CA2258305C - Decomposition de polymeres par des composes nor-hals - Google Patents

Decomposition de polymeres par des composes nor-hals Download PDF

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Publication number
CA2258305C
CA2258305C CA 2258305 CA2258305A CA2258305C CA 2258305 C CA2258305 C CA 2258305C CA 2258305 CA2258305 CA 2258305 CA 2258305 A CA2258305 A CA 2258305A CA 2258305 C CA2258305 C CA 2258305C
Authority
CA
Canada
Prior art keywords
acid
copolymers
polymers
compounds
styrene
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 - Fee Related
Application number
CA 2258305
Other languages
English (en)
Other versions
CA2258305A1 (fr
Inventor
Rudolf Pfaendner
Heinz Herbst
Kurt Hoffmann
Raymond Seltzer
Matthew Edward Gande
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.)
BASF Schweiz AG
Original Assignee
Ciba Spezialitaetenchemie Holding AG
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 Ciba Spezialitaetenchemie Holding AG filed Critical Ciba Spezialitaetenchemie Holding AG
Priority claimed from PCT/EP1997/003133 external-priority patent/WO1997049737A1/fr
Publication of CA2258305A1 publication Critical patent/CA2258305A1/fr
Application granted granted Critical
Publication of CA2258305C publication Critical patent/CA2258305C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
    • C08J11/18—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material
    • C08J11/28—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation by treatment with organic material by treatment with organic compounds containing nitrogen, sulfur or phosphorus
    • 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
    • C08F8/00—Chemical modification by after-treatment
    • C08F8/50—Partial depolymerisation
    • 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)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un procédé pour décomposer des polymères, notamment des plastiques usagés et vieux, dans lequel des composés dits NOR-HALS, par exemple des composés contenant le groupe (III) dans lequel R* représente alkyle C1-C20, alkyle C1-C20 substitué par OH, cycloalkyle C5-C12 éventuellement substitué par alkyle C1-C4, ou bien alkyle C2-C20 interrompu par O ou S, sont ajoutés et chauffés à des températures supérieures aux températures usuelles de mise en oeuvre des polymères (à partir de 280 DEG C).
CA 2258305 1996-06-26 1997-06-17 Decomposition de polymeres par des composes nor-hals Expired - Fee Related CA2258305C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH159896 1996-06-26
CH1598/96 1996-06-26
PCT/EP1997/003133 WO1997049737A1 (fr) 1996-06-26 1997-06-17 Decomposition de polymeres par des composes nor-hals

Publications (2)

Publication Number Publication Date
CA2258305A1 CA2258305A1 (fr) 1997-12-31
CA2258305C true CA2258305C (fr) 2006-10-10

Family

ID=37114325

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2258305 Expired - Fee Related CA2258305C (fr) 1996-06-26 1997-06-17 Decomposition de polymeres par des composes nor-hals

Country Status (1)

Country Link
CA (1) CA2258305C (fr)

Also Published As

Publication number Publication date
CA2258305A1 (fr) 1997-12-31

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Effective date: 20170619