GB579787A - Improvements in or relating to the refining of crude acrylonitrile - Google Patents

Improvements in or relating to the refining of crude acrylonitrile

Info

Publication number
GB579787A
GB579787A GB21823/43A GB2182343A GB579787A GB 579787 A GB579787 A GB 579787A GB 21823/43 A GB21823/43 A GB 21823/43A GB 2182343 A GB2182343 A GB 2182343A GB 579787 A GB579787 A GB 579787A
Authority
GB
United Kingdom
Prior art keywords
acrylonitrile
sulphuric acid
refining
relating
crude acrylonitrile
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
GB21823/43A
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.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid 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 American Cyanamid Co filed Critical American Cyanamid Co
Publication of GB579787A publication Critical patent/GB579787A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C253/00—Preparation of carboxylic acid nitriles
    • C07C253/32—Separation; Purification; Stabilisation; Use of additives
    • C07C253/34—Separation; Purification

Abstract

Acetylene polymers, such as divinylacetylene and ethinyl butadiene, are removed from crude acrylonitrile by treatment with strong sulphuric acid, neutralising any excess of sulphuric acid and separating the purified acrylonitrile. In the examples, crude acrylonitrile is treated with 100 per cent sulphuric acid at temperatures up to 45 DEG C., the mixture is neutralised with ammonia gas or ammonium hydroxide solution, the impurities are removed by filtration or decantation and the acrylonitrile is further purified by distillation.
GB21823/43A 1942-12-01 1943-12-29 Improvements in or relating to the refining of crude acrylonitrile Expired GB579787A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US579787XA 1942-12-01 1942-12-01

Publications (1)

Publication Number Publication Date
GB579787A true GB579787A (en) 1946-08-15

Family

ID=22013876

Family Applications (1)

Application Number Title Priority Date Filing Date
GB21823/43A Expired GB579787A (en) 1942-12-01 1943-12-29 Improvements in or relating to the refining of crude acrylonitrile

Country Status (1)

Country Link
GB (1) GB579787A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738030A (en) * 1951-10-05 1956-03-13 Basf Ag Separation of flowing gas mixtures
DE1003207B (en) * 1953-03-25 1957-02-28 Derives De I Acetylene Soc Ind Process for the purification of acrylonitrile containing low polymer acetylene compounds
US2784149A (en) * 1953-06-25 1957-03-05 Purification of vinyl acetate
DE1013280B (en) * 1954-05-19 1957-08-08 Derives De L Acetylene Soc Ind Process for the purification of crude acrylonitrile from the diene compounds which interfere with the polymerization

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2738030A (en) * 1951-10-05 1956-03-13 Basf Ag Separation of flowing gas mixtures
DE1003207B (en) * 1953-03-25 1957-02-28 Derives De I Acetylene Soc Ind Process for the purification of acrylonitrile containing low polymer acetylene compounds
US2784149A (en) * 1953-06-25 1957-03-05 Purification of vinyl acetate
DE1013280B (en) * 1954-05-19 1957-08-08 Derives De L Acetylene Soc Ind Process for the purification of crude acrylonitrile from the diene compounds which interfere with the polymerization

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