WO2006039872A8 - The mehod of chemical recycling of polyethylene terephthalate waste - Google Patents
The mehod of chemical recycling of polyethylene terephthalate wasteInfo
- Publication number
- WO2006039872A8 WO2006039872A8 PCT/CZ2005/000076 CZ2005000076W WO2006039872A8 WO 2006039872 A8 WO2006039872 A8 WO 2006039872A8 CZ 2005000076 W CZ2005000076 W CZ 2005000076W WO 2006039872 A8 WO2006039872 A8 WO 2006039872A8
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- hydrolysis
- polyethylene terephthalate
- stage
- mother liquor
- chemical recycling
- Prior art date
Links
- 229920000139 polyethylene terephthalate Polymers 0.000 title abstract 4
- 239000005020 polyethylene terephthalate Substances 0.000 title abstract 4
- 239000002699 waste material Substances 0.000 title abstract 3
- -1 polyethylene terephthalate Polymers 0.000 title abstract 2
- 238000004064 recycling Methods 0.000 title abstract 2
- 239000000126 substance Substances 0.000 title abstract 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract 9
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 abstract 8
- 230000007062 hydrolysis Effects 0.000 abstract 5
- 238000006460 hydrolysis reaction Methods 0.000 abstract 5
- 239000012452 mother liquor Substances 0.000 abstract 3
- 239000000047 product Substances 0.000 abstract 3
- 239000013078 crystal Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 2
- 238000000926 separation method Methods 0.000 abstract 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract 2
- 239000012467 final product Substances 0.000 abstract 1
- 239000013067 intermediate product Substances 0.000 abstract 1
- 239000007787 solid Substances 0.000 abstract 1
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
- C08J11/14—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 steam or water
-
- 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
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
Abstract
The method of chemical recycling of polyethylene terephthalate (PET) waste to terephthalic acid (TA) and/or ethylene glycol (EG) by use of a multistage hydrolysis of waste PET for the purpose of its depolymerization and next successive separation of products formed in the process of multistage hydrolysis, where the multistage hydrolysis is executed at least in two stages, while from the resulting product of the first stage of the multistage hydrolysis is at first separated the solid crystallic part, where the second product is mother liquor. Crystallic part are formed crystals of TA together with intermediate products which is then introduced together with water into the second stage of two- stage hydrolysis where after its termination the formed crystals of raw TA and secondary mother liquor are separated from the final product. EG may be obtained by separation of water from the residual and secondary mother liquor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CZ20041032A CZ20041032A3 (en) | 2004-10-13 | 2004-10-13 | Process of chemical recycling waste polyethyleneterephthalate |
| CZPV2004-1032 | 2004-10-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2006039872A1 WO2006039872A1 (en) | 2006-04-20 |
| WO2006039872A8 true WO2006039872A8 (en) | 2006-11-16 |
Family
ID=35355250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CZ2005/000076 WO2006039872A1 (en) | 2004-10-13 | 2005-10-11 | The mehod of chemical recycling of polyethylene terephthalate waste |
Country Status (2)
| Country | Link |
|---|---|
| CZ (1) | CZ20041032A3 (en) |
| WO (1) | WO2006039872A1 (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ300751B6 (en) * | 2003-09-24 | 2009-07-29 | Siemens Aktiengesellschaft | Turning gear for turning machine rotors |
| CZ299908B6 (en) | 2007-07-13 | 2008-12-29 | Ústav chemických procesu Akademie ved CR | Method of waste polyethyleneterephthalate chemical depolymerization |
| EP2719529B1 (en) | 2012-10-10 | 2017-01-11 | Armacell Enterprise GmbH & Co. KG | Prevention of depolymerization of polyalkylene terephthalate in laminated structures |
| EP3090015A1 (en) * | 2013-12-31 | 2016-11-09 | BP Corporation North America Inc. | Method for forming an aromatic diacid and/or an aromatic diacid precursor from a polyester-containing feedstock |
| CZ307751B6 (en) | 2018-03-12 | 2019-04-10 | JBPV s.r.o. | A method of producing terephthalic acid from waste polyethylene terephthalate |
| GB2598077A (en) * | 2019-08-13 | 2022-02-23 | Poseidon Plastics Ltd | Polymer recycling |
| GB2586249B (en) | 2019-08-13 | 2021-09-22 | Poseidon Plastics Ltd | Polymer recycling |
| JP2023544008A (en) * | 2021-07-19 | 2023-10-19 | エルジー・ケム・リミテッド | Monomer composition for synthesizing recycled plastics, method for producing the same, recycled plastics, molded products, and plasticizer compositions using the same |
| CN116082541B (en) * | 2022-11-03 | 2024-10-22 | 重庆市化工研究院有限公司 | Hydrolysis method of polyvinyl dimethyl phosphonate |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4605762A (en) * | 1982-04-23 | 1986-08-12 | Celanese Mexicana S.A. | Depolymerization of condensation polymers |
| US5095145A (en) * | 1990-11-05 | 1992-03-10 | Amoco Corporation | Preparation of purified terephthalic acid from waste polyethylene terephthalate |
| CZ2000969A3 (en) * | 2000-03-17 | 2001-08-15 | Milan Ing. Šírek | A method of chemical recycling of polyethylene terephthalate waste |
-
2004
- 2004-10-13 CZ CZ20041032A patent/CZ20041032A3/en not_active IP Right Cessation
-
2005
- 2005-10-11 WO PCT/CZ2005/000076 patent/WO2006039872A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| CZ296280B6 (en) | 2006-02-15 |
| CZ20041032A3 (en) | 2006-02-15 |
| WO2006039872A1 (en) | 2006-04-20 |
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