ES2100620T3 - Procedimiento continuo para la recuperacion de acido tereftalico de productos de desecho o utilizados de polimeros de polialquilen tereftalato. - Google Patents

Procedimiento continuo para la recuperacion de acido tereftalico de productos de desecho o utilizados de polimeros de polialquilen tereftalato.

Info

Publication number
ES2100620T3
ES2100620T3 ES94120067T ES94120067T ES2100620T3 ES 2100620 T3 ES2100620 T3 ES 2100620T3 ES 94120067 T ES94120067 T ES 94120067T ES 94120067 T ES94120067 T ES 94120067T ES 2100620 T3 ES2100620 T3 ES 2100620T3
Authority
ES
Spain
Prior art keywords
polyalkylene
recovery
polymers
tereftalate
waste products
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 - Lifetime
Application number
ES94120067T
Other languages
English (en)
Inventor
Contessa Socrate
Renato Vosa
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.)
Montefibre SpA
Original Assignee
Montefibre SpA
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 Montefibre SpA filed Critical Montefibre SpA
Application granted granted Critical
Publication of ES2100620T3 publication Critical patent/ES2100620T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/03—Preparation of carboxylic acid esters by reacting an ester group with a hydroxy group

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Polyesters Or Polycarbonates (AREA)
  • Polyoxymethylene Polymers And Polymers With Carbon-To-Carbon Bonds (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)

Abstract

EL PROCESO CONTINUO PARA LA RECUPERACION DEL ACIDO TERFTALICO DE RESIDUOS O PRODUCTOS USADOS DE POLIMEROS DE TERFTALADO DE POLIALQUILENO CONSISTE EN EL SOMETIMIENTO DE DICHOS RESIDUOS O PRODUCTOS USADOS A DOS TRATAMIENTOS CONSECUTIVOS; EL PRIMERO SE LLEVA A CABO CON VAPOR DE METANOL SOBRECALENTADO (METANOLISIS) Y EL SEGUNDO CON AGUA O VAPOR DE AGUA A UNA TEMPERATURA ALTA (HIDROLISIS).
ES94120067T 1994-01-11 1994-12-19 Procedimiento continuo para la recuperacion de acido tereftalico de productos de desecho o utilizados de polimeros de polialquilen tereftalato. Expired - Lifetime ES2100620T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITMI940017A IT1269175B (it) 1994-01-11 1994-01-11 Processo in continuo per il recupero di acido tereftalico dagli scarti o prodotti post-consumo di polimeri di polialchilen tereftalato

Publications (1)

Publication Number Publication Date
ES2100620T3 true ES2100620T3 (es) 1997-06-16

Family

ID=11367471

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94120067T Expired - Lifetime ES2100620T3 (es) 1994-01-11 1994-12-19 Procedimiento continuo para la recuperacion de acido tereftalico de productos de desecho o utilizados de polimeros de polialquilen tereftalato.

Country Status (5)

Country Link
EP (1) EP0662466B1 (es)
AT (1) ATE150440T1 (es)
DE (1) DE69402171T2 (es)
ES (1) ES2100620T3 (es)
IT (1) IT1269175B (es)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0758640B1 (en) * 1995-08-11 1999-12-22 Eastman Kodak Company Recovery of components from polyester resins
DE19646378C2 (de) * 1996-11-09 1999-11-11 Brown John Deutsche Eng Gmbh Verfahren und Vorrichtung zur Rückgewinnung von Dicarbonsäuren und Diolen aus Polyesterabfällen, insbesondere aus Polyethylenterephthalat(PET)-Abfällen beliebigen Polymerisationsgrades
US6472557B1 (en) * 1999-02-10 2002-10-29 Eastman Chemical Company Process for recycling polyesters
US6919383B2 (en) 2001-04-10 2005-07-19 North Carolina State University CO2-assisted deploymerization, purification and recycling of step-growth polymers
CN101565374B (zh) * 2009-04-03 2012-04-25 北京化工大学 一种废聚酯的解聚方法
CN102219924B (zh) * 2011-06-01 2012-08-08 中国人民解放军总后勤部军需装备研究所 一种涤棉混纺织物分离及涤纶再聚合装置
IT201900020784A1 (it) * 2019-11-11 2021-05-11 Gr3N Sagl Apparato e metodo di depolimerizzazione di polimeri
EP4103379A4 (en) * 2020-02-10 2024-06-19 Eastman Chemical Company Chemical recycling of solvolysis glycol column bottoms coproduct streams
CN115052728A (zh) 2020-02-10 2022-09-13 伊士曼化工公司 溶剂分解副产物流的化学回收
CA3174741A1 (en) * 2020-04-13 2021-10-21 Bruce Roger Debruin Chemical recycling of waste plastics from various sources, including wet fines
JP2024506323A (ja) * 2021-02-09 2024-02-13 チア－ウェン・ウ ポリアルキレンベンゼンジカルボキシラート材料の処理方法
LU102949B1 (en) 2022-05-03 2023-11-06 Univ Hamburg Method for the depolymerization of a terephthalate polyester
EP4273190A1 (en) 2022-05-03 2023-11-08 Universität Hamburg Method for the depolymerization of a terephthalate polyester
CN115353904B (zh) * 2022-08-02 2024-02-23 中国矿业大学 一种过热蒸汽体系高效液化塑料垃圾制油的方法及其装置
CN119425519B (zh) * 2024-08-28 2026-01-06 华东理工大学 用于甲醇降解聚对苯二甲酸乙二醇酯的带外循环的超临界反应装置及反应方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4578502A (en) * 1985-01-22 1986-03-25 Cudmore Warner J G Polyethylene terephthalate saponification process
CA2055066A1 (en) * 1990-11-09 1992-05-10 Robert E. Michel Recovery of methyl esters of aromatic acids and glycols from thermoplastic polyester scrap
US5298530A (en) * 1992-11-25 1994-03-29 Eastman Kodak Company Process of recovering components from scrap polyester

Also Published As

Publication number Publication date
DE69402171T2 (de) 1997-09-18
IT1269175B (it) 1997-03-21
ITMI940017A0 (it) 1994-01-11
EP0662466B1 (en) 1997-03-19
ITMI940017A1 (it) 1995-07-11
DE69402171D1 (de) 1997-04-24
ATE150440T1 (de) 1997-04-15
EP0662466A1 (en) 1995-07-12

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