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FI20050708A0 - Process for recycling polystyrene - Google Patents

Process for recycling polystyrene

Info

Publication number
FI20050708A0
FI20050708A0 FI20050708A FI20050708A FI20050708A0 FI 20050708 A0 FI20050708 A0 FI 20050708A0 FI 20050708 A FI20050708 A FI 20050708A FI 20050708 A FI20050708 A FI 20050708A FI 20050708 A0 FI20050708 A0 FI 20050708A0
Authority
FI
Finland
Prior art keywords
polystyrene
gel
solvent
mixed
recycling
Prior art date
Application number
FI20050708A
Other languages
Finnish (fi)
Swedish (sv)
Other versions
FI20050708L (en
FI20050708A7 (en
Inventor
Juhani Maeki
Original Assignee
Valtion Teknillinen
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 Valtion Teknillinen filed Critical Valtion Teknillinen
Priority to FI20050708A priority Critical patent/FI20050708A7/en
Publication of FI20050708A0 publication Critical patent/FI20050708A0/en
Priority to PCT/FI2006/000239 priority patent/WO2007003691A1/en
Publication of FI20050708L publication Critical patent/FI20050708L/en
Publication of FI20050708A7 publication Critical patent/FI20050708A7/en

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
    • 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)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

In a method for recycling polystyrene, particularly foamed polystyrene (FPS), the polystyrene is mixed with an organic solvent and recovered from it. In a first step, the polystyrene is mixed with said organic solvent (S) containing water to form a gel (PSG), after which, in a second step, the polystyrene (PS) is separated either by bringing the gel into contact with water or by separating the gel portion from the solvent and evaporating the solvent residue from it.
FI20050708A 2005-07-01 2005-07-01 Method for recycling polystyrene FI20050708A7 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20050708A FI20050708A7 (en) 2005-07-01 2005-07-01 Method for recycling polystyrene
PCT/FI2006/000239 WO2007003691A1 (en) 2005-07-01 2006-07-03 Method for recycling polystyrene

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20050708A FI20050708A7 (en) 2005-07-01 2005-07-01 Method for recycling polystyrene

Publications (3)

Publication Number Publication Date
FI20050708A0 true FI20050708A0 (en) 2005-07-01
FI20050708L FI20050708L (en) 2007-01-02
FI20050708A7 FI20050708A7 (en) 2007-01-02

Family

ID=34803176

Family Applications (1)

Application Number Title Priority Date Filing Date
FI20050708A FI20050708A7 (en) 2005-07-01 2005-07-01 Method for recycling polystyrene

Country Status (2)

Country Link
FI (1) FI20050708A7 (en)
WO (1) WO2007003691A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20120088754A (en) 2009-11-21 2012-08-08 더글라스 피터 마기아리 Head mounted display device
EP2513212B1 (en) 2009-12-17 2021-04-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Method for treating waste containing plastic
WO2014145064A1 (en) 2013-03-15 2014-09-18 Immy Inc. Head mounted display with micro-display alignment mechanism
WO2016049782A1 (en) 2014-10-03 2016-04-07 Polystyvert Inc. Processes for recycling polystyrene waste
US10961367B2 (en) 2017-11-20 2021-03-30 Polystyvert Inc. Processes for recycling polystyrene waste
CA3153154C (en) 2018-10-26 2024-01-02 Polystyvert Inc. Processes for recycling polystyrene waste and/or polystyrene copolymer waste
WO2023082009A1 (en) 2021-11-11 2023-05-19 Polystyvert Inc. Methods of recycling polystyrene material comprising brominated contaminants

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1097196A (en) * 1993-07-05 1995-01-11 杨坪 The callable polystyrene regenerating method of solvent
NL9301660A (en) * 1993-09-27 1995-04-18 Jan Van Den Wittenboer Method for compacting expanded polystyrene, the compacted mass thus obtained, the transport and the processing of the compacted mass thus obtained.
US6270330B1 (en) * 2000-07-06 2001-08-07 Shao-Szu Cheng Waste foamed polystyrene material reclaiming system

Also Published As

Publication number Publication date
WO2007003691A1 (en) 2007-01-11
FI20050708L (en) 2007-01-02
FI20050708A7 (en) 2007-01-02

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