GB982751A - Separation of dibasic acids - Google Patents

Separation of dibasic acids

Info

Publication number
GB982751A
GB982751A GB4270363A GB4270363A GB982751A GB 982751 A GB982751 A GB 982751A GB 4270363 A GB4270363 A GB 4270363A GB 4270363 A GB4270363 A GB 4270363A GB 982751 A GB982751 A GB 982751A
Authority
GB
United Kingdom
Prior art keywords
aqueous
succinic
water
phase
acid
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
GB4270363A
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.)
Monsanto Co
Original Assignee
Monsanto 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.)
Filing date
Publication date
Application filed by Monsanto Co filed Critical Monsanto Co
Publication of GB982751A publication Critical patent/GB982751A/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42Separation; Purification; Stabilisation; Use of additives
    • C07C51/48Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment

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

Aqueous mixtures of succinic, glutaric and adipic acids are separated by contacting the mixture with water-immiscible solvent to give a water to solvent ratio of 0.05 to 2.0, separating into two phases, and recovering adipic acid from the immiscible solvent phase and succinic and glutaric acid from the aqueous phase. The aqueous mixture is particularly, the residue after the crystallization of adipic acid from the oxidation product of cycloparaffins in a two-stage process. The solvents may be aliphatic alcohols with 4-15 carbon atoms and the esters thereof. The immiscible solvent phase is again washed and adipic acid fractionally crystallized from the aqueous stage while the mother liquor is returned to the original aqueous mixture. The succinic and glutaric acids may be recovered in combination from the original aqueous phase, or obtained individually by contacting with a water-immiscible solvent and recovering succinic acid from the resulting aqueous phase and glutaric acid from the solvent phase, preferably by a further extraction with water.
GB4270363A 1962-11-07 1963-10-29 Separation of dibasic acids Expired GB982751A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23594562A 1962-11-07 1962-11-07

Publications (1)

Publication Number Publication Date
GB982751A true GB982751A (en) 1965-02-10

Family

ID=22887494

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4270363A Expired GB982751A (en) 1962-11-07 1963-10-29 Separation of dibasic acids

Country Status (8)

Country Link
BE (1) BE639662A (en)
CH (1) CH429691A (en)
DE (1) DE1468291A1 (en)
GB (1) GB982751A (en)
LU (1) LU44755A1 (en)
NL (1) NL300228A (en)
NO (1) NO119081B (en)
SE (1) SE312333B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112441915A (en) * 2019-09-04 2021-03-05 中国石油化工股份有限公司 Method for treating crystallization mother liquor in adipic acid crystallization refining process

Also Published As

Publication number Publication date
DE1468291A1 (en) 1969-05-29
NL300228A (en)
SE312333B (en) 1969-07-14
CH429691A (en) 1967-02-15
NO119081B (en) 1970-03-23
LU44755A1 (en) 1964-05-05
BE639662A (en)

Similar Documents

Publication Publication Date Title
US2840607A (en) Separation of dibasic acids
GB901879A (en) Process for recovering adipic acid from the reaction products of the air-oxidation of cyclohexane
GB1282927A (en) Improvements in or relating to the oxidation of cyclohexane
GB1004243A (en) Recovery of dicarboxylic acids from mixtures thereof
GB1204184A (en) Manufacture of trimetallitic anhydride
GB982751A (en) Separation of dibasic acids
GB1282926A (en) Esterification and extraction process
GB1109543A (en) A method of processing the reaction mixture from the oxidation of cyclohexane
GB1325978A (en) Butadiene recovery process
ES280733A1 (en) Procedure for the preparation of purified sacarose esters (Machine-translation by Google Translate, not legally binding)
GB1023145A (en) Improvements in or relating to the preparation of vitamin d
JPS5657732A (en) Method of recovering carboxylic acid from mixture containing glycol ester derived from carboxylic acid
GB978877A (en) Improvements in or relating to a separation of carbamic acid esters
GB928783A (en) Purification of solutions obtained in the production of hydrogen peroxide
US3320230A (en) Process for separating carboxylic acids
ES377303A1 (en) Crystallization of a fatty component from a feed by the steps of emulsification with a surfactant, cooling by vacuum evaporation and subsequent conventional separation
US3059025A (en) Separation of high purity isophthalic acid
GB797797A (en) Process for recovering pure isophthalic and terephthalic acid
GB1223028A (en) Preparation of carboxylic acids and/or esters
GB958064A (en) Method of purifying sugar esters
GB954256A (en) Process for the separation of mixtures of isomers of tri-methyl adipic acid
GB1318453A (en) Process for producing wool wax alcohols and fatty acids
US3429902A (en) Process for purifying stearic acid
GB649286A (en) Manufacture of phenol
GB1071769A (en) Process for the production of adipic acid