GB638572A - The pearl polymerization of vinyl compounds - Google Patents

The pearl polymerization of vinyl compounds

Info

Publication number
GB638572A
GB638572A GB20608/47A GB2060847A GB638572A GB 638572 A GB638572 A GB 638572A GB 20608/47 A GB20608/47 A GB 20608/47A GB 2060847 A GB2060847 A GB 2060847A GB 638572 A GB638572 A GB 638572A
Authority
GB
United Kingdom
Prior art keywords
vinyl compounds
monomer
polymerization
tricalcium phosphate
vinyl
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
GB20608/47A
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.)
WALTER PETER HOHENSTEIN
Original Assignee
WALTER PETER HOHENSTEIN
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 WALTER PETER HOHENSTEIN filed Critical WALTER PETER HOHENSTEIN
Publication of GB638572A publication Critical patent/GB638572A/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
    • C08F2/18—Suspension polymerisation
    • 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

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)

Abstract

Granular products are obtained by polymerization of monomeric vinyl compounds in aqueous suspension in presence of finely-divided tricalcium phosphate. The suspension is maintained during polymerization by agitation, e.g. stirring, without the addition of any dispersing or emulsifying agent. Preferably, the ratio of monomer to water is not higher than 1 : 1, a desirable ratio being 1 : 10. The amount of tricalcium phosphate may be as low as 0.1 per cent by weight of the monomer. Specified monomeric vinyl compounds are methyl and ethyl acrylates and methacrylates, styrene, dichlorostyrenes and vinyl acetate. The process is also applicable to the production of copolymers, e.g. of vinyl chloride and vinyl acetate.
GB20608/47A 1946-01-17 1947-07-30 The pearl polymerization of vinyl compounds Expired GB638572A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US638572XA 1946-01-17 1946-01-17

Publications (1)

Publication Number Publication Date
GB638572A true GB638572A (en) 1950-06-14

Family

ID=22051972

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20608/47A Expired GB638572A (en) 1946-01-17 1947-07-30 The pearl polymerization of vinyl compounds

Country Status (1)

Country Link
GB (1) GB638572A (en)

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