ES403479A1 - Method for producing monomethyl terepthalate - Google Patents

Method for producing monomethyl terepthalate

Info

Publication number
ES403479A1
ES403479A1 ES403479A ES403479A ES403479A1 ES 403479 A1 ES403479 A1 ES 403479A1 ES 403479 A ES403479 A ES 403479A ES 403479 A ES403479 A ES 403479A ES 403479 A1 ES403479 A1 ES 403479A1
Authority
ES
Spain
Prior art keywords
para
atmospheres
oxidized
toluilic
xylene
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
ES403479A
Other languages
Spanish (es)
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.)
Fried Krupp AG
Original Assignee
Fried Krupp AG
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 DE19712127737 external-priority patent/DE2127737C3/en
Application filed by Fried Krupp AG filed Critical Fried Krupp AG
Publication of ES403479A1 publication Critical patent/ES403479A1/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/39—Preparation of carboxylic acid esters by oxidation of groups which are precursors for the acid moiety of the ester

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)
  • Catalysts (AREA)

Abstract

Procedure for the preparation of monomethyl terephthalate from para-xylene, characterized in that the para-xylene is oxidized at temperatures between 90 and 140ºC as well as at pressures between 1 and 15 atmospheres and with a partial pressure of oxygen of less than 3 atmospheres for form para-toluilic acid, para-toluilic acid is esterified to form para-toluilic acid methyl ester, para-toluilic acid methyl ester is then oxidized at temperatures between 130 and 200ºC as well as at pressures between 1 and 6 atmospheres to form monomethyl terephthalate, and this is subjected to a purification, the oxidation processes being interrupted, which in each case are carried out in the presence, as an oxidation catalyst, of a salt of a polyvalent heavy metal soluble in the substance starting point to be oxidized, in each case at the point of maximum selectivity of the reaction that can be achieved for the reaction products desired. (Machine-translation by Google Translate, not legally binding)
ES403479A 1971-06-04 1972-06-03 Method for producing monomethyl terepthalate Expired ES403479A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712127737 DE2127737C3 (en) 1971-06-04 Process for the production of monomethyl terephthalate

Publications (1)

Publication Number Publication Date
ES403479A1 true ES403479A1 (en) 1975-05-01

Family

ID=5809816

Family Applications (1)

Application Number Title Priority Date Filing Date
ES403479A Expired ES403479A1 (en) 1971-06-04 1972-06-03 Method for producing monomethyl terepthalate

Country Status (18)

Country Link
AT (1) AT321286B (en)
AU (1) AU466962B2 (en)
BE (1) BE784311A (en)
BG (1) BG24946A3 (en)
BR (1) BR7203612D0 (en)
CA (1) CA978542A (en)
CS (1) CS172947B2 (en)
DD (1) DD96701A5 (en)
EG (1) EG10582A (en)
ES (1) ES403479A1 (en)
FR (1) FR2140202B1 (en)
GB (1) GB1385561A (en)
IT (1) IT956024B (en)
NL (1) NL7207546A (en)
RO (1) RO65164A (en)
SE (1) SE391331B (en)
SU (1) SU550973A3 (en)
TR (1) TR18815A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102952019B (en) * 2011-08-17 2014-07-09 张炜海 Dioctyl phthalate production line and DOTP production method

Also Published As

Publication number Publication date
AT321286B (en) 1975-03-25
CS172947B2 (en) 1977-01-28
AU4310872A (en) 1973-12-13
DE2127737B2 (en) 1976-06-10
BE784311A (en) 1972-10-02
BG24946A3 (en) 1978-06-15
RO65164A (en) 1980-05-15
GB1385561A (en) 1975-02-26
FR2140202B1 (en) 1978-07-21
DD96701A5 (en) 1973-04-05
BR7203612D0 (en) 1973-06-14
TR18815A (en) 1977-11-01
EG10582A (en) 1976-06-30
CA978542A (en) 1975-11-25
SE391331B (en) 1977-02-14
SU550973A3 (en) 1977-03-15
FR2140202A1 (en) 1973-01-12
IT956024B (en) 1973-10-10
DE2127737A1 (en) 1972-12-14
NL7207546A (en) 1972-12-06
AU466962B2 (en) 1973-12-13

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