SE7806665L - WAY TO REDUCE THE MONOMER CONTENT IN EXPANDABLE PEARLS OF THERMOPLASTIC MATERIAL - Google Patents

WAY TO REDUCE THE MONOMER CONTENT IN EXPANDABLE PEARLS OF THERMOPLASTIC MATERIAL

Info

Publication number
SE7806665L
SE7806665L SE7806665A SE7806665A SE7806665L SE 7806665 L SE7806665 L SE 7806665L SE 7806665 A SE7806665 A SE 7806665A SE 7806665 A SE7806665 A SE 7806665A SE 7806665 L SE7806665 L SE 7806665L
Authority
SE
Sweden
Prior art keywords
beads
liquid medium
monomer content
expandable
blowing agent
Prior art date
Application number
SE7806665A
Other languages
Unknown language ( )
Swedish (sv)
Other versions
SE429238B (en
Inventor
J Petersen
Original Assignee
Kemanobel 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 Kemanobel Ab filed Critical Kemanobel Ab
Priority to SE7806665A priority Critical patent/SE429238B/en
Priority to FI781847A priority patent/FI65793C/en
Priority to US05/927,778 priority patent/US4147845A/en
Priority to AU47200/79A priority patent/AU512761B2/en
Priority to AT0386279A priority patent/AT379162B/en
Priority to NLAANVRAGE7904447,A priority patent/NL177497C/en
Priority to JP54070017A priority patent/JPS5835618B2/en
Priority to IT49329/79A priority patent/IT1116551B/en
Priority to CA329,252A priority patent/CA1105650A/en
Priority to NO791908A priority patent/NO151663C/en
Priority to BE0/195626A priority patent/BE876836A/en
Priority to FR7914526A priority patent/FR2428057A1/en
Priority to GB7920135A priority patent/GB2025429B/en
Priority to CH538979A priority patent/CH642384A5/en
Priority to DK238379A priority patent/DK238379A/en
Priority to DE2923310A priority patent/DE2923310B2/en
Publication of SE7806665L publication Critical patent/SE7806665L/en
Publication of SE429238B publication Critical patent/SE429238B/en

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

The residual monomer content of expandable thermoplastic beads containing a volatile blowing agent, which are produced from ethylenically unsaturated monomers by a conventional aqueous suspension polymerization process in the presence of the blowing agent, is reduced by heating a slurry of the beads in a vessel completely filled with a liquid medium and in the presence of a water soluble polymerization initiator at a temperature exceeding 65 DEG C. The liquid medium preferably includes the aqueous polymerization medium used so that the process also removes monomer residues therefrom. Expansion of the beads during the heat treatment is inhibited by the pressure of the liquid medium, which has no interface with any gaseous phase. The process is particularly useful for treating expandable beads formed from the copolymerization of (meth)acrylonitrile with monomers such as styrene or vinylidene chloride.
SE7806665A 1976-12-10 1978-06-08 SET TO REDUCE MONOMER CONTENT IN EXPANDABLE TERMOPLASTES SE429238B (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
SE7806665A SE429238B (en) 1978-06-08 1978-06-08 SET TO REDUCE MONOMER CONTENT IN EXPANDABLE TERMOPLASTES
FI781847A FI65793C (en) 1978-06-08 1978-06-09 SEAT ATTED REDUCERA MONOMERHALTEN I EXPANDERBARA TERMOPLASTPAERLOR
US05/927,778 US4147845A (en) 1976-12-10 1978-07-25 Reducing the monomer content in expandable thermoplastic beads
AU47200/79A AU512761B2 (en) 1978-06-08 1979-05-18 Reducing monomer content in expandable thermoplastic beads
AT0386279A AT379162B (en) 1978-06-08 1979-05-28 METHOD FOR REDUCING THE MONOMER CONTENT IN EXPANDABLE PEARLS MADE OF THERMOPLASTIC MATERIAL
NLAANVRAGE7904447,A NL177497C (en) 1978-06-08 1979-06-06 METHOD FOR PREPARING EXPANDABLE THERMOPLASTIC POLYMER GRANULES AND FORMED EXPANDED PREPARATIONS MADE THEREOF.
JP54070017A JPS5835618B2 (en) 1978-06-08 1979-06-06 Method for reducing monomer content of expandable beads of thermoplastic material
IT49329/79A IT1116551B (en) 1978-06-08 1979-06-06 PROCEDURE TO REDUCE THE MONOMERIC CONTENT OF EXPANDABLE PEPLINES OF THERMOPLASTIC MATERIALS
CA329,252A CA1105650A (en) 1978-06-08 1979-06-07 Process for reducing the monomer content in expandable beads of thermoplastic materials
NO791908A NO151663C (en) 1978-06-08 1979-06-07 PROCEDURE FOR REDUCING MONOMER CONTENT IN EXPANDABLE THERMOPLAST Beads.
BE0/195626A BE876836A (en) 1978-06-08 1979-06-07 PROCESS FOR REDUCING RESIDUAL MONOMERS IN PELLETS OF EXPANDABLE THERMOPLASTIC MATERIALS
FR7914526A FR2428057A1 (en) 1978-06-08 1979-06-07 PROCESS FOR REDUCING THE MONOMER CONTENT IN EXPANDABLE THERMOPLASTIC PEARLS
GB7920135A GB2025429B (en) 1978-06-08 1979-06-08 Process for reducing the monomer content in expandable beads of thermoplastic materials
CH538979A CH642384A5 (en) 1978-06-08 1979-06-08 METHOD FOR REDUCING THE MONOMER CONTENT IN EXPANDABLE PEARLS MADE OF THERMOPLASTIC MATERIAL.
DK238379A DK238379A (en) 1978-06-08 1979-06-08 PROCEDURE TO REDUCE THE MONOMER CONTENT OF EXPANDABLE PEARLS OF THERMOPLASTIC MATERIAL
DE2923310A DE2923310B2 (en) 1978-06-08 1979-06-08 Process for reducing the monomer content in expandable beads made of thermoplastic materials

