GB659771A - The pearl polymerisation of unsaturated organic compounds - Google Patents

The pearl polymerisation of unsaturated organic compounds

Info

Publication number
GB659771A
GB659771A GB717/49A GB71749A GB659771A GB 659771 A GB659771 A GB 659771A GB 717/49 A GB717/49 A GB 717/49A GB 71749 A GB71749 A GB 71749A GB 659771 A GB659771 A GB 659771A
Authority
GB
United Kingdom
Prior art keywords
organic compounds
phosphate
calcium phosphate
unsaturated organic
polymerization
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
GB717/49A
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.)
PETROCARBON Ltd
WALTER PETER HOHENSTEIN
Original Assignee
PETROCARBON Ltd
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 PETROCARBON Ltd, WALTER PETER HOHENSTEIN filed Critical PETROCARBON Ltd
Publication of GB659771A publication Critical patent/GB659771A/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
    • 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
    • C08F12/00—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 an aromatic carbocyclic ring
    • C08F12/02—Monomers containing only one unsaturated aliphatic radical
    • C08F12/04—Monomers containing only one unsaturated aliphatic radical containing one ring
    • C08F12/06—Hydrocarbons
    • C08F12/08—Styrene
    • 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

Abstract

In a process for the pearl polymerization of one or more organic compounds containing the CH2=C< group, e.g. styrene, methyl methacrylate, vinyl acetate, acrylonitrile or mixtures thereof, in aqueous suspension, finely-divided particles of calcium phosphate having a CaO/P2O5 ratio of at least 1.35 are present as a suspension stabilizer. A catalyst soluble in the monomer, e.g. benzoyl peroxide, is normally present and the phosphate may be added during the polymerization. The pearls are finally washed with dilute acid, water and dried. Specification 638,572 is referred to.ALSO:Calcium phosphate, prepared by precipitation with (1) phosphoric acid from a hot, dilute, aqueous suspension of lime, or (2) tri-sodium phosphate from a hot, aqueous solution of calcium chloride maintained at a pH of 8-9 by addition of ammonia, or (3) by heating lime and water at 250 DEG C. with calcium phosphate, in an autoclave, is used as a stabilizer for the pearl polymerization of unsaturated organic compounds.
GB717/49A 1949-01-11 1949-01-11 The pearl polymerisation of unsaturated organic compounds Expired GB659771A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB283434X 1949-01-11

Publications (1)

Publication Number Publication Date
GB659771A true GB659771A (en) 1951-10-24

Family

ID=10274177

Family Applications (1)

Application Number Title Priority Date Filing Date
GB717/49A Expired GB659771A (en) 1949-01-11 1949-01-11 The pearl polymerisation of unsaturated organic compounds

Country Status (6)

Country Link
BE (1) BE493149A (en)
CH (1) CH283434A (en)
DE (1) DE946922C (en)
FR (1) FR1007545A (en)
GB (1) GB659771A (en)
NL (1) NL72810C (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715118A (en) * 1951-09-19 1955-08-09 Koppers Co Inc Suspension polymerization using synthetic calcium phosphate
DE1091755B (en) * 1958-04-30 1960-10-27 Styrene Products Ltd Process for the polymerization of vinyl aromatic compounds
US3032540A (en) * 1958-05-20 1962-05-01 Union Carbide Corp Method for improving the color-stability of acrylonitrile-styrene copolymer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2638839A1 (en) * 1976-08-28 1978-03-02 Basf Ag PROCESS FOR THE PRODUCTION OF STYRENE SUSPENSION POLYMERISATES

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE735284C (en) * 1935-01-01 1943-05-11 Roehm & Haas G M B H Process for polymerizing acrylic, methacrylic and vinyl compounds
US2122886A (en) * 1936-12-11 1938-07-05 Du Pont Process of polymerization

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2715118A (en) * 1951-09-19 1955-08-09 Koppers Co Inc Suspension polymerization using synthetic calcium phosphate
DE1091755B (en) * 1958-04-30 1960-10-27 Styrene Products Ltd Process for the polymerization of vinyl aromatic compounds
US3032540A (en) * 1958-05-20 1962-05-01 Union Carbide Corp Method for improving the color-stability of acrylonitrile-styrene copolymer

Also Published As

Publication number Publication date
FR1007545A (en) 1952-05-07
CH283434A (en) 1952-06-15
DE946922C (en) 1956-08-09
BE493149A (en)
NL72810C (en)

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