GB1017605A – Improvements in or relating to the preparation of dialkyl terephthalates
– Google Patents
GB1017605A – Improvements in or relating to the preparation of dialkyl terephthalates
– Google Patents
Improvements in or relating to the preparation of dialkyl terephthalates
Info
Publication number
GB1017605A
GB1017605A
GB27542/62A
GB2754262A
GB1017605A
GB 1017605 A
GB1017605 A
GB 1017605A
GB 27542/62 A
GB27542/62 A
GB 27542/62A
GB 2754262 A
GB2754262 A
GB 2754262A
GB 1017605 A
GB1017605 A
GB 1017605A
Authority
GB
United Kingdom
Prior art keywords
dimethyl terephthalate
terephthalate
zone
relating
preparation
Prior art date
1961-08-17
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
GB27542/62A
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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.)
1961-08-17
Filing date
1962-07-18
Publication date
1966-01-19
1962-07-18
Application filed by Eastman Kodak Co
filed
Critical
Eastman Kodak Co
1966-01-19
Publication of GB1017605A
publication
Critical
patent/GB1017605A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C67/00—Preparation of carboxylic acid esters
C07C67/08—Preparation of carboxylic acid esters by reacting carboxylic acids or symmetrical anhydrides with the hydroxy or O-metal group of organic compounds
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C67/00—Preparation of carboxylic acid esters
C07C67/48—Separation; Purification; Stabilisation; Use of additives
C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
C07C67/54—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation
Abstract
Dimethyl terephthalate is prepared by introducing terephthalic acid into a reaction zone, which is at a temperature above the atmospheric boiling-point of dimethyl terephthalate and a pressure not above 300 p.s.i.g., wherein an amount of dimethyl terephthalate in excess of 50 wt. per cent of the contents of the zone is continuously maintained; introducing methanol into a reaction zone, which is at a temperature of at least 250 DEG C. and a pressure not above 300 p.s.i.g. and which contains methyl hydrogen terephthalate from the previous reaction, and removing dimethyl terephthalate from the latter zone as a vapour. The process is preferably a continuous one. Diethyl terephthalate may be produced analogously.
GB27542/62A
1961-08-17
1962-07-18
Improvements in or relating to the preparation of dialkyl terephthalates
Expired
GB1017605A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US132087A
US3227743A
(en)
1961-08-17
1961-08-17
Production of dimethyl terephthalate
Publications (1)
Publication Number
Publication Date
GB1017605A
true
GB1017605A
(en)
1966-01-19
Family
ID=22452402
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB27542/62A
Expired
GB1017605A
(en)
1961-08-17
1962-07-18
Improvements in or relating to the preparation of dialkyl terephthalates
Country Status (3)
Country
Link
US
(1)
US3227743A
(en)
GB
(1)
GB1017605A
(en)
NL
(1)
NL282032A
(en)
Families Citing this family (10)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3396087A
(en)
*
1966-01-10
1968-08-06
Exxon Research Engineering Co
Dimethylterephthalate recovery from paraxylene feed
US3927982A
(en)
*
1970-03-18
1975-12-23
Du Pont
Recirculating apparatus for continuous esterification reactions
DE2224869C3
(en)
*
1972-05-20
1975-12-11
Chemische Werke Huels Ag, 4370 Marl
Process for the production of dimethyl terephthalate
US3980441A
(en)
*
1972-05-20
1976-09-14
Chemische Werke Huls Aktiengesellschaft
Apparatus for the production of dimethyl terephthalate by the esterification of terephthalic acid
ES419510A1
(en)
*
1972-12-15
1976-04-16
Huels Chemische Werke Ag
Process for the esterification of terephthalic acid in the gas phase
US4015943A
(en)
*
1972-12-15
1977-04-05
Chemische Werke Huls Aktiengesellschaft
Apparatus for the esterification of terephthalic acid in the gas phase
US5391263A
(en)
*
1994-01-26
1995-02-21
E. I. Du Pont De Nemours And Company
Process for the separation of glycols from dimethyl terephthalate
US6211398B1
(en)
1997-10-03
2001-04-03
Eastman Chemical Company
Process for the preparation of dialkyl esters of naphthalenedicarboxylic acids
DE10316466A1
(en)
*
2003-04-09
2004-10-28
Basf Ag
Cooling and cleaning of gas flows
DE102004013967A1
(en)
2004-03-19
2005-10-06
Basf Ag
Cooling and cleaning of gas streams
Family Cites Families (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US1595602A
(en)
*
1924-12-16
1926-08-10
Rainey Wood Process Corp
Apparatus for treating gas liquor
US2926074A
(en)
*
1954-04-30
1960-02-23
Phillips Petroleum Co
Apparatus for production of substituted pyridines
US2834801A
(en)
*
1954-09-22
1958-05-13
Exxon Research Engineering Co
Method of esterification and purification of higher alcohols
AT195917B
(en)
*
1955-12-12
1958-02-25
Glanzstoff Ag
Process for purifying dimethyl terephthalate
US2873292A
(en)
*
1957-05-31
1959-02-10
Standard Oil Co
Preparation of methyl and ethyl esters of aromatic carboxylic acids
US3076019A
(en)
*
1959-12-21
1963-01-29
Standard Oil Co
Process for production of dimethyl terephthalate
0
NL
NL282032D
patent/NL282032A/xx
unknown
1961
1961-08-17
US
US132087A
patent/US3227743A/en
not_active
Expired – Lifetime
1962
1962-07-18
GB
GB27542/62A
patent/GB1017605A/en
not_active
Expired
Also Published As
Publication number
Publication date
NL282032A
(en)
US3227743A
(en)
1966-01-04
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