GB1471093A - Method for recovering terephthalic acid and ethylene glycol from polyester materials - Google Patents

Method for recovering terephthalic acid and ethylene glycol from polyester materials

Info

Publication number
GB1471093A
GB1471093A GB806775A GB806775A GB1471093A GB 1471093 A GB1471093 A GB 1471093A GB 806775 A GB806775 A GB 806775A GB 806775 A GB806775 A GB 806775A GB 1471093 A GB1471093 A GB 1471093A
Authority
GB
United Kingdom
Prior art keywords
terephthalic acid
ethylene glycol
polyester materials
recovering terephthalic
polyester material
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
Application number
GB806775A
Other languages
English (en)
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.)
Safetech Inc
Original Assignee
Safetech Inc
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 Safetech Inc filed Critical Safetech Inc
Publication of GB1471093A publication Critical patent/GB1471093A/en
Expired 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/09—Preparation of carboxylic acids or their salts, halides or anhydrides from carboxylic acid esters or lactones
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F13/00—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like
    • D01F13/04—Recovery of starting material, waste material or solvents during the manufacture of artificial filaments or the like of synthetic polymers
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
    • D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
    • D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
    • D01F6/62—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyesters
    • 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
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • Y02P70/62—Manufacturing or production processes characterised by the final manufactured product related technologies for production or treatment of textile or flexible materials or products thereof, including footwear

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Sustainable Development (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
GB806775A 1974-02-26 1975-02-26 Method for recovering terephthalic acid and ethylene glycol from polyester materials Expired GB1471093A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/446,014 US3952053A (en) 1974-02-26 1974-02-26 Method for recovering terephthalic acid and ethylene glycol from polyester materials

Publications (1)

Publication Number Publication Date
GB1471093A true GB1471093A (en) 1977-04-21

Family

ID=23771004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB806775A Expired GB1471093A (en) 1974-02-26 1975-02-26 Method for recovering terephthalic acid and ethylene glycol from polyester materials

Country Status (6)

Country Link
US (1) US3952053A (cg-RX-API-DMAC7.html)
JP (1) JPS50117742A (cg-RX-API-DMAC7.html)
DE (1) DE2508819A1 (cg-RX-API-DMAC7.html)
FR (1) FR2262016B3 (cg-RX-API-DMAC7.html)
GB (1) GB1471093A (cg-RX-API-DMAC7.html)
IT (1) IT1029844B (cg-RX-API-DMAC7.html)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542239A (en) * 1981-11-18 1985-09-17 Board Of Control Of Michigan Technological University Process for recovering terephthalic acid from waste polyethylene terephthalate

