CA2258305A1 - Decomposing polymers using nor-hals compounds - Google Patents

Decomposing polymers using nor-hals compounds

Info

Publication number
CA2258305A1
CA2258305A1 CA002258305A CA2258305A CA2258305A1 CA 2258305 A1 CA2258305 A1 CA 2258305A1 CA 002258305 A CA002258305 A CA 002258305A CA 2258305 A CA2258305 A CA 2258305A CA 2258305 A1 CA2258305 A1 CA 2258305A1
Authority
CA
Canada
Prior art keywords
polymers
c20alkyl
hals compounds
compounds
substituted
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.)
Granted
Application number
CA002258305A
Other languages
French (fr)
Other versions
CA2258305C (en
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 Specialty Chemicals Holding Inc.
Rudolf Pfaendner
Heinz Herbst
Kurt Hoffmann
Raymond Seltzer
Matthew Edward Gande
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 Specialty Chemicals Holding Inc., Rudolf Pfaendner, Heinz Herbst, Kurt Hoffmann, Raymond Seltzer, Matthew Edward Gande filed Critical Ciba Specialty Chemicals Holding Inc.
Priority claimed from PCT/EP1997/003133 external-priority patent/WO1997049737A1/en
Publication of CA2258305A1 publication Critical patent/CA2258305A1/en
Application granted granted Critical
Publication of CA2258305C publication Critical patent/CA2258305C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • C08J11/10—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

A method is described for the decomposition of polymers, especially waste plastics and used plastics, in which so-called NOR-HALS compounds - that is, for example, compounds comprising the group See formula I in which R* is C1-C20alkyl, OH-substituted C1-C20alkyl, optionally C1-C4alkyl-substituted C5-C12cycloalkyl or O- or S-interrupted C2-C20alkyl - are added and heating is carried out at temperatures which lie above the customary processing temperatures for polymers (280°C or more).
CA 2258305 1996-06-26 1997-06-17 Decomposing polymers using nor-hals compounds Expired - Fee Related CA2258305C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH1598/96 1996-06-26
CH159896 1996-06-26
PCT/EP1997/003133 WO1997049737A1 (en) 1996-06-26 1997-06-17 Decomposing polymers using nor-hals compounds

Publications (2)

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

Family

ID=37114325

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2258305 Expired - Fee Related CA2258305C (en) 1996-06-26 1997-06-17 Decomposing polymers using nor-hals compounds

Country Status (1)

Country Link
CA (1) CA2258305C (en)

Also Published As

Publication number Publication date
CA2258305C (en) 2006-10-10

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Legal Events

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MKLA Lapsed

Effective date: 20170619