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
SE7806665L true SE7806665L (en) 1979-12-09
SE429238B SE429238B (en) 1983-08-22

Family

ID=20335152

Family Applications (1)

Application Number Title Priority Date Filing Date
SE7806665A SE429238B (en) 1976-12-10 1978-06-08 SET TO REDUCE MONOMER CONTENT IN EXPANDABLE TERMOPLASTES

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)

Families Citing this family (3)

* 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
SE540587C2 (en) 2014-11-26 2018-10-02 Matsumoto Yushi Seiyaku Kk Heat-expandable microspheres and application thereof
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

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH439717A (en) * 1961-08-22 1967-07-15 Marek Oldrich Process for the production of foamable thermoplastic polymers
US3425966A (en) * 1965-03-01 1969-02-04 Dow Chemical Co Three stage suspension polymerization process for vinyl aryl monomers
FR1480502A (en) * 1965-05-13 1967-05-12 Foster Grant Co Inc Process for preparing expandable plastic particles
DE2511315A1 (en) * 1975-03-19 1976-09-23 Sealed Air Corp METHOD OF MANUFACTURING FOAMABLE STYLE POLYMER PIECES
DE2734607A1 (en) * 1977-08-01 1979-02-15 Basf Ag PROCESS FOR THE MANUFACTURING OF SPHERICAL EXPANDABLE STYRENE POLYMERIZES

Also Published As

Publication number Publication date
DK238379A (en) 1979-12-09
FI781847A (en) 1979-12-09
FI65793B (en) 1984-03-30
DE2923310B2 (en) 1980-12-11
SE429238B (en) 1983-08-22
IT7949329A0 (en) 1979-06-06
DE2923310A1 (en) 1979-12-13
NL7904447A (en) 1979-12-11
ATA386279A (en) 1985-04-15
AU512761B2 (en) 1980-10-23
NL177497B (en) 1985-05-01
CA1105650A (en) 1981-07-21
NO791908L (en) 1979-12-11
AT379162B (en) 1985-11-25
FI65793C (en) 1984-07-10
IT1116551B (en) 1986-02-10
NO151663C (en) 1985-05-15
FR2428057A1 (en) 1980-01-04
NL177497C (en) 1985-10-01
BE876836A (en) 1979-12-07
JPS54163966A (en) 1979-12-27
FR2428057B1 (en) 1984-09-14
GB2025429A (en) 1980-01-23
JPS5835618B2 (en) 1983-08-03
NO151663B (en) 1985-02-04
AU4720079A (en) 1979-12-13
CH642384A5 (en) 1984-04-13
GB2025429B (en) 1982-12-01

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