GB619513A - Process for the manufacture of aqueous dispersions of polymers of substances capable of polymerisation - Google Patents

Process for the manufacture of aqueous dispersions of polymers of substances capable of polymerisation

Info

Publication number
GB619513A
GB619513A GB10469/46A GB1046946A GB619513A GB 619513 A GB619513 A GB 619513A GB 10469/46 A GB10469/46 A GB 10469/46A GB 1046946 A GB1046946 A GB 1046946A GB 619513 A GB619513 A GB 619513A
Authority
GB
United Kingdom
Prior art keywords
concentration
polymerization
monomer
polymerized
added
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
GB10469/46A
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.)
Bataafsche Petroleum Maatschappij NV
Original Assignee
Bataafsche Petroleum Maatschappij NV
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 Bataafsche Petroleum Maatschappij NV filed Critical Bataafsche Petroleum Maatschappij NV
Publication of GB619513A publication Critical patent/GB619513A/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
    • C08F2/00—Processes of polymerisation
    • C08F2/12—Polymerisation in non-solvents
    • C08F2/16—Aqueous medium
    • C08F2/22—Emulsion polymerisation

Landscapes

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

Abstract

In the polymerization of polymerizable substances in aqueous emulsion, fresh quantities of monomer, at a concentration higher than the monomer concentration in the emulsion, are added such that the monomer concentration is kept below that equivalent to the maximum concentration of polymer at which deposition just does not occur and above half of this concentration. The polymerization may be carried out by the batch or continuous method and is stopped before the polymer concentration reaches the deposition value. At the beginning of the polymerization the monomer concentration may be below the lower limit provided this is exceeded at the end of the induction period. The process is applicable to the copolymerization of two or more polymerizable substances provided all components are added to the system as monomers. Specified substances which may be polymerized by the process are vinyl chloride, vinyl acetate, styrene, acrylic and methacrylic acid esters, acrylonitrile, vinylidene chloride, maleic acid esters, isobutene and butadiene. In examples, vinyl chloride is polymerized in aqueous emulsion in the presence of cetyl sulphate, hydrogen peroxide and sulphuric acid. Specification 578,584 is referred to.
GB10469/46A 1942-10-24 1946-04-04 Process for the manufacture of aqueous dispersions of polymers of substances capable of polymerisation Expired GB619513A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL619513X 1942-10-24

Publications (1)

Publication Number Publication Date
GB619513A true GB619513A (en) 1949-03-10

Family

ID=19788393

Family Applications (1)

Application Number Title Priority Date Filing Date
GB10469/46A Expired GB619513A (en) 1942-10-24 1946-04-04 Process for the manufacture of aqueous dispersions of polymers of substances capable of polymerisation

Country Status (1)

Country Link
GB (1) GB619513A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936358C (en) * 1949-11-03 1955-12-07 Basf Ag Process for polymerizing acrylonitrile
FR2568255A1 (en) * 1984-07-30 1986-01-31 Japan Exlan Co Ltd Acrylonitrile polymer of high molecular mass and process for its manufacture

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE936358C (en) * 1949-11-03 1955-12-07 Basf Ag Process for polymerizing acrylonitrile
FR2568255A1 (en) * 1984-07-30 1986-01-31 Japan Exlan Co Ltd Acrylonitrile polymer of high molecular mass and process for its manufacture

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