GB830114A - Process of preparing biuret from urea - Google Patents

Process of preparing biuret from urea

Info

Publication number
GB830114A
GB830114A GB19407/58A GB1940758A GB830114A GB 830114 A GB830114 A GB 830114A GB 19407/58 A GB19407/58 A GB 19407/58A GB 1940758 A GB1940758 A GB 1940758A GB 830114 A GB830114 A GB 830114A
Authority
GB
United Kingdom
Prior art keywords
urea
melt
biuret
water vapour
preparing
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
GB19407/58A
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.)
Stamicarbon BV
Original Assignee
Stamicarbon BV
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 Stamicarbon BV filed Critical Stamicarbon BV
Publication of GB830114A publication Critical patent/GB830114A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C273/00—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups
    • C07C273/18—Preparation of urea or its derivatives, i.e. compounds containing any of the groups, the nitrogen atoms not being part of nitro or nitroso groups of substituted ureas
    • C07C273/1872—Preparation of compounds comprising a -N-C(O)-N-C(O)-N- moiety
    • C07C273/1881—Preparation of compounds comprising a -N-C(O)-N-C(O)-N- moiety from urea

Landscapes

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

Abstract

In a process of preparing biuret by heating urea, the biuret formation is accelerated by causing water vapour to pass through the urea melt while it is being heated. Reaction conditions are preferably 110 DEG to 160 DEG C. at 30 to 760 mm. of Hg. The water vapour current through the melt may be maintained with steam or superheated steam, by continuous addition of water or urea solution (e.g. as obtained in conventional urea synthesis) or by refluxing an aqueous urea melt. The aqueous content of the urea melt is preferably maintained at 1 to 15% by weight, a portion of the melt being continuously withdrawn and recycled after removal of biuret. U.S.A. Specifications 2,145,392, 2,370,065 and 2,524,049 are referred to.
GB19407/58A 1957-06-18 1958-06-17 Process of preparing biuret from urea Expired GB830114A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL830114X 1957-06-18

Publications (1)

Publication Number Publication Date
GB830114A true GB830114A (en) 1960-03-09

Family

ID=19841634

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19407/58A Expired GB830114A (en) 1957-06-18 1958-06-17 Process of preparing biuret from urea

Country Status (1)

Country Link
GB (1) GB830114A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516052B1 (en) * 1970-10-21 1976-02-25
US4540820A (en) * 1981-05-20 1985-09-10 Moorman Manufacturing Company Production of animal feed grade biuret
US4654441A (en) * 1980-08-15 1987-03-31 Moorman Manufacturing Company Biuret production by controlled pyrolysis of urea

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516052B1 (en) * 1970-10-21 1976-02-25
US4654441A (en) * 1980-08-15 1987-03-31 Moorman Manufacturing Company Biuret production by controlled pyrolysis of urea
US4540820A (en) * 1981-05-20 1985-09-10 Moorman Manufacturing Company Production of animal feed grade biuret

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