Families Citing this family (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4605762A (en) * 1982-04-23 1986-08-12 Celanese Mexicana S.A. Depolymerization of condensation polymers
US5045122A (en) * 1989-12-14 1991-09-03 Eastman Kodak Company Ester hydrolysis and depolymerization of polyester and polycarbonate polymers
FR2672049A1 (fr) * 1991-01-30 1992-07-31 Benzaria Jacques Procede de fabrication de terephtalate de metal alcalin ou alcalino-terreux ou de l'acide terephilique de purete elevee.
WO1993001525A1 (en) * 1991-07-01 1993-01-21 Fiber Industries, Inc. Recovery of polyester from spent film
US5328982A (en) * 1992-11-02 1994-07-12 Eastman Chemical Company Depolymerization of substantially amorphous polyesters
US5580905A (en) * 1994-04-28 1996-12-03 United Resource Recovery Corporation Process for recycling polyesters
US5710315A (en) * 1994-05-27 1998-01-20 E. I. Du Pont De Nemours And Company Monomer recovery process for contaminated polymers
US5532404A (en) * 1994-05-27 1996-07-02 E. I. Du Pont De Nemours And Company Monomer recovery process for contaminated polymers
US6031128A (en) * 1995-12-30 2000-02-29 Sunkyong Industries Co., Ltd. Process for manufacturing terephthalic acid
EP0871603B1 (en) 1995-12-30 2001-09-05 Sunkyong Industries Co., Ltd. Process for manufacturing terephthalic acid
US6075163A (en) * 1995-12-30 2000-06-13 Sunkyong Industries Co., Ltd. Process for manufacturing terephthalic acid
US5958987A (en) 1996-04-10 1999-09-28 The Coca-Cola Company Process for separating polyester from other materials
FR2774374B1 (fr) * 1998-01-30 2001-09-21 Tredi Procede pour la production de terephtalate d'un metal alcalin purifie, issu de produits de saponification de polyterephtalates d'alkylene de recuperation
DE60239100D1 (de) * 2001-06-19 2011-03-17 United Resource Recovery Corp Verfahren zur trennung von polyester von anderen materialien
US7098299B1 (en) * 2005-03-16 2006-08-29 United Resource Recovery Corporation Separation of contaminants from polyester materials
GB201002824D0 (en) 2010-02-19 2010-04-07 Temasek Polytechnic A method of preparing a substrate for immobilization of functional substances thereon and the substrate obtained therefrom
DE102012220498A1 (de) * 2012-11-09 2014-05-15 Aquafil Engineering Gmbh Verfahren und Vorrichtung zur Behandlung von Polymeren
US9550713B1 (en) 2015-07-09 2017-01-24 Loop Industries, Inc. Polyethylene terephthalate depolymerization
DE102018122210B4 (de) 2018-09-12 2023-06-29 Rittec Umwelttechnik Gmbh Verfahren und Verwendung einer Vorrichtung zur Wiederaufarbeitung von Polyalkylenterephthalat enthaltenden Abfällen
US11161960B2 (en) 2019-05-20 2021-11-02 Octal Saoc Fzc Process for reclamation of polyester by reactor addition
US12570793B2 (en) 2019-05-20 2026-03-10 Octal Saoc Fzc Process for formation of additive-containing polyester
US11518865B2 (en) 2019-05-20 2022-12-06 Octal Saoc Fzc Process for reclamation of polyester by reactor addition
DE102019135578A1 (de) 2019-12-20 2021-06-24 Rittec Umwelttechnik Gmbh Verfahren, Vorrichtung und Verwendung zur Wiederaufarbeitung
DE102020208040B4 (de) 2020-06-29 2024-08-22 Zf Friedrichshafen Ag Verstellbare Prüflingsaufnahme für einen Antriebsstrangprüfstand und Antriebsstrangprüfstand
US12453994B2 (en) 2023-03-31 2025-10-28 Nexus Circular LLC Hydrocarbon compositions derived from pyrolysis of post-consumer and/or post-industrial plastics and methods of making and use thereof
US12595424B2 (en) 2023-03-31 2026-04-07 Nexus Circular LLC Hydrocarbon compositions derived from pyrolysis of post-consumer and/or post-industrial plastics and methods of making and use thereof
US12435278B2 (en) 2023-03-31 2025-10-07 Nexus Circular LLC Hydrocarbon compositions derived from pyrolysis of post-consumer and/or post-industrial plastics and methods of making and use thereof
US12473506B2 (en) 2023-03-31 2025-11-18 Nexus Circular LLC Hydrocarbon compositions derived from pyrolysis of post-consumer and/or post-industrial plastics and methods of making and use thereof
US12453993B2 (en) 2023-03-31 2025-10-28 Nexus Circular LLC Hydrocarbon compositions derived from pyrolysis of post-consumer and/or post-industrial plastics and methods of making and use thereof
US20250243410A1 (en) 2024-01-29 2025-07-31 Nexus Circular LLC Systems and methods for making hydrocarbon compositions derived from pyrolysis of post-consumer and/or post-industrial plastics

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1061772B (de) * 1957-02-08 1959-07-23 Rhodiaceta Verfahren zur Herstellung von Terephthalsaeure durch Abbau von Polymethylenterephthalaten
NL250015A (cg-RX-API-DMAC7.html) * 1959-04-18 1900-01-01
NL250016A (cg-RX-API-DMAC7.html) * 1959-04-18 1900-01-01
US3240804A (en) * 1960-06-27 1966-03-15 Standard Oil Co Decolorization of aqueous solutions of phthalic acids utilizing demetallized activated carbon
US3222299A (en) * 1961-10-16 1965-12-07 Du Pont Process of reclaiming linear terephthalate polyester
US3317519A (en) * 1965-05-21 1967-05-02 Allied Chem Simultaneous depolymerization of polycaproamide and polyester with recovery of caprolactam
US3388156A (en) * 1966-02-24 1968-06-11 Teijin Ltd Method of recovering crude terephthalic acid
DE1299627B (de) * 1966-08-31 1969-07-24 Dynamit Nobel Ag Verfahren zur Herstellung von reinster Terepthalsaeure
US3488298A (en) * 1966-12-01 1970-01-06 Eastman Kodak Co Polyester scrap recovery processes

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4542239A (en) * 1981-11-18 1985-09-17 Board Of Control Of Michigan Technological University Process for recovering terephthalic acid from waste polyethylene terephthalate

Also Published As

Publication number Publication date
JPS50117742A (cg-RX-API-DMAC7.html) 1975-09-16
IT1029844B (it) 1979-03-20
FR2262016B3 (cg-RX-API-DMAC7.html) 1977-11-04
DE2508819A1 (de) 1975-08-28
US3952053A (en) 1976-04-20
FR2262016A1 (cg-RX-API-DMAC7.html) 1975-09-19

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Legal Events

Date Code Title Description
CSNS Application of which complete specification have been accepted and published, but patent is not sealed