FR2110724A5 - Polymerisation of vinyl aromatic monomers - in aqs suspension - Google Patents

Polymerisation of vinyl aromatic monomers - in aqs suspension

Info

Publication number
FR2110724A5
FR2110724A5 FR7038874A FR7038874A FR2110724A5 FR 2110724 A5 FR2110724 A5 FR 2110724A5 FR 7038874 A FR7038874 A FR 7038874A FR 7038874 A FR7038874 A FR 7038874A FR 2110724 A5 FR2110724 A5 FR 2110724A5
Authority
FR
France
Prior art keywords
suspension
aqs
polymerisation
suspending agent
vinyl aromatic
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
FR7038874A
Other languages
French (fr)
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.)
Monsanto Co
Original Assignee
Monsanto Co
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 Monsanto Co filed Critical Monsanto Co
Priority to FR7038874A priority Critical patent/FR2110724A5/en
Application granted granted Critical
Publication of FR2110724A5 publication Critical patent/FR2110724A5/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

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

Polymerisation of a vinylaromatic monomer is effected in an aqs. suspension system comprising as first suspending agent a vinyl alcohol homopolymer or a copolymer comprising >=95 mol. % of polymerised vinyl alcohol, and as second suspending agent a comprising 75-91 mol. % of polymerised vinyl alcohol. The mixture of suspending agents leads to very good stability and control of the average size of beads produced. The aq. suspension pref. contains 0.03-0.5 wt. %. of first suspending agent and 0.002-0.05 wt. % of the second suspending agent. A surface active agent may be present. The vinyl aromatic monomer may be styrene or a halostyrene or alkylstyrene.
FR7038874A 1970-10-28 1970-10-28 Polymerisation of vinyl aromatic monomers - in aqs suspension Expired FR2110724A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7038874A FR2110724A5 (en) 1970-10-28 1970-10-28 Polymerisation of vinyl aromatic monomers - in aqs suspension

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7038874A FR2110724A5 (en) 1970-10-28 1970-10-28 Polymerisation of vinyl aromatic monomers - in aqs suspension

Publications (1)

Publication Number Publication Date
FR2110724A5 true FR2110724A5 (en) 1972-06-02

Family

ID=9063400

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7038874A Expired FR2110724A5 (en) 1970-10-28 1970-10-28 Polymerisation of vinyl aromatic monomers - in aqs suspension

Country Status (1)

Country Link
FR (1) FR2110724A5 (en)

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Legal Events

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TP Transmission of property
ST Notification of lapse