GB710697A - Manufacture of polymers in granular or globular form - Google Patents

Manufacture of polymers in granular or globular form

Info

Publication number
GB710697A
GB710697A GB2459/51A GB245951A GB710697A GB 710697 A GB710697 A GB 710697A GB 2459/51 A GB2459/51 A GB 2459/51A GB 245951 A GB245951 A GB 245951A GB 710697 A GB710697 A GB 710697A
Authority
GB
United Kingdom
Prior art keywords
emulsifying agent
amount
chloride
hydrogen peroxide
acetic acid
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.)
Expired
Application number
GB2459/51A
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.)
Hoechst AG
Original Assignee
Hoechst AG
Farbwerke Hoechst AG
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 Hoechst AG, Farbwerke Hoechst AG filed Critical Hoechst AG
Publication of GB710697A publication Critical patent/GB710697A/en
Expired legal-status Critical Current

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)

Abstract

Granular polymers or copolymers of vinyl chloride are produced by polymerizing in an aqueous medium in the presence of an activating substance, an emulsifying agent, and a water-soluble calcium salt which does not cause substantial precipitation of the emulsifying agent, the calcium salt, preferably calcium chloride, being present in an amount such that the polymer neither coagulates into lumps nor is obtained to any substantial extent in the form of a stable dispersion and which amount does not exceed 0.14 per cent. calculated on the weight of the aqueous phase. Examples describe the preparation of polyvinyl chloride and of a vinyl chloride-vinyl acetate copolymer. The activating substance may be hydrogen peroxide or a redox system such as hydrogen peroxide and sodium formaldehyde sulphoxylate and the emulsifying agent may be an alkali metal or ammonium salt of an alkyl sulphonate or of an alkyl sulphonamido-acetic acid. A small amount of acetic acid may be added to render the solution neutral or very slightly acid.
GB2459/51A 1950-02-10 1951-01-31 Manufacture of polymers in granular or globular form Expired GB710697A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE710697X 1950-02-10

Publications (1)

Publication Number Publication Date
GB710697A true GB710697A (en) 1954-06-16

Family

ID=6619247

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2459/51A Expired GB710697A (en) 1950-02-10 1951-01-31 Manufacture of polymers in granular or globular form

Country Status (2)

Country Link
GB (1) GB710697A (en)
NL (1) NL78731C (en)

Also Published As

Publication number Publication date
NL78731C (en) 1955-08-15

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