd filed Critical Kuraray Co Ltd
Priority to JP3209178A priority Critical patent/JPS54124041A/en
Publication of JPS54124041A publication Critical patent/JPS54124041A/en
Pending legal-status Critical Current

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  • Processes Of Treating Macromolecular Substances (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE: To obtain an emulsion having small particle diameters, improved stability, adhesiveness, heat and resistance, by emulsifying a liquid cis-1, 4-polyisoprene rubber having a relatively high molecular weight wherein carboxyl groups are previously introduced.
CONSTITUTION: A) A liquid cis-1, 4- polyisoprene rubber with a viscosity average molecular weight 10,000W60,000, preferably 20,000W40,000, e.g., one having not less than 75 wt.% of cis-l, 4-bond obtained by an anionic polymerization, is reacted with B) a carboxylation agent selected from the group consisting of a carboxylic compound shown by the formula (R1 and R2 are H, CH3)(1, etc.; R3 is H, CH3 is H, CH3, C2H5, etc.; R4 is CH3, C2H5, C3H7, etc.) or its derivative in a ratio of numbers of carboxylation agent to isoprene monomer in the isoprene rubber of 0.03W30;100, preferably 0.05W10; 100 by addition reaction to be emulsified.
COPYRIGHT: (C)1979,JPO&Japio
JP3209178A 1978-03-20 1978-03-20 Preparation of improved liquid cis-1, 4-polyisoprene rubber emulsion Pending JPS54124041A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3209178A JPS54124041A (en) 1978-03-20 1978-03-20 Preparation of improved liquid cis-1, 4-polyisoprene rubber emulsion

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3209178A JPS54124041A (en) 1978-03-20 1978-03-20 Preparation of improved liquid cis-1, 4-polyisoprene rubber emulsion

Publications (1)

Publication Number Publication Date
JPS54124041A true JPS54124041A (en) 1979-09-26

Family

ID=12349200

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3209178A Pending JPS54124041A (en) 1978-03-20 1978-03-20 Preparation of improved liquid cis-1, 4-polyisoprene rubber emulsion

Country Status (1)

Country Link
JP (1) JPS54124041A (en)

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