GB610136A - Degradation of aromatic linear polyesters - Google Patents

Degradation of aromatic linear polyesters

Info

Publication number
GB610136A
GB610136A GB963946A GB963946A GB610136A GB 610136 A GB610136 A GB 610136A GB 963946 A GB963946 A GB 963946A GB 963946 A GB963946 A GB 963946A GB 610136 A GB610136 A GB 610136A
Authority
GB
United Kingdom
Prior art keywords
heating
ester
linear polyesters
terephthalate
degradation
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
GB963946A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB963946A priority Critical patent/GB610136A/en
Publication of GB610136A publication Critical patent/GB610136A/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
    • 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

Abstract

Aromatic linear polyesters obtainable by heating glycols of the series HO(CH2)nOH, where n is greater than 1 but not greater than 10, with terephthalic acid or with an ester-forming derivative of the acid, for example an aliphatic or aryl ester or half-ester, an acid halide or an ammonium or amine salt, are p degraded by heating with the glycol used in the manufacture of the polyester or with a terephthalate of the glycol or a low molecular weight polyester formed from the terephthalate. The heating is continued until a homogeneous fluid results, preferably at a temperature about the boiling point of the glycol used, and at atmospheric or elevated pressures.
GB963946A 1946-03-28 1946-03-28 Degradation of aromatic linear polyesters Expired GB610136A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB963946A GB610136A (en) 1946-03-28 1946-03-28 Degradation of aromatic linear polyesters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB963946A GB610136A (en) 1946-03-28 1946-03-28 Degradation of aromatic linear polyesters

Publications (1)

Publication Number Publication Date
GB610136A true GB610136A (en) 1948-10-12

Family

ID=9875872

Family Applications (1)

Application Number Title Priority Date Filing Date
GB963946A Expired GB610136A (en) 1946-03-28 1946-03-28 Degradation of aromatic linear polyesters

Country Status (1)

Country Link
GB (1) GB610136A (en)

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607656A (en) * 1948-03-17 1952-08-19 Ici Ltd Production of close woven cellulose fabrics by dissolving terylene support yarn
DE1052394B (en) * 1956-05-26 1959-03-12 Hoechst Ag Process for the production of terephthalic acid-bis-ethylene glycol ester by degradation vo
US2903477A (en) * 1957-03-27 1959-09-08 Exxon Research Engineering Co Esterification process for producing purified plasticizer esters
US2926189A (en) * 1956-06-08 1960-02-23 Distillers Co Yeast Ltd Esterification of diammonium terephthalate with glycol
US2933476A (en) * 1955-09-30 1960-04-19 Du Pont Polymerization process
US2968538A (en) * 1956-11-15 1961-01-17 Du Pont Delustering of film
US3222299A (en) * 1961-10-16 1965-12-07 Du Pont Process of reclaiming linear terephthalate polyester
DE1247291B (en) * 1964-04-28 1967-08-17 Schwarza Chemiefaser Process and device for the production of dialkyl terephthalates by degradation of polyethylene glycol terephthalates
JPS4978032A (en) * 1972-12-04 1974-07-27
JPS4980320A (en) * 1972-12-04 1974-08-02
US4609680A (en) * 1984-05-25 1986-09-02 Toray Industries, Inc. Process for the depolymerization of polyester scrap
EP0641366A1 (en) * 1992-05-18 1995-03-08 Swig Pty. Ltd. Improved poly ethylene terephthalate decontamination
US5602187A (en) * 1992-05-18 1997-02-11 Swig Pty Ltd. Polyethylene terephthalate decontamination
WO1997020886A1 (en) * 1995-12-07 1997-06-12 Eastman Chemical Company Process including glycolysis and subsequent purification for recycling polyester materials
US5869543A (en) * 1996-10-22 1999-02-09 Zimmer Aktiengesellschaft Process for the synthesis of polyethylene carboxylate from polyethylene carboxylate waste
US9234074B2 (en) 2012-04-20 2016-01-12 Perpetual Global Technologies Limited Flakes of ester mixtures and methods for their production
US9255194B2 (en) 2013-10-15 2016-02-09 International Business Machines Corporation Methods and materials for depolymerizing polyesters
US9714334B2 (en) 2015-01-30 2017-07-25 Resinate Materials Group, Inc. Integrated process for treating recycled PET and PTT materials
US9732026B2 (en) 2012-12-14 2017-08-15 Resinate Technologies, Inc. Reaction products containing hydroxyalkylterephthalates and methods of making and using same
DE102021212695A1 (en) 2021-11-11 2023-05-11 Thyssenkrupp Ag DEVICE AND PROCESS FOR THE PRODUCTION OF A POLYESTER DEPOLYMER, AND DEVICE AND PROCESS FOR THE PRODUCTION OF A POLYESTER
EP4276132A1 (en) 2022-05-10 2023-11-15 Polymetrix AG Monomer recycling of polyesters

