GB997324A - Improvements in or relating to the production of acrylic acid - Google Patents

Improvements in or relating to the production of acrylic acid

Info

Publication number
GB997324A
GB997324A GB24511/63A GB2451163A GB997324A GB 997324 A GB997324 A GB 997324A GB 24511/63 A GB24511/63 A GB 24511/63A GB 2451163 A GB2451163 A GB 2451163A GB 997324 A GB997324 A GB 997324A
Authority
GB
United Kingdom
Prior art keywords
acrylic acid
base product
mercury
less
fractional distillation
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
GB24511/63A
Inventor
Christopher John Brown
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 GB24511/63A priority Critical patent/GB997324A/en
Priority to FR978863A priority patent/FR86090E/en
Publication of GB997324A publication Critical patent/GB997324A/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
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
    • C07C51/44—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation
    • C07C51/46—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation by distillation by azeotropic distillation
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
    • C07C51/42—Separation; Purification; Stabilisation; Use of additives
    • C07C51/48—Separation; Purification; Stabilisation; Use of additives by liquid-liquid treatment
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C57/00—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms
    • C07C57/02—Unsaturated compounds having carboxyl groups bound to acyclic carbon atoms with only carbon-to-carbon double bonds as unsaturation
    • C07C57/03—Monocarboxylic acids
    • C07C57/04—Acrylic acid; Methacrylic acid
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/48—Separation; Purification; Stabilisation; Use of additives
    • C07C67/52—Separation; Purification; Stabilisation; Use of additives by change in the physical state, e.g. crystallisation
    • C07C67/54—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)
  • Engineering & Computer Science (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Acrylic acid, extracted from an aqueous mixture of acrylic and acetic acids by extraction with ethyl acrylate or acetate and subsequently recovered as base product by fractional distillation of the organic phase as in the parent Specification, is purified by subjecting the base product to a second fractional distillation at a base temperature of less than 90 DEG C., preferably from 50 DEG to 90 DEG C., and a pressure of not less than 50 mm. of mercury and recovering the pure acrylic acid substantially free from acetic as a base product. It is preferred to use a column of 30 theoretical plates and operate with a head pressure of 20 to 100 mm. of mercury. The example describes the use of a packed laboratory column operated as a continuous unit.
GB24511/63A 1963-06-20 1963-06-20 Improvements in or relating to the production of acrylic acid Expired GB997324A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB24511/63A GB997324A (en) 1963-06-20 1963-06-20 Improvements in or relating to the production of acrylic acid
FR978863A FR86090E (en) 1963-06-20 1964-06-19 Method for concentrating aqueous solutions of acrylic acid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB24511/63A GB997324A (en) 1963-06-20 1963-06-20 Improvements in or relating to the production of acrylic acid

Publications (1)

Publication Number Publication Date
GB997324A true GB997324A (en) 1965-07-07

Family

ID=10212805

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24511/63A Expired GB997324A (en) 1963-06-20 1963-06-20 Improvements in or relating to the production of acrylic acid

Country Status (1)

Country Link
GB (1) GB997324A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3689541A (en) * 1970-02-05 1972-09-05 Kurt Sennewald Process for isolating acrylic acid from aqueous crude acrylic acid by extraction with a ketone and plural stage distillation
US3692829A (en) * 1969-12-27 1972-09-19 Knapsack Ag Process for isolating acrylic acid from aqueous crude acrylic acid by extraction with a ketone and plural stage distillation

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3692829A (en) * 1969-12-27 1972-09-19 Knapsack Ag Process for isolating acrylic acid from aqueous crude acrylic acid by extraction with a ketone and plural stage distillation
US3689541A (en) * 1970-02-05 1972-09-05 Kurt Sennewald Process for isolating acrylic acid from aqueous crude acrylic acid by extraction with a ketone and plural stage distillation

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