The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 15, 1978
Filed:
Nov. 01, 1976
Rowland Kennington, Runcorn, GB;
Robin Andrew Woolhouse, Runcorn, GB;
Imperial Chemical Industries Limited, London, GB;
Abstract
A process for the preparation of a fire-extinguishing composition comprising a compound having an empirical formula MC.sub.2 N.sub.2 H.sub.3 O.sub.3, where M is potassium or sodium, by reacting a mixture of urea and an alkali selected from hydroxides and carbonic salts of potassium or sodium, the process comprising adding solid particulate urea, or urea and alkali in solid particulate form, to an agitated bed of solid particulate material, the bed of particulate material being heated to a temperature in the range 95.degree. to 200.degree. C and comprising at least alkali in the case where urea alone is added, and the rate of addition of the urea, or of the urea and alkali, being controlled to maintain the bed in a solid particulate form.