JPS56163104A - Production of vinyl chloride polymer - Google Patents

Production of vinyl chloride polymer

Info

Publication number
JPS56163104A
JPS56163104A JP3512281A JP3512281A JPS56163104A JP S56163104 A JPS56163104 A JP S56163104A JP 3512281 A JP3512281 A JP 3512281A JP 3512281 A JP3512281 A JP 3512281A JP S56163104 A JPS56163104 A JP S56163104A
Authority
JP
Japan
Prior art keywords
dispersant
gelatin
polymer
vinyl chloride
production
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
JP3512281A
Other languages
Japanese (ja)
Other versions
JPH0127099B2 (en
Inventor
Hiroshi Isekawa
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.)
Mitsubishi Kasei Polytec Co
Original Assignee
Mitsubishi Monsanto Chemical Co
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 Mitsubishi Monsanto Chemical Co filed Critical Mitsubishi Monsanto Chemical Co
Priority to JP3512281A priority Critical patent/JPS56163104A/en
Publication of JPS56163104A publication Critical patent/JPS56163104A/en
Publication of JPH0127099B2 publication Critical patent/JPH0127099B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Compositions Of Macromolecular Compounds (AREA)
  • Polymerisation Methods In General (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

PURPOSE: To obtain titled polymer excellent in heat resistance etc., by using as a dispersant a combination of a gelatin dispersant and polyvinylpyrrolidone and removing the gelatin dispersant from the polymer surfaces, in the production of a vinyl chloride polymer.
CONSTITUTION: In suspension-polymerizing vinyl chloride or its mixture with a monomer copolymerizable therewith, e.g., ethylene, propylene, there is used, as a dispersant for the polymerization system, a combination of (A) about 0.1W3pts.wt. gelatin dispersant, e.g., acid-treated gelatin, and (B) about 0.1W3pts.wt., polyvinllpyrrolidone or 0.01W3pts.wt. partially saponified polyvinyl acetate per 100pts.wt. monomer. Then, the produced polymer is reacted with a proteolytic enzyme, e.g., trypsin, urochinase, to remove the gelatin dispersant on the polymer surfaces. This improves the absorptivity for plasticizers and the mechanical properties after processing.
COPYRIGHT: (C)1981,JPO&Japio
JP3512281A 1981-03-11 1981-03-11 Production of vinyl chloride polymer Granted JPS56163104A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3512281A JPS56163104A (en) 1981-03-11 1981-03-11 Production of vinyl chloride polymer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3512281A JPS56163104A (en) 1981-03-11 1981-03-11 Production of vinyl chloride polymer

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
JP16109879A Division JPS56103202A (en) 1979-12-12 1979-12-12 Preparation of vinyl polymer

Publications (2)

Publication Number Publication Date
JPS56163104A true JPS56163104A (en) 1981-12-15
JPH0127099B2 JPH0127099B2 (en) 1989-05-26

Family

ID=12433119

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3512281A Granted JPS56163104A (en) 1981-03-11 1981-03-11 Production of vinyl chloride polymer

Country Status (1)

Country Link
JP (1) JPS56163104A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54161098A (en) * 1978-05-25 1979-12-20 Kawaguchi Kinzoku Kogyo Kk Link insulation cap
JPS5623612A (en) * 1979-08-06 1981-03-06 Toshiyuki Kawahara Compression returning device for drain

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54161098A (en) * 1978-05-25 1979-12-20 Kawaguchi Kinzoku Kogyo Kk Link insulation cap
JPS5623612A (en) * 1979-08-06 1981-03-06 Toshiyuki Kawahara Compression returning device for drain

Also Published As

Publication number Publication date
JPH0127099B2 (en) 1989-05-26

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