GB745159A - Process for the production of terephthalic acid and phthalic acid - Google Patents

Process for the production of terephthalic acid and phthalic acid

Info

Publication number
GB745159A
GB745159A GB11640/53A GB1164053A GB745159A GB 745159 A GB745159 A GB 745159A GB 11640/53 A GB11640/53 A GB 11640/53A GB 1164053 A GB1164053 A GB 1164053A GB 745159 A GB745159 A GB 745159A
Authority
GB
United Kingdom
Prior art keywords
xylene
octenes
phthalic
oxidation
mixture
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
GB11640/53A
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Publication of GB745159A publication Critical patent/GB745159A/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
    • C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
    • C07C63/04—Monocyclic monocarboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
    • C07C63/14—Monocyclic dicarboxylic acids
    • C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
    • C07C63/16—1,2 - Benzenedicarboxylic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C63/00—Compounds having carboxyl groups bound to a carbon atoms of six-membered aromatic rings
    • C07C63/14—Monocyclic dicarboxylic acids
    • C07C63/15—Monocyclic dicarboxylic acids all carboxyl groups bound to carbon atoms of the six-membered aromatic ring
    • C07C63/26—1,4 - Benzenedicarboxylic acid

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

Phthalic and terephthalic acids are produced by converting straight-chain olefins having 2, 4 or 6 carbon atoms in the molecule or a mixture of branched pentene, CH3.CH(CH3).CH=CH2, and propene into octenes by the process of Specifications 713,081 and 742,642, aromatizing these octenes to yield mixtures containing o-xylene and p-xylene and substantially free from m-xylene, and oxidizing the o- or p-xylene. The octenes which are formed have the carbon structures <FORM:0745159/IV(a)/1> , <FORM:0745159/IV(a)/2> or <FORM:0745159/IV(a)/3> and include, for example, 2-ethylhexene-1, 2 - methyl - 5 - dimethylpentene - 1, 2 - isopropylpentene-1 and n-octene. Aromatization may be effected in the presence of a chromium-containing catalyst, e.g. chromic oxide. The major proportion of p-xylene is separated by deep cooling, preferably after the addition of methanol, the p-xylene crystallizing out. The liquid residue is separated by distillation into p-xylene or a mixture thereof with ethyl benzene, and o-xylene. Terephthalic acid may be obtained by oxidation of the p-xylene with potassium permanganate or with air in the presence of cobalt naphthenate. Phthalic acid anhydride may be obtained from o-xylene by oxidation with air using tin vanadate as catalyst. Specification 623,836 also is referred to.
GB11640/53A 1952-04-25 1953-04-27 Process for the production of terephthalic acid and phthalic acid Expired GB745159A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE745159X 1952-04-25

Publications (1)

Publication Number Publication Date
GB745159A true GB745159A (en) 1956-02-22

Family

ID=6648195

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11640/53A Expired GB745159A (en) 1952-04-25 1953-04-27 Process for the production of terephthalic acid and phthalic acid

Country Status (1)

Country Link
GB (1) GB745159A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9388110B2 (en) 2013-12-12 2016-07-12 Saudi Arabian Oil Company Liquid phase oxidation of aromatic feedstocks with manganate recycling to produce carboxylic acids

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9388110B2 (en) 2013-12-12 2016-07-12 Saudi Arabian Oil Company Liquid phase oxidation of aromatic feedstocks with manganate recycling to produce carboxylic acids
US9902677B2 (en) 2013-12-12 2018-02-27 Saudi Arabian Oil Company Liquid phase oxidation of aromatic feedstocks with manganate recycling to produce carboxylic acids

Similar Documents

Publication Publication Date Title
Fieser et al. Alkylation of Para Quinones with Acyl Peroxides
GB655074A (en) An improved process for the preparation of terephthalic acid
US2452741A (en) Production of dibasic acids
US3248417A (en) Production of dimethyl terephthalate and dimethyl isophthalate from an evaporation residue rich in dimethyl isophthalate
US2441183A (en) Hexahydrobenzyl ester
US3356740A (en) Preparation of hydroxyalkyladamantanes
GB745159A (en) Process for the production of terephthalic acid and phthalic acid
US2414999A (en) Esterification process
US3301887A (en) Production of cyclic unsaturated alcohols and borate esters
US3639437A (en) Production of carboxylic esters of beth-formylcrotyl alcohol
US2762838A (en) Manufacture of monohydroxy aromatic compounds from aromatic carboxylic acids
GB832995A (en) Improvements in and relating to a process for the oxidation of organic compounds
US3481975A (en) Method of preparing dicarboxylic acids
US2821551A (en) Process for production of aromatic carboxylic acids
ES483367A1 (en) Process for the preparation of glycidyl esters of aromatic polycarboxylic acids.
US3403175A (en) Preparation of glycol diesters from olefins and carboxylic acid anhydrides
US2764611A (en) Process for production of aromatic polycarboxylic acids
US3253017A (en) Process for the production of esters of phthalic acids
EP0178524A1 (en) Process for the preparation of possibly substituted cinnamic acid in the presence of a catalyst
US2851489A (en) Aminohydroxyimino aliphatic carboxylic acids and the preparation thereof
US3696141A (en) Process for the production of methyl benzoate
US3860654A (en) Production of 6,10-dimethylundecatriene-(3,5,10)-one-(2)
US2782222A (en) Production of terephthalic acid or esters thereof
GB595170A (en) Production of crotonic acid
SU522171A1 (en) Method for producing carboxylic acids