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FR2428057A1 - PROCESS FOR REDUCING THE MONOMER CONTENT IN EXPANDABLE THERMOPLASTIC PEARLS - Google Patents

PROCESS FOR REDUCING THE MONOMER CONTENT IN EXPANDABLE THERMOPLASTIC PEARLS

Info

Publication number
FR2428057A1
FR2428057A1 FR7914526A FR7914526A FR2428057A1 FR 2428057 A1 FR2428057 A1 FR 2428057A1 FR 7914526 A FR7914526 A FR 7914526A FR 7914526 A FR7914526 A FR 7914526A FR 2428057 A1 FR2428057 A1 FR 2428057A1
Authority
FR
France
Prior art keywords
monomer content
reducing
pearls
expandable thermoplastic
ethylenically unsaturated
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.)
Granted
Application number
FR7914526A
Other languages
French (fr)
Other versions
FR2428057B1 (en
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.)
Kemanord AB
Original Assignee
Kemanord AB
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 Kemanord AB filed Critical Kemanord AB
Publication of FR2428057A1 publication Critical patent/FR2428057A1/en
Application granted granted Critical
Publication of FR2428057B1 publication Critical patent/FR2428057B1/fr
Granted 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
    • C08F6/00—Post-polymerisation treatments
    • C08F6/006—Removal of residual monomers by chemical reaction, e.g. scavenging
    • 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
    • C08J9/22—After-treatment of expandable particles; Forming foamed products

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)
  • General Chemical & Material Sciences (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)
  • Polymerisation Methods In General (AREA)

Abstract

L'invention est relative à un procédé pour réduire la teneur en monomère de perles expansibles en matière thermoplastique, obtenues par polymérisation d'un ou de plusieurs monomères éthyléniquement insaturés, en suspension aqueuse et en présence d'un agent gonflant, caractérisé en ce que l'on chauffe au moins une partie de la pâte formée par les perles expansibles dans de l'eau en présence d'un initiateur hydrosoluble pour monomères éthyléniquement insaturés, à une température supérieure à 65 degrés C dans un récipient entièrement rempli d'un liquide, jusqu'à ce que l'on ait obtenu une réduction substantielle de la teneur en monomère résiduel.The invention relates to a process for reducing the monomer content of expandable beads of thermoplastic material, obtained by polymerization of one or more ethylenically unsaturated monomers, in aqueous suspension and in the presence of a swelling agent, characterized in that at least a portion of the paste formed by the expandable pearls is heated in water in the presence of a water-soluble initiator for ethylenically unsaturated monomers, to a temperature above 65 degrees C in a container completely filled with a liquid until a substantial reduction in the residual monomer content has been obtained.

FR7914526A 1978-06-08 1979-06-07 PROCESS FOR REDUCING THE MONOMER CONTENT IN EXPANDABLE THERMOPLASTIC PEARLS Granted FR2428057A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7806665A SE429238B (en) 1978-06-08 1978-06-08 SET TO REDUCE MONOMER CONTENT IN EXPANDABLE TERMOPLASTES

Publications (2)

Publication Number Publication Date
FR2428057A1 true FR2428057A1 (en) 1980-01-04
FR2428057B1 FR2428057B1 (en) 1984-09-14

Family

ID=20335152

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7914526A Granted FR2428057A1 (en) 1978-06-08 1979-06-07 PROCESS FOR REDUCING THE MONOMER CONTENT IN EXPANDABLE THERMOPLASTIC PEARLS

Country Status (15)

Country Link
JP (1) JPS5835618B2 (en)
AT (1) AT379162B (en)
AU (1) AU512761B2 (en)
BE (1) BE876836A (en)
CA (1) CA1105650A (en)
CH (1) CH642384A5 (en)
DE (1) DE2923310B2 (en)
DK (1) DK238379A (en)
FI (1) FI65793C (en)
FR (1) FR2428057A1 (en)
GB (1) GB2025429B (en)
IT (1) IT1116551B (en)
NL (1) NL177497C (en)
NO (1) NO151663C (en)
SE (1) SE429238B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109456506A (en) * 2018-11-07 2019-03-12 西能化工科技(上海)有限公司 The heat-expandable microsphere and preparation method thereof of low residual monomer content

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550003A (en) * 1983-12-13 1985-10-29 Asahi Kasei Kogyo Kabushiki Kaisha Vinylidene chloride type resin expandable particles, foam particles, in-mold foam molding by use thereof and process for producing them
US10093783B2 (en) 2014-11-26 2018-10-09 Matsumoto Yushi-Seiyaku Co., Ltd. Heat-expandable microspheres and application thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1013215A (en) * 1961-08-22 1965-12-15 Oldrich Marek A method of producing foamable thermoplastic materials
BE677224A (en) * 1965-03-01 1966-09-01
FR1480502A (en) * 1965-05-13 1967-05-12 Foster Grant Co Inc Process for preparing expandable plastic particles
EP0000572A1 (en) * 1977-08-01 1979-02-07 BASF Aktiengesellschaft Process for preparing expandible polystyrene beads

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2511315A1 (en) * 1975-03-19 1976-09-23 Sealed Air Corp METHOD OF MANUFACTURING FOAMABLE STYLE POLYMER PIECES

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1013215A (en) * 1961-08-22 1965-12-15 Oldrich Marek A method of producing foamable thermoplastic materials
BE677224A (en) * 1965-03-01 1966-09-01
FR1480502A (en) * 1965-05-13 1967-05-12 Foster Grant Co Inc Process for preparing expandable plastic particles
EP0000572A1 (en) * 1977-08-01 1979-02-07 BASF Aktiengesellschaft Process for preparing expandible polystyrene beads

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109456506A (en) * 2018-11-07 2019-03-12 西能化工科技(上海)有限公司 The heat-expandable microsphere and preparation method thereof of low residual monomer content

Also Published As

Publication number Publication date
SE7806665L (en) 1979-12-09
ATA386279A (en) 1985-04-15
AU512761B2 (en) 1980-10-23
CH642384A5 (en) 1984-04-13
JPS54163966A (en) 1979-12-27
FI65793C (en) 1984-07-10
FI781847A (en) 1979-12-09
DE2923310A1 (en) 1979-12-13
NL177497B (en) 1985-05-01
NO151663B (en) 1985-02-04
DK238379A (en) 1979-12-09
NL177497C (en) 1985-10-01
FI65793B (en) 1984-03-30
DE2923310B2 (en) 1980-12-11
IT1116551B (en) 1986-02-10
AT379162B (en) 1985-11-25
GB2025429B (en) 1982-12-01
CA1105650A (en) 1981-07-21
SE429238B (en) 1983-08-22
GB2025429A (en) 1980-01-23
IT7949329A0 (en) 1979-06-06
FR2428057B1 (en) 1984-09-14
NL7904447A (en) 1979-12-11
BE876836A (en) 1979-12-07
AU4720079A (en) 1979-12-13
JPS5835618B2 (en) 1983-08-03
NO791908L (en) 1979-12-11
NO151663C (en) 1985-05-15

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