RU93041382A - Method of producing complex diesters of terephthalic acid and diols of complex polyethers - Google Patents

Method of producing complex diesters of terephthalic acid and diols of complex polyethers

Info

Publication number
RU93041382A
RU93041382A RU93041382/04A RU93041382A RU93041382A RU 93041382 A RU93041382 A RU 93041382A RU 93041382/04 A RU93041382/04 A RU 93041382/04A RU 93041382 A RU93041382 A RU 93041382A RU 93041382 A RU93041382 A RU 93041382A
Authority
RU
Russia
Prior art keywords
complex
diols
terephthalic acid
polyethers
diesters
Prior art date
Application number
RU93041382/04A
Other languages
Russian (ru)
Other versions
RU2103257C1 (en
Inventor
Хертенгитайн Ульрих
Нойгебауер Рудольф
Original Assignee
Хехст АГ
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 DE4227299A external-priority patent/DE4227299C1/en
Application filed by Хехст АГ filed Critical Хехст АГ
Publication of RU93041382A publication Critical patent/RU93041382A/en
Application granted granted Critical
Publication of RU2103257C1 publication Critical patent/RU2103257C1/en

Links

Claims (1)

Описан новый способ получения сложных диэфиров терефталевой кислоты и диолов из сложных полиэфиров. Способ заключается в деполимеризации сложного полиэфира в присутствии катализаторов переэтерификации для упомянутого выше сложного полиэфира и в присутствии сложного эфира и последующей переэтерификации реакционной смеси с получением сложного диэфира терефталевой кислоты путем реакции с одноатомным спиртом. С помощью нового способа можно получить исходные мономеры для получения сложных полиэфиров быстро и при мягких условиях реакции.A new process for the preparation of terephthalic acid diesters and polyester diols is described. The method consists in the depolymerization of a polyester in the presence of transesterification catalysts for the above-mentioned polyester and in the presence of an ester and the subsequent transesterification of the reaction mixture to produce a terephthalic diester by reaction with a monohydric alcohol. Using the new method, it is possible to obtain the starting monomers for producing polyesters quickly and under mild reaction conditions.
RU93041382A 1992-08-18 1993-08-17 Method for production of diesters of terephthalic acid and dioles of polyesters RU2103257C1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DEP4227299.8 1992-08-18
DE4227299A DE4227299C1 (en) 1992-08-18 1992-08-18 Process for the preparation of monomeric terephthalic acid diesters and diols from polyesters

Publications (2)

Publication Number Publication Date
RU93041382A true RU93041382A (en) 1996-07-20
RU2103257C1 RU2103257C1 (en) 1998-01-27

Family

ID=6465793

Family Applications (1)

Application Number Title Priority Date Filing Date
RU93041382A RU2103257C1 (en) 1992-08-18 1993-08-17 Method for production of diesters of terephthalic acid and dioles of polyesters

Country Status (27)

Country Link
US (1) US5481024A (en)
EP (1) EP0583743B1 (en)
JP (1) JPH06184053A (en)
KR (1) KR940003915A (en)
CN (1) CN1086206A (en)
AT (1) ATE147718T1 (en)
AU (1) AU660371B2 (en)
BR (1) BR9303407A (en)
CA (1) CA2104253A1 (en)
CZ (1) CZ167593A3 (en)
DE (2) DE4227299C1 (en)
DK (1) DK0583743T3 (en)
ES (1) ES2098603T3 (en)
FI (1) FI933610A (en)
GR (1) GR3022979T3 (en)
HU (1) HUT64937A (en)
IL (1) IL106716A (en)
MA (1) MA22954A1 (en)
MX (1) MX9304997A (en)
MY (1) MY109890A (en)
NO (1) NO180535C (en)
NZ (1) NZ248411A (en)
PL (1) PL300120A1 (en)
RU (1) RU2103257C1 (en)
TR (1) TR28586A (en)
TW (1) TW250484B (en)
ZA (1) ZA935996B (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5710315A (en) * 1994-05-27 1998-01-20 E. I. Du Pont De Nemours And Company Monomer recovery process for contaminated polymers
US5432203A (en) † 1994-12-12 1995-07-11 Eastman Kodak Company Process of recovering components from polyester resins
US5744503A (en) * 1996-02-01 1998-04-28 Hoechst Celanese Corporation Recycling polyester and recovering glycols
US6706843B1 (en) * 1999-10-22 2004-03-16 Teijin Limited Method for separating and recovering dimethyl terephthalate and ethylene glycol from polyester waste
RU2458946C2 (en) * 2005-12-29 2012-08-20 Бп Корпорейшн Норт Америка Инк. Method for ethanolysis of poly(ethylene terephthalate) (pet) with formation of diethylene terephthlate (det)
GB201009969D0 (en) 2010-06-15 2010-07-21 Ecosynth Bvba Transesterification process using mixed salt acetylacetonates catalysts
US9981902B2 (en) 2015-10-23 2018-05-29 Columbia Insurance Company Process for production of an ester and diol from reclaimed carpet material
CN108602974B (en) 2015-11-20 2021-05-04 北卡罗来纳大学教堂山分校 Chemical recovery of polyethylene terephthalate by microwave radiation
CN108004759B (en) * 2017-12-21 2020-05-22 福建荔枝新材料有限公司 Polyester material recycling and surface treatment method by utilizing laser
US20230014630A1 (en) * 2019-12-19 2023-01-19 Eastman Chemical Company Method for producing dimethyl terephthalate from polyester methanolysis depolymerization systems
US11639431B2 (en) * 2020-01-23 2023-05-02 Premirr Plastics Inc. Process and system for depolymerizing plastic
EP4093814A1 (en) * 2020-01-23 2022-11-30 Premirr Plastics Inc. Process and system for depolymerizing waste plastic
CN112076790B (en) * 2020-08-27 2021-07-23 中国科学院青岛生物能源与过程研究所 Zinc catalyst for controllable depolymerization by using polyester material and catalysis method thereof
KR102505758B1 (en) * 2021-03-30 2023-03-06 김수연 Device for preventing water hammering in condensate pipe

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2884443A (en) * 1955-03-19 1959-04-28 Glanzstoff Ag Process for the regeneration of terephthalic acid dimethyl ester from polyethylene terephthalate
US3037050A (en) * 1955-08-05 1962-05-29 Glanzstoff Ag Regeneration of terephthalic acid dimethyl ester from polyethylene terephthalate
DE1003714B (en) * 1956-01-25 1957-03-07 Glanzstoff Ag Process for the degradation of polyethylene terephthalate to dimethyl terephthalate
NL296330A (en) * 1962-08-17 1900-01-01
NL301426A (en) * 1962-12-06
CH550753A (en) * 1970-11-26 1974-06-28 Sir Soc Italiana Resine Spa PROCEDURE FOR THE DEPOLYMERIZATION OF POLYETHYLENTEREPHTHALATE.
US5051528A (en) * 1990-04-24 1991-09-24 Eastman Kodak Company Recovery process for ethylene glycol and dimethylterephthalate

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