GB731686A - Improvements in and relating to urea compositions - Google Patents

Improvements in and relating to urea compositions

Info

Publication number
GB731686A
GB731686A GB1596152A GB1596152A GB731686A GB 731686 A GB731686 A GB 731686A GB 1596152 A GB1596152 A GB 1596152A GB 1596152 A GB1596152 A GB 1596152A GB 731686 A GB731686 A GB 731686A
Authority
GB
United Kingdom
Prior art keywords
urea
per cent
weight
relating
less
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
GB1596152A
Inventor
Derek Jan Dijksman
Ian Alexander Mcarthur
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries 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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1596152A priority Critical patent/GB731686A/en
Publication of GB731686A publication Critical patent/GB731686A/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
    • C07C273/02—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 urea, its salts, complexes or addition compounds
    • C07C273/14—Separation; Purification; Stabilisation; Use of additives
    • C—CHEMISTRY; METALLURGY
    • C05—FERTILISERS; MANUFACTURE THEREOF
    • C05C—NITROGENOUS FERTILISERS
    • C05C9/00—Fertilisers containing urea or urea compounds
    • C05C9/005—Post-treatment

Landscapes

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

Abstract

A free-flowing and substantially non-caking urea composition comprises an intimate mixture of substantially crystalline urea and from 1/2 per cent to 2 per cent by weight of basic magnesium carbonate. "Substantially crystalline" urea is commercial urea of which not less than 90 per cent by weight will pass British Standard sieve No. 30. Preferably the urea should be dried to a moisture content of less than 1 per cent before the basic magnesium carbonate is mixed with it. The urea used may be produced by synthesis from ammonia and carbon dioxide.
GB1596152A 1952-06-25 1952-06-25 Improvements in and relating to urea compositions Expired GB731686A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1596152A GB731686A (en) 1952-06-25 1952-06-25 Improvements in and relating to urea compositions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1596152A GB731686A (en) 1952-06-25 1952-06-25 Improvements in and relating to urea compositions

Publications (1)

Publication Number Publication Date
GB731686A true GB731686A (en) 1955-06-15

Family

ID=10068699

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1596152A Expired GB731686A (en) 1952-06-25 1952-06-25 Improvements in and relating to urea compositions

Country Status (1)

Country Link
GB (1) GB731686A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3118454A1 (en) * 1980-05-20 1982-02-18 Compagnie Néerlandaise de l'Azote S.A., Bruxelles "METHOD FOR PRODUCING UREA GRAIN"

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3118454A1 (en) * 1980-05-20 1982-02-18 Compagnie Néerlandaise de l'Azote S.A., Bruxelles "METHOD FOR PRODUCING UREA GRAIN"

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