GB1184360A - Improvements in Catalytic Chemical Processes - Google Patents

Improvements in Catalytic Chemical Processes

Info

Publication number
GB1184360A
GB1184360A GB5170567A GB5170567A GB1184360A GB 1184360 A GB1184360 A GB 1184360A GB 5170567 A GB5170567 A GB 5170567A GB 5170567 A GB5170567 A GB 5170567A GB 1184360 A GB1184360 A GB 1184360A
Authority
GB
United Kingdom
Prior art keywords
examples
acid
sodium
reducing agent
potassium
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
GB5170567A
Inventor
Eli Levine
Philip C Reuther
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.)
Celanese Corp
Original Assignee
Celanese Corp
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 Celanese Corp filed Critical Celanese Corp
Priority to GB5170567A priority Critical patent/GB1184360A/en
Priority to FR130119A priority patent/FR1545476A/en
Publication of GB1184360A publication Critical patent/GB1184360A/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
    • C08F4/28—Oxygen or compounds releasing free oxygen

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (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)

Abstract

1,184,360. Redox polymerization catalyst. CELANESE CORP. 14 Nov., 1967, No. 51705/67. Heading C3P. A redox catalyst system wherein an arylphosphinic acid or a water-soluble salt thereof is used as the reducing agent is employed in particular for the emulsion polymerization of ethylenically unsaturated monomers, e.g. vinyl acetate or an alkyl acrylate and/or methacrylate. Polymers produced from monomers containing cross-linking groups may be crosslinked by heating, without any additional catalyst. Specified aryl phosphinic compounds are benzene-, p-toluene-, xylene-, alphanaphthalene-, beta-naphthalene- and diphenylphosphinic acids and their lithium, sodium, potassium and ammonium salts. A conventional peroxy compound is used as oxidant. In Examples I, VI and VII an aqueous preemulsion containing methyl methacrylate, ethyl acrylate, an alkylaryl polyether alcohol, nonylphenoxy poly-(ethyleneoxy) ethanol, benzene phosphinio acid and a solution of sodium persulphate are added over a period of time to a mixture containing all the aforesaid reactants, further amounts of the emulsifiers being added subsequently. The procedure of these examples is followed in Examples II to V, except that the reducing agent is toluenephosphinic acid, xylenephosphinic acid, or the sodium or potassium salt of benzenephosphinic acid, and in Examples VIII and IX, except that the oxidant used is potassium or ammonium persulphate. In Examples X and XI the pre-emulsion also contains N-methylol acrylamide, but the reducing agent is omitted and is added as a separate solution, which also contains sodium bicarbonate, some additional bicarbonate being present in the initial reaction mixture. .
GB5170567A 1967-11-14 1967-11-14 Improvements in Catalytic Chemical Processes Expired GB1184360A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB5170567A GB1184360A (en) 1967-11-14 1967-11-14 Improvements in Catalytic Chemical Processes
FR130119A FR1545476A (en) 1967-11-14 1967-11-29 Redox catalyst and emulsion polymerization process including use

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB5170567A GB1184360A (en) 1967-11-14 1967-11-14 Improvements in Catalytic Chemical Processes

Publications (1)

Publication Number Publication Date
GB1184360A true GB1184360A (en) 1970-03-18

Family

ID=10461054

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5170567A Expired GB1184360A (en) 1967-11-14 1967-11-14 Improvements in Catalytic Chemical Processes

Country Status (1)

Country Link
GB (1) GB1184360A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4849488A (en) * 1986-09-24 1989-07-18 Bayer Aktiengesellschaft Polymerization of acrylic derivatives

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4849488A (en) * 1986-09-24 1989-07-18 Bayer Aktiengesellschaft Polymerization of acrylic derivatives

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees