FR2079991A5 - Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors - Google Patents

Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors

Info

Publication number
FR2079991A5
FR2079991A5 FR7005966A FR7005966A FR2079991A5 FR 2079991 A5 FR2079991 A5 FR 2079991A5 FR 7005966 A FR7005966 A FR 7005966A FR 7005966 A FR7005966 A FR 7005966A FR 2079991 A5 FR2079991 A5 FR 2079991A5
Authority
FR
France
Prior art keywords
pearls
asymmetrical
polymer
concn
colloid
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
FR7005966A
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.)
Produits Chimiques Pechiney Saint Gobain
Original Assignee
Produits Chimiques Pechiney Saint Gobain
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 Produits Chimiques Pechiney Saint Gobain filed Critical Produits Chimiques Pechiney Saint Gobain
Priority to FR7005966A priority Critical patent/FR2079991A5/en
Priority to BE771338A priority patent/BE771338A/en
Application granted granted Critical
Publication of FR2079991A5 publication Critical patent/FR2079991A5/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
    • 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
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/16—Making expandable particles
    • C08J9/20—Making expandable particles by suspension polymerisation in the presence of the blowing agent
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2325/00—Characterised by the use of homopolymers or 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; Derivatives of such polymers
    • C08J2325/02—Homopolymers or copolymers of hydrocarbons
    • C08J2325/04—Homopolymers or copolymers of styrene

Landscapes

  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Lubricants (AREA)

Abstract

The pearls of a styrene polymer (or copolymer with up to 80% of another monomer) are made by aqs. suspension polymsn. of the styrene (mixt.) in a concn. of 20 wt.% of reaction medium to coalescing concn; (pref. 45 - 70 wt.%), using a colloid protector (such as PVA, PVP, hydroxyalkylcellulose, Al2O3 or CaCO3), opt. a surfactant, and sufficient agitation to give a shearing action on polymer pearls once reaction medium thickens (e.g. tip speed 1.45 - 7 m/s.) Gives better handle of polymer feed to processing machinery, with less danger of personnel slipping.
FR7005966A 1970-02-19 1970-02-19 Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors Expired FR2079991A5 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR7005966A FR2079991A5 (en) 1970-02-19 1970-02-19 Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors
BE771338A BE771338A (en) 1970-02-19 1971-08-13 PREPARATION OF DEFORMED STYRENE POLYMER BEADS.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7005966A FR2079991A5 (en) 1970-02-19 1970-02-19 Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors
BE771338A BE771338A (en) 1970-02-19 1971-08-13 PREPARATION OF DEFORMED STYRENE POLYMER BEADS.

Publications (1)

Publication Number Publication Date
FR2079991A5 true FR2079991A5 (en) 1971-11-12

Family

ID=25656930

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7005966A Expired FR2079991A5 (en) 1970-02-19 1970-02-19 Asymmetrical polystyrene pearls - by agitated suspension polymn in the presence of colloid protectors

Country Status (2)

Country Link
BE (1) BE771338A (en)
FR (1) FR2079991A5 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618468A (en) * 1983-09-01 1986-10-21 Chemische Werke Huls Aktiengesellschaft Method for controlling bead size in the production of expandable styrene polymers by suspension polymerization
WO2004029151A1 (en) * 2002-09-20 2004-04-08 Basf Aktiengesellschaft Mixtures of propellant-free microgranulates

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4618468A (en) * 1983-09-01 1986-10-21 Chemische Werke Huls Aktiengesellschaft Method for controlling bead size in the production of expandable styrene polymers by suspension polymerization
WO2004029151A1 (en) * 2002-09-20 2004-04-08 Basf Aktiengesellschaft Mixtures of propellant-free microgranulates

Also Published As

Publication number Publication date
BE771338A (en) 1972-02-16

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Legal Events

Date Code Title Description
ST Notification of lapse