MX157433A - CONTINUOUS PROCEDURE FOR OBTAINING PURE TEREFTALIC ACID AND GLYCOL FROM POLYETHYLENE TEREFTALATE WASTE - Google Patents
CONTINUOUS PROCEDURE FOR OBTAINING PURE TEREFTALIC ACID AND GLYCOL FROM POLYETHYLENE TEREFTALATE WASTEInfo
- Publication number
- MX157433A MX157433A MX18778581A MX18778581A MX157433A MX 157433 A MX157433 A MX 157433A MX 18778581 A MX18778581 A MX 18778581A MX 18778581 A MX18778581 A MX 18778581A MX 157433 A MX157433 A MX 157433A
- Authority
- MX
- Mexico
- Prior art keywords
- glycol
- terephthalic acid
- waste
- procedure
- obtaining pure
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C29/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring
- C07C29/09—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis
- C07C29/095—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom not belonging to a six-membered aromatic ring by hydrolysis of esters of organic acids
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Page 1 CONTINUOUS PROCEDURE FOR OBTAINING PURE TEREPHTHALIC ACID AND GLYCOL STARTING FROM POLYETHYLENE TEREPHTHALATE WASTE of the invention A procedure is described to obtain pure terephthalic acid and glycol, which consists in carrying out, in a continuous manner and in the presence of decolorizing carbon, an aqueous and neutral hydrolysis of polyethylene terephthalate waste, under high temperature and pressure conditions, continuously filtering the product at the hydrolysis temperature and crystallizing the terephthalic acid, while the mother liquors are subjected to distillation in order to obtain the glycol. Basis of the invention Field of the invention The invention under consideration is related to a continuous method which permits-obtaining pure terephthalic acid and glycol and more specifically, it is related with a procedure which utilizes as a raw material polyethylene terephthalate waste and in which it is not necessary to first separate the crude or impure terephthalic acid in order to purify it in a subsequent stage by means of one
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX18778581A MX157433A (en) | 1981-06-12 | 1981-06-12 | CONTINUOUS PROCEDURE FOR OBTAINING PURE TEREFTALIC ACID AND GLYCOL FROM POLYETHYLENE TEREFTALATE WASTE |
BR8203311A BR8203311A (en) | 1981-06-12 | 1982-06-04 | CONTINUOUS PROCESS FOR OBTAINING PURE TEREFTALIC ACID AND GLYCOL |
DE19823221341 DE3221341A1 (en) | 1981-06-12 | 1982-06-05 | Continuous process for producing pure terephthalic acid and pure glycol, starting from polyethylene terephthalate waste |
CA000404984A CA1188708A (en) | 1981-06-12 | 1982-06-11 | Continuous procedure for obtaining pure terephthalic acid and glycol starting from polyethylene terephthalate waste |
FR8210264A FR2507595A1 (en) | 1981-06-12 | 1982-06-11 | CONTINUOUS PROCESS TO OBTAIN TEREPHTHALIC ACID AND PURE GLYCOL FROM RESIDUAL POLYETHYLENE TEREPHTHALATE |
JP9942082A JPS584735A (en) | 1981-06-12 | 1982-06-11 | Continuous recovery of pure terephthalic acid and glycol from waste polyethylene terephthalate |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
MX18778581A MX157433A (en) | 1981-06-12 | 1981-06-12 | CONTINUOUS PROCEDURE FOR OBTAINING PURE TEREFTALIC ACID AND GLYCOL FROM POLYETHYLENE TEREFTALATE WASTE |
Publications (1)
Publication Number | Publication Date |
---|---|
MX157433A true MX157433A (en) | 1988-11-23 |
Family
ID=19747646
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
MX18778581A MX157433A (en) | 1981-06-12 | 1981-06-12 | CONTINUOUS PROCEDURE FOR OBTAINING PURE TEREFTALIC ACID AND GLYCOL FROM POLYETHYLENE TEREFTALATE WASTE |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS584735A (en) |
BR (1) | BR8203311A (en) |
CA (1) | CA1188708A (en) |
DE (1) | DE3221341A1 (en) |
FR (1) | FR2507595A1 (en) |
MX (1) | MX157433A (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60163844A (en) * | 1984-02-06 | 1985-08-26 | Mitsubishi Chem Ind Ltd | Preparation of dimethyl terephthalate |
FR2672049A1 (en) * | 1991-01-30 | 1992-07-31 | Benzaria Jacques | PROCESS FOR THE PRODUCTION OF ALKALI OR ALKALINE EARTH METAL TEREPHTHALATE OR HIGH PURITY TEREPHILIC ACID |
JP3659717B2 (en) | 1995-11-30 | 2005-06-15 | 株式会社神戸製鋼所 | Chemical plant waste decomposition method and apparatus |
DE19605474C2 (en) * | 1996-02-14 | 1997-12-18 | Ems Polyloy Gmbh | Process for the preparation of partially aromatic copolyamides from aromatic dicarboxylic acid esters |
AUPP598098A0 (en) * | 1998-09-17 | 1998-10-08 | West, Simon Michael | Process for decontaminating ethanediol |
JP2000159925A (en) | 1998-11-30 | 2000-06-13 | Takeda Chem Ind Ltd | Equipment for decomposing and recovering polyurethane resin |
JP4937521B2 (en) * | 2005-03-31 | 2012-05-23 | 三井化学株式会社 | Method for recovering high-purity monomer from polyester, high-purity monomer, polyester |
CN101979422B (en) * | 2010-10-15 | 2012-02-22 | 济南大学 | Method for preparing environmentally-friendly macromoleclar polymer and application |
JP2012219210A (en) * | 2011-04-12 | 2012-11-12 | As R&D合同会社 | Method for producing low-molecular polymer, low-molecular polymer obtained by the method, and coating material, powder coating material, adhesive, fiber and nonwoven fabric using the polymer |
WO2019140245A1 (en) * | 2018-01-12 | 2019-07-18 | Tyton Biosciences, Llc | Methods for recycling cotton and polyester fibers from waste textiles |
TWI694064B (en) * | 2018-09-26 | 2020-05-21 | 遠東新世紀股份有限公司 | Method for manufacturing terephthalic acid and system thereof |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1015422B (en) * | 1953-07-17 | 1957-09-12 | Ici Ltd | Process for purifying terephthalic acid |
DE1061772B (en) * | 1957-02-08 | 1959-07-23 | Rhodiaceta | Process for the production of terephthalic acid by the degradation of polymethylene terephthalates |
-
1981
- 1981-06-12 MX MX18778581A patent/MX157433A/en unknown
-
1982
- 1982-06-04 BR BR8203311A patent/BR8203311A/en unknown
- 1982-06-05 DE DE19823221341 patent/DE3221341A1/en active Granted
- 1982-06-11 JP JP9942082A patent/JPS584735A/en active Granted
- 1982-06-11 FR FR8210264A patent/FR2507595A1/en active Pending
- 1982-06-11 CA CA000404984A patent/CA1188708A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR2507595A1 (en) | 1982-12-17 |
CA1188708A (en) | 1985-06-11 |
DE3221341A1 (en) | 1982-12-30 |
DE3221341C2 (en) | 1992-05-07 |
BR8203311A (en) | 1983-05-24 |
JPH0316328B2 (en) | 1991-03-05 |
JPS584735A (en) | 1983-01-11 |
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