ES310012A1 - Expandable thermoplastic polymeric particles - Google Patents

Expandable thermoplastic polymeric particles

Info

Publication number
ES310012A1
ES310012A1 ES0310012A ES310012A ES310012A1 ES 310012 A1 ES310012 A1 ES 310012A1 ES 0310012 A ES0310012 A ES 0310012A ES 310012 A ES310012 A ES 310012A ES 310012 A1 ES310012 A1 ES 310012A1
Authority
ES
Spain
Prior art keywords
particles
water
polymerization
volatile
tert
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
ES0310012A
Other languages
Spanish (es)
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.)
HENNING KAABER SVEND
Original Assignee
HENNING KAABER SVEND
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 HENNING KAABER SVEND filed Critical HENNING KAABER SVEND
Publication of ES310012A1 publication Critical patent/ES310012A1/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08JWORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J9/00Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
    • C08J9/16Making expandable particles
    • C08J9/20Making expandable particles by suspension polymerisation in the presence of the blowing agent

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)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

Thermoplastic polymeric (e.g. polystyrene) particles (e.g beads) containing uniformly distributed throughout them as an expanding agent, water droplets averaging 5-40m dia., may be prepared by incorporating water as a fine dispersion into the monomer or monomers to be polymerized, and subsequently effecting a suitably catalysed suspension polymerization of the resultant water-in-monomer emulsion in an aqueous medium. The suspension may contain emulsifiers and stabilizers, e.g. ester of an aminated fatty acid mannitol dioleate, methanol, N-vinyl pyrrolidone/methyl acrylate copolymer, polyvinyl alcohol, CMC, water soluble starch, BaSO4 calcium silicate and also foamed polystyrene, or a graft polymer of styrene and ethylene oxides. The polymerization may be catalysed by benzoyl peroxide, tert-butyl perbenzoate, di-tert-butyl peroxide, a -a 1-azobis-isobutyronitrile and/or dicumyl peroxide. Fire retarders e.g. tris-(dibromopropyl)-phosphate dyes and pigments are optional additives. There may additionally be present in the particles a gaseous, volatile or gas-forming compound which is insoluble in water, e.g. pentane or air. Petroleum ether of b.p. 30-70 DEG C. may be added during the polymerization as an anti-coagulant the volatile compound specified above may also be added at this stage. The particles may be foamed by (a) heating in a perforated closed mould (b) extruding at a temperature above the softening-expanding temperature of the particles. They may also be partially expanded e.g. by steam treatment, before finally foaming as above. The particles may be stored, especially if they contain a volatile liquid, for a time sufficient to allow part of this liquid and for the water to evaporate and be replaced by air. The expanded products have a low density, e.g. of the order of 10-15 Kg/M3.
ES0310012A 1964-03-03 1965-03-02 Expandable thermoplastic polymeric particles Expired ES310012A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB896564A GB1106143A (en) 1964-03-03 1964-03-03 Expandable thermoplastic polymeric particles

Publications (1)

Publication Number Publication Date
ES310012A1 true ES310012A1 (en) 1965-10-01

Family

ID=9862723

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0310012A Expired ES310012A1 (en) 1964-03-03 1965-03-02 Expandable thermoplastic polymeric particles

Country Status (9)

Country Link
AT (1) AT289404B (en)
CH (1) CH471171A (en)
DE (2) DE1719318A1 (en)
ES (1) ES310012A1 (en)
FI (1) FI46170C (en)
FR (1) FR1438321A (en)
GB (1) GB1106143A (en)
IL (1) IL23068A (en)
NL (1) NL150137B (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4124207C2 (en) * 1991-07-20 1994-12-08 Huels Chemische Werke Ag Expandable styrene polymers and their use for the production of quick-release foam bodies
JP3186835B2 (en) * 1992-05-28 2001-07-11 松本油脂製薬株式会社 Thermally expandable microcapsule, method for producing and expanding method
MY117649A (en) * 1996-07-04 2004-07-31 Shell Int Research Process for the preparation of polymer particles
MY116407A (en) * 1996-07-04 2004-01-31 Shell Int Research Process for the preparation of polymer particles
US6242540B1 (en) * 1996-07-04 2001-06-05 Nova Chemicals (International) S.A. Process for the preparation of polymer particles
DE19812857A1 (en) * 1998-03-24 1999-09-30 Basf Ag Process for the preparation of water-expandable styrene polymers
US7456227B2 (en) 2006-09-08 2008-11-25 Nova Chemicals Inc. Polymer particles and related articles
WO2013045532A1 (en) * 2011-09-28 2013-04-04 Eidgenössische Technische Hochschule Zürich Expandable polymers

Also Published As

Publication number Publication date
CH471171A (en) 1969-04-15
DE1719318A1 (en) 1971-06-03
FI46170C (en) 1973-01-10
NL6502671A (en) 1965-09-06
AT289404B (en) 1971-04-26
FI46170B (en) 1972-10-02
FR1438321A (en) 1966-05-13
IL23068A (en) 1968-03-28
DE1569552A1 (en) 1970-03-05
GB1106143A (en) 1968-03-13
NL150137B (en) 1976-07-15

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