GB1068135A - Suspension polymerization - Google Patents

Suspension polymerization

Info

Publication number
GB1068135A
GB1068135A GB714366A GB714366A GB1068135A GB 1068135 A GB1068135 A GB 1068135A GB 714366 A GB714366 A GB 714366A GB 714366 A GB714366 A GB 714366A GB 1068135 A GB1068135 A GB 1068135A
Authority
GB
United Kingdom
Prior art keywords
peroxide
methyl
vinyl
raised
suspending agent
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
GB714366A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB1068135A publication Critical patent/GB1068135A/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
    • C08F220/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical or a salt, anhydride ester, amide, imide or nitrile thereof
    • C08F220/02—Monocarboxylic acids having less than ten carbon atoms; Derivatives thereof
    • C08F220/10—Esters
    • C08F220/12—Esters of monohydric alcohols or phenols
    • C08F220/14—Methyl esters, e.g. methyl (meth)acrylate
    • 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
    • C08F212/00—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
    • C08F212/02—Monomers containing only one unsaturated aliphatic radical
    • C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
    • C08F212/06—Hydrocarbons
    • C08F212/12—Monomers containing a branched unsaturated aliphatic radical or a ring substituted by an alkyl radical
    • 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
    • C08F212/00—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
    • C08F212/02—Monomers containing only one unsaturated aliphatic radical
    • C08F212/04—Monomers containing only one unsaturated aliphatic radical containing one ring
    • C08F212/06—Hydrocarbons
    • C08F212/08—Styrene

Landscapes

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

Abstract

In a suspension polymerization process, a mixture consisting essentially of methyl methacrylate and a -methyl styrene and a vinyl polymerization catalyst which is monomer soluble and water insoluble is suspended in an aqueous medium containing a water-soluble polymeric suspending agent of formula comprising the recurring structural unit <FORM:1068135/C3/1> where R is hydrogen or methyl and Z is hydroxyl or carboxyl, and the monomer mixture is polymerized at 60 DEG to 150 DEG C. for one to eight days, while maintaining the reaction medium at a pH of 5 to 9. Other monomers e.g. acrylonitrile, acrylamide, maleic acid, ethyl acrylate, decyl acrylate, vinyl acetate, vinyl fluoride and vinylidene chloride may be included in the monomer mixture. The suspending agent is e.g. polyvinyl alcohol derived from polyvinyl acetate at least 80% hydrolyzed, polymethacrylic acid or polyacrylic acid. Peroxide, persulfate or azonitrile catalysts may be used, cyclohexanone peroxide being preferred. Others specified are tertiary butyl peracetate, ditertiary butyl diperphthalate, tertiary butyl perbenzoate and methyl ethyl ketone peroxide. Additional catalysts with different half-lives may be used e.g. benzoyl, lauroyl or caprylyl peroxide or azo-bis (isobutyronitrile) for use as the temperature is raised to 90 DEG C., and dicumyl peroxide or ditertiary butyl peroxide for the final stage, when the temperature may be raised to 150 DEG C. Buffers may be required to maintain the pH at 5 to 9, e.g. Na2HPO4, NaHPO4, Na3PO2, K2HPO4, KH2PO4 or K2CO3. Examples are given of the production of methyl methacrylate/a - methyl styrene copolymers. Tertiary dodecyl mercaptan is used as a chain transfer agent in Examples 7 and 10. Reference has been directed by the Comptroller to Specification 836,837.
GB714366A 1964-03-04 1965-02-18 Suspension polymerization Expired GB1068135A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US34946064A 1964-03-04 1964-03-04

Publications (1)

Publication Number Publication Date
GB1068135A true GB1068135A (en) 1967-05-10

Family

ID=23372498

Family Applications (1)

Application Number Title Priority Date Filing Date
GB714366A Expired GB1068135A (en) 1964-03-04 1965-02-18 Suspension polymerization

Country Status (5)

Country Link
BE (1) BE660206A (en)
ES (1) ES309858A1 (en)
FR (1) FR1493416A (en)
GB (1) GB1068135A (en)
NL (1) NL6502380A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201405624D0 (en) * 2014-03-28 2014-05-14 Synthomer Uk Ltd Method of making a branched polymer, a branched polymer and uses of such a polymer

Also Published As

Publication number Publication date
NL6502380A (en) 1965-09-06
BE660206A (en) 1965-08-24
ES309858A1 (en) 1966-01-16
FR1493416A (en) 1967-09-01

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