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2607656A (en) * 1948-03-17 1952-08-19 Ici Ltd Production of close woven cellulose fabrics by dissolving terylene support yarn
US2933476A (en) * 1955-09-30 1960-04-19 Du Pont Polymerization process
DE1052394B (en) * 1956-05-26 1959-03-12 Hoechst Ag Process for the production of terephthalic acid-bis-ethylene glycol ester by degradation vo
US2926189A (en) * 1956-06-08 1960-02-23 Distillers Co Yeast Ltd Esterification of diammonium terephthalate with glycol
US2968538A (en) * 1956-11-15 1961-01-17 Du Pont Delustering of film
US2903477A (en) * 1957-03-27 1959-09-08 Exxon Research Engineering Co Esterification process for producing purified plasticizer esters
US3222299A (en) * 1961-10-16 1965-12-07 Du Pont Process of reclaiming linear terephthalate polyester
DE1247291B (en) * 1964-04-28 1967-08-17 Schwarza Chemiefaser Process and device for the production of dialkyl terephthalates by degradation of polyethylene glycol terephthalates
JPS4978032A (en) * 1972-12-04 1974-07-27
JPS4980320A (en) * 1972-12-04 1974-08-02
JPS553443B2 (en) * 1972-12-04 1980-01-25
JPS5619464B2 (en) * 1972-12-04 1981-05-07
US4609680A (en) * 1984-05-25 1986-09-02 Toray Industries, Inc. Process for the depolymerization of polyester scrap
EP0641366A4 (en) * 1992-05-18 1995-05-31 Petwest Pty Ltd Improved poly ethylene terephthalate decontamination.
US5602187A (en) * 1992-05-18 1997-02-11 Swig Pty Ltd. Polyethylene terephthalate decontamination
EP0641366A1 (en) * 1992-05-18 1995-03-08 Swig Pty. Ltd. Improved poly ethylene terephthalate decontamination
WO1997020886A1 (en) * 1995-12-07 1997-06-12 Eastman Chemical Company Process including glycolysis and subsequent purification for recycling polyester materials
US5869543A (en) * 1996-10-22 1999-02-09 Zimmer Aktiengesellschaft Process for the synthesis of polyethylene carboxylate from polyethylene carboxylate waste
US9234074B2 (en) 2012-04-20 2016-01-12 Perpetual Global Technologies Limited Flakes of ester mixtures and methods for their production
EP2838941B1 (en) * 2012-04-20 2019-11-06 Perpetual Global Technologies Limited Flakes of ester mixtures and methods for their production
US9732026B2 (en) 2012-12-14 2017-08-15 Resinate Technologies, Inc. Reaction products containing hydroxyalkylterephthalates and methods of making and using same
US9914816B2 (en) 2013-10-15 2018-03-13 International Business Machines Corporation Methods and materials for depolymerizing polyesters
US9255194B2 (en) 2013-10-15 2016-02-09 International Business Machines Corporation Methods and materials for depolymerizing polyesters
US9752005B2 (en) 2015-01-30 2017-09-05 Resinate Materials Group, Inc. Integrated process for treating recycled streams of PET and PTT
US9714334B2 (en) 2015-01-30 2017-07-25 Resinate Materials Group, Inc. Integrated process for treating recycled PET and PTT materials
US10119006B2 (en) 2015-01-30 2018-11-06 Resinate Materials Group, Inc. Integrated process for treating recycled streams of PET and PTT
DE102021212695A1 (en) 2021-11-11 2023-05-11 Thyssenkrupp Ag DEVICE AND PROCESS FOR THE PRODUCTION OF A POLYESTER DEPOLYMER, AND DEVICE AND PROCESS FOR THE PRODUCTION OF A POLYESTER
WO2023083692A2 (en) 2021-11-11 2023-05-19 Uhde Inventa-Fischer Gmbh Device and method for producing a polyester depolymerizate, and device and method for producing a polyester
EP4276132A1 (en) 2022-05-10 2023-11-15 Polymetrix AG Monomer recycling of polyesters

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