GB606096A - A process for the manufacture of methacrylamide - Google Patents

A process for the manufacture of methacrylamide

Info

Publication number
GB606096A
GB606096A GB3370/41A GB337041A GB606096A GB 606096 A GB606096 A GB 606096A GB 3370/41 A GB3370/41 A GB 3370/41A GB 337041 A GB337041 A GB 337041A GB 606096 A GB606096 A GB 606096A
Authority
GB
United Kingdom
Prior art keywords
methacrylamide
reaction
manufacture
solution
continuously
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
GB3370/41A
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.)
Lonza AG
Original Assignee
Lonza AG
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 Lonza AG filed Critical Lonza AG
Publication of GB606096A publication Critical patent/GB606096A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C233/00—Carboxylic acid amides
    • C07C233/01—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms
    • C07C233/02—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals
    • C07C233/09—Carboxylic acid amides having carbon atoms of carboxamide groups bound to hydrogen atoms or to acyclic carbon atoms having nitrogen atoms of carboxamide groups bound to hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals with carbon atoms of carboxamide groups bound to carbon atoms of an acyclic unsaturated carbon skeleton

Landscapes

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

Abstract

In the manufacture of methacrylamide by the action of sulphuric acid on acetone cyanhydrin, the reaction is effected at 110-130 DEG C., preferably at 110-120 DEG C., in presence of methacrylamide and is completed at a higher temperature of 115-160 DEG C., preferably at about 140 DEG C. The process is suitably performed continuously by passing the components continuously into a cooled mixing chamber containing a solution of methacrylamide. After the reaction is complete, the reaction solution is neutralized with ammonia when the methacrylamide separates out in the hot in an upper layer and a further amount is subsequently isolated from the lower layer. An example is is given.
GB3370/41A 1940-03-21 1941-03-12 A process for the manufacture of methacrylamide Expired GB606096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH606096X 1940-03-21

Publications (1)

Publication Number Publication Date
GB606096A true GB606096A (en) 1948-08-06

Family

ID=4523090

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3370/41A Expired GB606096A (en) 1940-03-21 1941-03-12 A process for the manufacture of methacrylamide

Country Status (1)

Country Link
GB (1) GB606096A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753375A (en) * 1954-03-16 1956-07-03 American Cyanamid Co Method of preparing acrylamide
JPS5271411A (en) * 1975-12-09 1977-06-14 Mitsui Toatsu Chem Inc Continuous preparation of methacrylic amide sulfate

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753375A (en) * 1954-03-16 1956-07-03 American Cyanamid Co Method of preparing acrylamide
JPS5271411A (en) * 1975-12-09 1977-06-14 Mitsui Toatsu Chem Inc Continuous preparation of methacrylic amide sulfate
JPS537411B2 (en) * 1975-12-09 1978-03-17

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