GB339220A - Improvements in or relating to the preparation of cyanates - Google Patents

Improvements in or relating to the preparation of cyanates

Info

Publication number
GB339220A
GB339220A GB8878/30A GB887830A GB339220A GB 339220 A GB339220 A GB 339220A GB 8878/30 A GB8878/30 A GB 8878/30A GB 887830 A GB887830 A GB 887830A GB 339220 A GB339220 A GB 339220A
Authority
GB
United Kingdom
Prior art keywords
alkali
cyanates
alkaline
earth metal
compounds
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
GB8878/30A
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.)
Evonik Operations GmbH
Original Assignee
Degussa GmbH
Deutsche Gold und Silber Scheideanstalt
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 Degussa GmbH, Deutsche Gold und Silber Scheideanstalt filed Critical Degussa GmbH
Publication of GB339220A publication Critical patent/GB339220A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C01—INORGANIC CHEMISTRY
    • C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
    • C01C3/00—Cyanogen; Compounds thereof
    • C01C3/20—Thiocyanic acid; Salts thereof

Landscapes

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

Abstract

339,220. Deutsche Gold-und Silber- Scheideanstalt vorm. Roessler. April 10, 1929, [Convention date]. Alkali and alkaline-earth metal cyanates; ammonia.-Alkali and alkaline-earth metal cyanates are obtained by heating urea in the absence of solvents, say to 120-150‹ C., with basic alkali metal compounds such as soda or potash or alkali hydrides (but excluding alkali hydroxides) or with alkaline-earth metal compounds, for instance with calcium oxide or hydroxide, calcium carbide, hydride, amide, or carbonate. Ammonia evolved is recovered, and when calcium carbide is used, acetylene also is obtained. In carrying out the process less than the equivalent quantity of urea may be used at first, and then a further quantity be added to provide a slight excess. Alkalineearth cyanates obtained may be treated in aqueous solution or suspension with alkali compounds such as common salt to produce alkali cyanates.
GB8878/30A 1929-04-10 1930-03-19 Improvements in or relating to the preparation of cyanates Expired GB339220A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE339220X 1929-04-10

Publications (1)

Publication Number Publication Date
GB339220A true GB339220A (en) 1930-12-04

Family

ID=6223417

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8878/30A Expired GB339220A (en) 1929-04-10 1930-03-19 Improvements in or relating to the preparation of cyanates

Country Status (1)

Country Link
GB (1) GB339220A (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2665968A (en) * 1950-07-15 1954-01-12 Fond Emanuele Paterno Process for the preparation of cyanates of alkalimetals from urea and alkaline nitrites
US2690957A (en) * 1950-11-21 1954-10-05 Olin Mathieson Process for making alkali metal cyanates or alkali metal thiocyanates
US2690956A (en) * 1950-11-21 1954-10-05 Olin Mathieson Process of making sodium cyanate
US2699418A (en) * 1950-12-01 1955-01-11 Olin Mathieson Process of applying lithium cyanate to mites
US2801154A (en) * 1953-12-31 1957-07-30 Ethyl Corp Preparation of metal cyanates
US3197275A (en) * 1962-05-09 1965-07-27 Sakae Food Stuff Lndustry Co L Process for the production of alkali metal cyanates
US3303063A (en) * 1964-06-15 1967-02-07 Gen Motors Corp Liquid nitriding process using urea
US4496529A (en) * 1984-06-20 1985-01-29 Olin Corporation Preparation of metal cyanates from alkyl carbamates

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2665968A (en) * 1950-07-15 1954-01-12 Fond Emanuele Paterno Process for the preparation of cyanates of alkalimetals from urea and alkaline nitrites
US2690957A (en) * 1950-11-21 1954-10-05 Olin Mathieson Process for making alkali metal cyanates or alkali metal thiocyanates
US2690956A (en) * 1950-11-21 1954-10-05 Olin Mathieson Process of making sodium cyanate
US2699418A (en) * 1950-12-01 1955-01-11 Olin Mathieson Process of applying lithium cyanate to mites
US2801154A (en) * 1953-12-31 1957-07-30 Ethyl Corp Preparation of metal cyanates
US3197275A (en) * 1962-05-09 1965-07-27 Sakae Food Stuff Lndustry Co L Process for the production of alkali metal cyanates
US3303063A (en) * 1964-06-15 1967-02-07 Gen Motors Corp Liquid nitriding process using urea
US4496529A (en) * 1984-06-20 1985-01-29 Olin Corporation Preparation of metal cyanates from alkyl carbamates

Similar Documents

Publication Publication Date Title
GB339220A (en) Improvements in or relating to the preparation of cyanates
GB273735A (en) Method of synthetically producing ammonia from its elements
GB661701A (en) N-acyl-n-aliphatic taurates having surface active properties
GB962812A (en) Process for the production of finely dispersed calcium carbonate
GB283089A (en) A process for the production of alkali hydrides
GB505890A (en) Improvements in the purification of masses containing calcium hydroxide
US1309209A (en) Gubnn h
GB635553A (en) Improvements in or relating to the production of aluminium fluoride from aluminium-ammonium fluoride
US2067013A (en) Process for producing the disodium salt of imidodicarboxylic acid
US1450975A (en) Process for the manufacture of borax and boric acid
GB363848A (en) Process for the removal of ammonia and sulphuretted hydrogen from gases
GB300629A (en) An improved process for the production of potassium carbonate
GB268420A (en) A process for the production of concentrated solutions of alkali cyanides
US1599358A (en) Process for removing the hair from green hides
GB633008A (en) A process for the treatment of complex lithium compounds
Halliday et al. 26. The action of nitrous acid on formaldehyde
GB540062A (en) Process of manufacturing sodium cyanide
US1758641A (en) Process of producing urea
SU118203A1 (en) The method of decomposition of a mixture of ethylene diamine chloride-hydrogen salts, polyamines and ammonia
GB976319A (en) Process for the production of alkali metal salts of nitrilo triacetic acid
GB265639A (en) Improvements in or relating to the manufacture of alkali metal cyanides
GB329032A (en) Improvements in dehydration
GB642946A (en) Improvements in/or relating to a method of removing chlorate substances from alkali metal hydroxides
GB191511486A (en) Process for the Production of Ammonia.
GB284998A (en) Manufacture of 2:3-aminonaphthoic acid