BE780418A - Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls - Google Patents

Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls

Info

Publication number
BE780418A
BE780418A BE780418A BE780418A BE780418A BE 780418 A BE780418 A BE 780418A BE 780418 A BE780418 A BE 780418A BE 780418 A BE780418 A BE 780418A BE 780418 A BE780418 A BE 780418A
Authority
BE
Belgium
Prior art keywords
aqs
phase
vinyl chloride
alkaline
polymer
Prior art date
Application number
BE780418A
Other languages
French (fr)
Original Assignee
Shinetsu 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
Priority to CH274872A priority Critical patent/CH567530A5/en
Priority to AT165572A priority patent/AT328179B/en
Priority to AU39741/72A priority patent/AU464627B2/en
Application filed by Shinetsu Chemical Co filed Critical Shinetsu Chemical Co
Priority to BE780418A priority patent/BE780418A/en
Priority to FR7209135A priority patent/FR2175615A1/en
Publication of BE780418A publication Critical patent/BE780418A/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
    • C08F14/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a halogen
    • C08F14/02—Monomers containing chlorine
    • C08F14/04—Monomers containing two carbon atoms
    • C08F14/06—Vinyl chloride

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

Suspension polymerisation of vinyl chloride mixed with a smaller amount of another monomer, is effected in an aqs. medium contg. a small amount of a suspension agent and a polymsn. initiator, a small amount of an alkaline substance being added to the polymsn. medium before the intiation of polymsn., or before the degree of conversion reaches 30%, so that the pH value of the aqs. phase is >=8.
BE780418A 1972-02-25 1972-03-09 Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls BE780418A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
CH274872A CH567530A5 (en) 1972-02-25 1972-02-25 Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls
AT165572A AT328179B (en) 1972-02-25 1972-02-29 METHOD OF PREPARING VINYL CHLORIDE POLYMERS
AU39741/72A AU464627B2 (en) 1972-02-25 1972-03-08 Method for suspension-polymerizing vinyl chloride
BE780418A BE780418A (en) 1972-02-25 1972-03-09 Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls
FR7209135A FR2175615A1 (en) 1972-02-25 1972-03-16 Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
CH274872A CH567530A5 (en) 1972-02-25 1972-02-25 Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls
AT165572A AT328179B (en) 1972-02-25 1972-02-29 METHOD OF PREPARING VINYL CHLORIDE POLYMERS
AU39741/72A AU464627B2 (en) 1972-02-25 1972-03-08 Method for suspension-polymerizing vinyl chloride
BE780418A BE780418A (en) 1972-02-25 1972-03-09 Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls
FR7209135A FR2175615A1 (en) 1972-02-25 1972-03-16 Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls

Publications (1)

Publication Number Publication Date
BE780418A true BE780418A (en) 1972-09-11

Family

ID=61628491

Family Applications (1)

Application Number Title Priority Date Filing Date
BE780418A BE780418A (en) 1972-02-25 1972-03-09 Vinyl chloride suspension polymn - using alkaline aqs phase to prevent deposition of polymer on reactor walls

Country Status (5)

Country Link
AT (1) AT328179B (en)
AU (1) AU464627B2 (en)
BE (1) BE780418A (en)
CH (1) CH567530A5 (en)
FR (1) FR2175615A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4359560A (en) * 1978-06-13 1982-11-16 Air Products And Chemicals, Inc. Method for reducing wall fouling in vinyl chloride polymerization
NO855126L (en) * 1985-01-07 1986-07-08 Dow Chemical Co CO-SUSPENDING AID SYSTEM FOR USE BY POLYMERIZATION OF ETHYLENIC Saturated MONOMERS.
DE68928351T2 (en) * 1988-11-30 1998-04-09 Mita Industrial Co Ltd Methods of making polymer particles, methods of making "toner" particles, and particles made by this method

Also Published As

Publication number Publication date
ATA165572A (en) 1975-05-15
AU3974172A (en) 1973-09-13
AT328179B (en) 1976-03-10
CH567530A5 (en) 1975-10-15
AU464627B2 (en) 1975-09-04
FR2175615B1 (en) 1974-12-13
FR2175615A1 (en) 1973-10-26

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