GB1319021A – Process for preparing methylterephthalic and methylisophthalic acids
– Google Patents
GB1319021A – Process for preparing methylterephthalic and methylisophthalic acids
– Google Patents
Process for preparing methylterephthalic and methylisophthalic acids
Info
Publication number
GB1319021A
GB1319021A
GB1254571A
GB1254571A
GB1319021A
GB 1319021 A
GB1319021 A
GB 1319021A
GB 1254571 A
GB1254571 A
GB 1254571A
GB 1254571 A
GB1254571 A
GB 1254571A
GB 1319021 A
GB1319021 A
GB 1319021A
Authority
GB
United Kingdom
Prior art keywords
cobalt
compound
manganese
bromine
weight
Prior art date
1970-05-01
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
GB1254571A
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.)
Teijin Ltd
Original Assignee
Teijin 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.)
1970-05-01
Filing date
1971-04-30
Publication date
1973-05-31
1971-04-30
Application filed by Teijin Ltd
filed
Critical
Teijin Ltd
1973-05-31
Publication of GB1319021A
publication
Critical
patent/GB1319021A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
B—PERFORMING OPERATIONS; TRANSPORTING
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
B01J31/04—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
C07C51/21—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen
C07C51/255—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting
C07C51/265—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation with molecular oxygen of compounds containing six-membered aromatic rings without ring-splitting having alkyl side chains which are oxidised to carboxyl groups
B—PERFORMING OPERATIONS; TRANSPORTING
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
B01J2231/70—Oxidation reactions, e.g. epoxidation, (di)hydroxylation, dehydrogenation and analogues
B—PERFORMING OPERATIONS; TRANSPORTING
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
B01J2531/70—Complexes comprising metals of Group VII (VIIB) as the central metal
B01J2531/72—Manganese
B—PERFORMING OPERATIONS; TRANSPORTING
B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
B01J2531/80—Complexes comprising metals of Group VIII as the central metal
B01J2531/84—Metals of the iron group
B01J2531/845—Cobalt
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
Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y02P20/00—Technologies relating to chemical industry
Y02P20/50—Improvements relating to the production of bulk chemicals
Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts
Abstract
1319021 Methyl-tere- and iso-phthalic acids TEIJIN Ltd 30 April 1971 [1 May 1970] 12545/71 Heading C2C A process for preparing methyl terephthalic acid and 4-methyl-isophthalic acid comprises oxidizing pseudocumene in 3 to 25 parts by weight per part by weight of pseudocumene, of acetic acid as solvent, with molecular oxygen under an oxygen partial pressure of not less than 0À2 atmosphere at a reaction temperature (T‹ C.) of 100 to 220‹C. in the presence of a catalyst comprising a cobalt compound, bromine or a bromine compound and optionally a manganese compound, the atomic ratio of manganese in the manganese compound (if present) to cobalt in the cobalt compound being not more than 4 : 1, the manganese in the manganese compound having the same valency as the cobalt in the cobalt compound and the cobalt, bromine and manganese compounds being all soluble in acetic acid under the oxidation conditions, the amount of catalyst being defined by the following equations wherein A is the ratio of the weight of cobalt in the cobalt compound, or the total weight of the cobalt in the cobalt compound and the manganese in the manganese compound, to the total weight of the pseudocumene and the acetic acid and B is the ratio of the gram-atoms of bromine or bromine in the bromine compound to the gram-atoms of the cobalt in the cobalt compound or the combined gram-atoms of the cobalt in the cobalt compound and the manganese in the manganese compound. Examples are furnished.
GB1254571A
1970-05-01
1971-04-30
Process for preparing methylterephthalic and methylisophthalic acids
Expired
GB1319021A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
JP45037252A
JPS4919274B1
(en)
1970-05-01
1970-05-01
Publications (1)
Publication Number
Publication Date
GB1319021A
true
GB1319021A
(en)
1973-05-31
Family
ID=12492435
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB1254571A
Expired
GB1319021A
(en)
1970-05-01
1971-04-30
Process for preparing methylterephthalic and methylisophthalic acids
Country Status (7)
Country
Link
JP
(1)
JPS4919274B1
(en)
BE
(1)
BE766553A
(en)
CA
(1)
CA945997A
(en)
DE
(1)
DE2121781A1
(en)
FR
(1)
FR2091099A5
(en)
GB
(1)
GB1319021A
(en)
NL
(1)
NL7105904A
(en)
Families Citing this family (1)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
JPS5336066U
(en)
*
1976-09-02
1978-03-30
1970
1970-05-01
JP
JP45037252A
patent/JPS4919274B1/ja
active
Pending
1971
1971-04-29
NL
NL7105904A
patent/NL7105904A/xx
unknown
1971-04-30
GB
GB1254571A
patent/GB1319021A/en
not_active
Expired
1971-04-30
CA
CA111,895A
patent/CA945997A/en
not_active
Expired
1971-04-30
BE
BE766553A
patent/BE766553A/en
unknown
1971-05-03
DE
DE19712121781
patent/DE2121781A1/de
active
Pending
1971-05-03
FR
FR7115821A
patent/FR2091099A5/fr
not_active
Expired
Also Published As
Publication number
Publication date
CA945997A
(en)
1974-04-23
DE2121781A1
(en)
1971-12-16
JPS4919274B1
(en)
1974-05-16
FR2091099A5
(en)
1972-01-14
NL7105904A
(en)
1971-11-03
BE766553A
(en)
1971-09-16
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Legal Events
Date
Code
Title
Description
1973-10-10
PS
Patent sealed
1977-11-30
PLNP
Patent lapsed through nonpayment of renewal fees
