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WO2005118691A3 - Separation of polyolefins from polyamides - Google Patents

Separation of polyolefins from polyamides Download PDF

Info

Publication number
WO2005118691A3
WO2005118691A3 PCT/US2005/019821 US2005019821W WO2005118691A3 WO 2005118691 A3 WO2005118691 A3 WO 2005118691A3 US 2005019821 W US2005019821 W US 2005019821W WO 2005118691 A3 WO2005118691 A3 WO 2005118691A3
Authority
WO
WIPO (PCT)
Prior art keywords
ester solvent
solvent composition
waste
polyolefin
polymers
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.)
Ceased
Application number
PCT/US2005/019821
Other languages
French (fr)
Other versions
WO2005118691A2 (en
Inventor
Lloyd Ballard Mauldin
Jerry Allen Cook
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.)
Chemical Products Corp
Original Assignee
Chemical Products Corp
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 US10/708,693 external-priority patent/US7067613B2/en
Priority claimed from US10/708,479 external-priority patent/US20060069170A1/en
Application filed by Chemical Products Corp filed Critical Chemical Products Corp
Publication of WO2005118691A2 publication Critical patent/WO2005118691A2/en
Publication of WO2005118691A3 publication Critical patent/WO2005118691A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • C08J2323/00—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers
    • C08J2323/02—Characterised by the use of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Derivatives of such polymers not modified by chemical after treatment
    • 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
    • C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
    • C08J2377/02—Polyamides derived from omega-amino carboxylic acids or from lactams thereof
    • 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)

Abstract

In the recycling of polyamides, for example Nylon 6 and Nylon 6,6, from post-consumer or post-industrial waste, a process is disclosed to separate polyamide polymers from commingled polyolefin polymer waste components, for example polypropylene, by admixing the waste with an ester solvent composition and heating the admixture to a temperature above the melting temperature of the contained polyolefins to form an ester solvent composition further containing dissolved polyamide polymer and a separate immiscible liquid polyolefin phase. The ester solvent composition preferably contains cyclic ester solvents such as ethylene carbonate, propylene carbonate, butylene carbonate, or mixtures thereof. A process is also disclosed to decompose polyester by heating in the presence of a cyclic ester solvent to a temperature above about 215 degrees Celsius. The polyester decomposition products are useful as components of an ester solvent composition for separating polyamide polymers from polyolefin polymers or an industrial solvent.
PCT/US2005/019821 2004-06-04 2005-06-03 Separation of polyolefins from polyamides Ceased WO2005118691A2 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US10/708,693 US7067613B2 (en) 2004-06-04 2004-06-04 Separation of polyolefins from nylons
US10/708,693 2004-06-04
US10/708,479 US20060069170A1 (en) 2004-09-27 2004-09-27 Decomposition of Polyester
US10/708,479 2004-09-27

Publications (2)

Publication Number Publication Date
WO2005118691A2 WO2005118691A2 (en) 2005-12-15
WO2005118691A3 true WO2005118691A3 (en) 2006-02-02

Family

ID=35463435

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/019821 Ceased WO2005118691A2 (en) 2004-06-04 2005-06-03 Separation of polyolefins from polyamides

Country Status (1)

Country Link
WO (1) WO2005118691A2 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3093654B1 (en) * 2019-03-13 2021-07-30 Menneglier Jean Mathieu Method and device for recycling ropes
ES2955715T3 (en) * 2019-07-10 2023-12-05 Redantea S R L Compositions comprising cyclic alkylene carbonates and polyamides, processes for their preparation and uses thereof
IT202100015566A1 (en) * 2021-06-15 2022-12-15 Ind Zingardi S R L FLOSS IN RECYCLED NYLON, AND MANUFACTURING PROCESS.
WO2024133242A1 (en) 2022-12-19 2024-06-27 Loparex Germany Gmbh & Co. Kg Recyclable plastic film
WO2024133243A1 (en) 2022-12-19 2024-06-27 Loparex Germany Gmbh & Co. Kg Recyclable surface-coated plastic film
CN118406282B (en) * 2024-03-15 2025-02-28 化学与精细化工广东省实验室 A method for preparing recycled polymer from waste mixed plastics and recycled polymer
WO2025219922A1 (en) * 2024-04-18 2025-10-23 Università degli Studi di Perugia Process for the degradation of plastic products containing polyesters

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6552123B1 (en) * 1998-12-16 2003-04-22 Kuraray Co., Ltd. Thermoplastic polyvinyl alcohol fibers and method for producing them

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6552123B1 (en) * 1998-12-16 2003-04-22 Kuraray Co., Ltd. Thermoplastic polyvinyl alcohol fibers and method for producing them

Also Published As

Publication number Publication date
WO2005118691A2 (en) 2005-12-15

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