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AU2002363094A1 - Recycling of waste expanded polystyrene foams to give products which may be re-expanded - Google Patents

Recycling of waste expanded polystyrene foams to give products which may be re-expanded

Info

Publication number
AU2002363094A1
AU2002363094A1 AU2002363094A AU2002363094A AU2002363094A1 AU 2002363094 A1 AU2002363094 A1 AU 2002363094A1 AU 2002363094 A AU2002363094 A AU 2002363094A AU 2002363094 A AU2002363094 A AU 2002363094A AU 2002363094 A1 AU2002363094 A1 AU 2002363094A1
Authority
AU
Australia
Prior art keywords
polystyrene
expanded
lower alkyl
waste
precipitated
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.)
Abandoned
Application number
AU2002363094A
Inventor
Andreas Maurer
Martin Schlummer
Gerd Wolz
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.)
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Original Assignee
Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
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
Priority claimed from DE2002107333 external-priority patent/DE10207333B4/en
Application filed by Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV filed Critical Fraunhofer Gesellschaft zur Foerderung der Angewandten Forschung eV
Publication of AU2002363094A1 publication Critical patent/AU2002363094A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • 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
    • C08J11/00—Recovery or working-up of waste materials
    • C08J11/04—Recovery or working-up of waste materials of polymers
    • C08J11/06—Recovery or working-up of waste materials of polymers without chemical reactions
    • C08J11/08—Recovery or working-up of waste materials of polymers without chemical reactions using selective solvents for polymer components
    • 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
    • C08J2325/06—Polystyrene
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/62—Plastics recycling; Rubber recycling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (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)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Addition Polymer Or Copolymer, Post-Treatments, Or Chemical Modifications (AREA)

Abstract

The invention relates to a method for the production of re-expandable polystyrene by material recycling of waste expanded polystyrenes. The expanded polystyrene waste is dissolved in a solvent, selected from di-(lower alkylene)glycol di-(lower alkyl) ethers, where lower alkyl = straight- or branched-chain C1 - C12 alkyl, mono- or di-carboxylate di-(lower alkyl) esters with a straight- or branched- carboxylate chain length of C1 - C12, where lower alkyl has the meaning given for the glycol ether, THF, ketones, mixtures of the above solvents and mixtures of said solvents with ethylene carbonate, propylene carbonate, cyclohexane and/or rapeseed oil methyl ester. The polystyrene solution is precipitated using a precipitating agent which has a polarity lower than the employed solvent and the precipitated polystyrene is optionally partly dried, such that the blowing agent incorporated in the polystyrene is not removed. Finally the precipitated polystyrene can be re-expanded by means of a heat-carrier.
AU2002363094A 2001-10-24 2002-10-24 Recycling of waste expanded polystyrene foams to give products which may be re-expanded Abandoned AU2002363094A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10152570.2 2001-10-24
DE10152570 2001-10-24
DE2002107333 DE10207333B4 (en) 2001-10-24 2002-02-21 Recycling of waste expanded polymer foams to re-expandable products
DE10207333.3 2002-02-21
PCT/EP2002/011921 WO2003035729A2 (en) 2001-10-24 2002-10-24 Recycling of waste expanded polystyrene foams to give products which may be re-expanded

Publications (1)

Publication Number Publication Date
AU2002363094A1 true AU2002363094A1 (en) 2003-05-06

Family

ID=26010449

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002363094A Abandoned AU2002363094A1 (en) 2001-10-24 2002-10-24 Recycling of waste expanded polystyrene foams to give products which may be re-expanded

Country Status (7)

Country Link
EP (1) EP1438351B1 (en)
AT (1) ATE348855T1 (en)
AU (1) AU2002363094A1 (en)
DE (1) DE50209030D1 (en)
DK (1) DK1438351T3 (en)
ES (1) ES2276982T3 (en)
WO (1) WO2003035729A2 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005026451A1 (en) 2005-06-08 2006-12-14 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Process for the recycling of plastics and their use
CN100404610C (en) * 2006-08-24 2008-07-23 姚野 Production method of polystyrene waste foam regeneration foaming
CN101230152B (en) * 2007-01-28 2010-05-19 青岛科技大学 Preparation method of waste polystyrene micron-scale spherical particles
CA2638798A1 (en) * 2008-08-18 2010-02-18 Duval Technologies Inc. Use of a biosolvent for recycling of polymeric and asphalt materials, and depollution of water polluted by hydrocarbons
CN101367956B (en) * 2008-10-13 2011-02-02 吉林大学 Method for recycling polystyrene foamed plastic with vegetable fat methyl ester production as volume reduction agent
US9284431B2 (en) 2012-02-14 2016-03-15 Clariant International Ltd. Method for recycling floor coverings
KR102314967B1 (en) * 2014-10-03 2021-10-20 폴리스타이버트 인크. Processes for recycling polystyrene waste
US10407587B2 (en) 2015-10-07 2019-09-10 Sun Chemical Corporation Polystyrene varnishes, printing inks, coatings and overprints
NL2016039B1 (en) 2015-12-24 2017-07-21 Synbra Tech B V Method for recycling EPS foams.
FI127493B (en) 2016-12-20 2018-07-13 Finnfoam Oy Insulating board and method for its production
KR20250057924A (en) 2017-11-20 2025-04-29 폴리스타이버트 인크. Processes for recycling polystyrene waste
PL3870640T3 (en) 2018-10-26 2025-03-03 Polystyvert Inc. Processes for recycling polystyrene waste and/or polystyrene copolymer waste
US12281207B2 (en) 2021-11-11 2025-04-22 Polystyvert Inc. Methods of recycling polystyrene material comprising brominated contaminants
DE102022001442A1 (en) 2022-04-26 2023-10-26 Styrotec GmbH Destruction of brominated flame retardants during the recycling of foamed polystyrene insulation material
CN116376107A (en) * 2023-04-28 2023-07-04 安徽圆燃材料科技有限公司 A kind of preparation method of polystyrene particles

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5629352A (en) * 1995-04-24 1997-05-13 Matsushita Electric Industrial Co., Ltd. Solvent for polystyrene, method for reducing volume of polystyrene foam and method for recycling polystyrene foam
JP3530995B2 (en) * 1997-09-11 2004-05-24 日立造船株式会社 Recycling method for expanded polystyrene
ATE340215T1 (en) * 2000-03-15 2006-10-15 Kagoshima Prefecture METHOD FOR PRODUCING RECYCLED EXPANDED POLYSTYRENE RESIN PARTICLES
DE10207336A1 (en) * 2001-10-24 2003-05-15 Fraunhofer Ges Forschung Densification and purification of foamed polystyrene waste for recycling, by dissolution in specific solvent, e.g. alkylene glycol dialkyl ether, and precipitation, preferably with alcohol

Also Published As

Publication number Publication date
DE50209030D1 (en) 2007-02-01
ATE348855T1 (en) 2007-01-15
DK1438351T3 (en) 2007-04-16
WO2003035729A2 (en) 2003-05-01
ES2276982T3 (en) 2007-07-01
EP1438351B1 (en) 2006-12-20
WO2003035729A3 (en) 2003-12-31
EP1438351A2 (en) 2004-07-21

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Legal Events

Date Code Title Description
MK6 Application lapsed section 142(2)(f)/reg. 8.3(3) - pct applic. not entering national phase