GB707548A - Suspension polymerisation process - Google Patents

Suspension polymerisation process

Info

Publication number
GB707548A
GB707548A GB3115450A GB3115450A GB707548A GB 707548 A GB707548 A GB 707548A GB 3115450 A GB3115450 A GB 3115450A GB 3115450 A GB3115450 A GB 3115450A GB 707548 A GB707548 A GB 707548A
Authority
GB
United Kingdom
Prior art keywords
aqueous medium
tert
group
calcium oxalate
unsaturated compounds
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
GB3115450A
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
Original Assignee
PETROCARBON 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 PETROCARBON Ltd filed Critical PETROCARBON Ltd
Priority to GB3115450A priority Critical patent/GB707548A/en
Publication of GB707548A publication Critical patent/GB707548A/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

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)
  • Graft Or Block Polymers (AREA)

Abstract

Unsaturated compounds containing a CH2= C< group in the molecule are polymerized in suspension in an aqueous medium with the use of a substantially neutral calcium oxalate as a suspension stabilizer. Unsaturated compounds specified are methyl methacrylate and styrene, which latter may be copolymerized with a minor proportion of another unsaturated compound containing a CH2=C< group such as acrylonitrile or divinyl benzene; the divinyl benzene used may be in the form of a concentrate containing a substantial proportion of ethyl vinyl benzene, and also containing tert. butyl catecohol as an inhibitor. The process may also be applied to the production of high impact strength polystyrene by polymerizing styrene which contains a minor proportion of a natural or synthetic rubber dissolved therein. Polymerization is preferably carried out in the presence of a catalyst such as benzoyl peroxide or tert. butyl perbenzoate, and the aqueous medium may contain gelatin in addition to the calcium oxalate dispersing agent. The polymerization products are in the form of hard beads.
GB3115450A 1950-12-21 1950-12-21 Suspension polymerisation process Expired GB707548A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3115450A GB707548A (en) 1950-12-21 1950-12-21 Suspension polymerisation process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3115450A GB707548A (en) 1950-12-21 1950-12-21 Suspension polymerisation process

Publications (1)

Publication Number Publication Date
GB707548A true GB707548A (en) 1954-04-21

Family

ID=10318837

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3115450A Expired GB707548A (en) 1950-12-21 1950-12-21 Suspension polymerisation process

Country Status (1)

Country Link
GB (1) GB707548A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886553A (en) * 1957-04-01 1959-05-12 Monsanto Chemicals Process for the suspension polymerization of vinylidene aromatic hydrocarbons having rubbery conjugated 1, 3-diene polymers dissolved therein
DE1091755B (en) * 1958-04-30 1960-10-27 Styrene Products Ltd Process for the polymerization of vinyl aromatic compounds

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2886553A (en) * 1957-04-01 1959-05-12 Monsanto Chemicals Process for the suspension polymerization of vinylidene aromatic hydrocarbons having rubbery conjugated 1, 3-diene polymers dissolved therein
DE1091755B (en) * 1958-04-30 1960-10-27 Styrene Products Ltd Process for the polymerization of vinyl aromatic compounds

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