GB587455A - Improvements relating to the production of polymerised vinyl products - Google Patents

Improvements relating to the production of polymerised vinyl products

Info

Publication number
GB587455A
GB587455A GB817544A GB817544A GB587455A GB 587455 A GB587455 A GB 587455A GB 817544 A GB817544 A GB 817544A GB 817544 A GB817544 A GB 817544A GB 587455 A GB587455 A GB 587455A
Authority
GB
United Kingdom
Prior art keywords
oxygen
vinyl
free
dispersion
sulphur dioxide
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
GB817544A
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.)
A Boake Roberts and Co Ltd
Original Assignee
A Boake Roberts and Co Ltd
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 A Boake Roberts and Co Ltd filed Critical A Boake Roberts and Co Ltd
Priority to GB817544A priority Critical patent/GB587455A/en
Publication of GB587455A publication Critical patent/GB587455A/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
    • C08F4/00—Polymerisation catalysts
    • 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
    • C08F36/00—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds
    • C08F36/02—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds
    • C08F36/04—Homopolymers and copolymers of compounds having one or more unsaturated aliphatic radicals, at least one having two or more carbon-to-carbon double bonds the radical having only two carbon-to-carbon double bonds conjugated

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerization Catalysts (AREA)

Abstract

Vinyl compounds are polymerized or copolymerized in aqueous dispersion in the presence of (a) free or combined sulphur dioxide dissolved in the aqueous medium and oxidizable by free oxygen therein; (b) oxygen acting to oxidize the sulphur dioxide, and (c) a substance acting to catalyse the oxidation and thereby promote the polymerization. Vinyl compounds specified are methyl methacrylate, acrylonitrile, vinyl acetate, vinyl chloride, vinyl ethers, butadiene, styrene and its homologues and vinyl naphthalene and its homologues. The forms of free or combined sulphur dioxide may be those described in Specifications 582,134 and 582,327. The oxygen may be introduced into the dispersion indirectly, by way of a vapour space, e.g. using nitrogen containing 0.1 per cent of oxygen; or directly by the use of a preformed aqueous solution of oxygen or air, by nascent oxygen produced electrolytically, by chemical action between the free or combined sulphur dioxide and hydrogen peroxide, ethyl benzene peroxide, benzoyl peroxide or tetrahydro-naphthalene peroxide or a water-soluble salt of copper, manganese, iron or cobalt in the - ic state, which also possesses the property of catalysing the oxidation. This salt may be present as an impurity in any of the components of the dispersion. Emulsifying agents, e.g. sodium, potassium or ammonium soaps, or lauryl sulphate and protective colloids, e.g. gelatine, methyl cellulose, polyvinyl alcohol, saponin or gum arabic may be present. The process is preferably conducted by adding the vinyl compound at a controlled rate to the rest of the components of the dispersion with stirring.
GB817544A 1944-08-25 1944-08-25 Improvements relating to the production of polymerised vinyl products Expired GB587455A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB817544A GB587455A (en) 1944-08-25 1944-08-25 Improvements relating to the production of polymerised vinyl products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB817544A GB587455A (en) 1944-08-25 1944-08-25 Improvements relating to the production of polymerised vinyl products

Publications (1)

Publication Number Publication Date
GB587455A true GB587455A (en) 1947-04-25

Family

ID=9847262

Family Applications (1)

Application Number Title Priority Date Filing Date
GB817544A Expired GB587455A (en) 1944-08-25 1944-08-25 Improvements relating to the production of polymerised vinyl products

Country Status (1)

Country Link
GB (1) GB587455A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061240A2 (en) * 1981-03-20 1982-09-29 Minnesota Mining And Manufacturing Company Dentin and enamel adhesive

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0061240A2 (en) * 1981-03-20 1982-09-29 Minnesota Mining And Manufacturing Company Dentin and enamel adhesive
EP0061240A3 (en) * 1981-03-20 1983-07-13 Minnesota Mining And Manufacturing Company Dentin and enamel adhesive

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