GB566328A - Improvements in or relating to the purification of acetaldol by distillation - Google Patents

Improvements in or relating to the purification of acetaldol by distillation

Info

Publication number
GB566328A
GB566328A GB3042/43A GB304243A GB566328A GB 566328 A GB566328 A GB 566328A GB 3042/43 A GB3042/43 A GB 3042/43A GB 304243 A GB304243 A GB 304243A GB 566328 A GB566328 A GB 566328A
Authority
GB
United Kingdom
Prior art keywords
acetaldol
column
acetaldehyde
vapours
temperature
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
GB3042/43A
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.)
Distillers Co Yeast Ltd
Distillers Co Ltd
Original Assignee
Distillers Co Yeast Ltd
Distillers Co 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.)
Filing date
Publication date
Application filed by Distillers Co Yeast Ltd, Distillers Co Ltd filed Critical Distillers Co Yeast Ltd
Priority to GB3042/43A priority Critical patent/GB566328A/en
Priority to US525232A priority patent/US2368904A/en
Publication of GB566328A publication Critical patent/GB566328A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/783—Separation; Purification; Stabilisation; Use of additives by gas-liquid treatment, e.g. by gas-liquid absorption
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/78—Separation; Purification; Stabilisation; Use of additives
    • C07C45/81—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C45/82—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation by distillation

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

566,328. Distilling acetaldol. DISTILLERS CO., Ltd., TUERCK, K. H. W., and LICHTENSTEIN, H. J. Feb. 24, 1943, No. 3042. [Class 32] Pure acetaldol is obtained from mixtures containing it, e.g. crude acetaldol obtained by the condensation of acetaldehyde with alkali which contains free acetaldehyde and polymerized products, by leading the mixture into a fractionating column in counter-current to the vapours of a normally liquid hydrocarbon which is immiscible with acetaldol and has a boiling point between 170‹ and 300‹ C., maintaining the pressure in the column such that the temperature at the top thereof is not more than 90‹ C., condensing the distillate and separating the acetaldol layer from the hydrocarbon layer. Acetaldol containing 20 per cent acetaldehyde was introduced at the top of a column through which vapours of dodecane were passed upwardly. The temperature at the top of the column was maintained at 75‹ C. and the pressure was about 25 mm. of mercury.
GB3042/43A 1943-02-24 1943-02-24 Improvements in or relating to the purification of acetaldol by distillation Expired GB566328A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB3042/43A GB566328A (en) 1943-02-24 1943-02-24 Improvements in or relating to the purification of acetaldol by distillation
US525232A US2368904A (en) 1943-02-24 1944-03-06 Purification of acetaldol by distillation

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3042/43A GB566328A (en) 1943-02-24 1943-02-24 Improvements in or relating to the purification of acetaldol by distillation

Publications (1)

Publication Number Publication Date
GB566328A true GB566328A (en) 1944-12-22

Family

ID=9750846

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3042/43A Expired GB566328A (en) 1943-02-24 1943-02-24 Improvements in or relating to the purification of acetaldol by distillation

Country Status (2)

Country Link
US (1) US2368904A (en)
GB (1) GB566328A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2452797A (en) * 1944-05-29 1948-11-02 Us Ind Chemicals Inc Stripping of acetaldehyde from aldol by hydrocarbon vapors
NL130614C (en) * 1958-11-27

Also Published As

Publication number Publication date
US2368904A (en) 1945-02-06

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