Patent GB-605861-A (GB)
Title: Improvements in or relating to the production of complex metal ammine salts
IPC: C01G1/00
Filed: 1943-12-13
Abstract: A primary non-complex salt of an ammine-forming metal, and a secondary metal salt having an anion capable of forming an insoluble salt with the first metal, are mixed and agitated together in the solid state in the presence of a non-aqueous source of ammine to produce compositions comprising a complex cation metal ammine salt. The ammine source may be ammonia gas; an ammonium compound, e.g. ammonium carbonate, carbamate or bicarbonate; amine compounds, e.g. methylamine or guanidine carbonate, guanidine acetate, ethylene diamine thiocyanate; or urea.  The compounds are preferably relatively unstable.  The primary metal is preferably copper, silver or cobalt, but may be zinc, cadmium, mercury, nickel, chromium, gold, platinum or a mixture.  The secondary salt is preferably sodium fluoride or arsenate or ammonium phosphate, preferably neutral, but may be a mixture.  Both salts are preferably soluble.  The mixture may be heated preferably to 70-80 DEG  C. and suction may be applied to remove evolved gases, e.g. carbon dioxide.  Examples are given of the formation of copper ammonium sulphate, fluoride and phosphate, silver ammonium arsenate, zinc ammonium phosphate and copper urea phosphate.  The product is usually soluble in water or dilute ammonia solution and may be applied to a fabric.  An insoluble metal salt is deposited on decomposition of the ammine which may have desirable preservative properties.ALSO:A primary non-complex salt of an amine-forming metal, and a secondary metal salt having an anion capable of forming an insoluble salt with the first metal, are mixed and agitated together in the solid state in the presence of a non-aqueous source of amine to produce compositions comprising a complex cation metal amine salt.  The product is usually soluble in water or dilute ammonia solution and may be applied to a fabric.  An insoluble metal salt is deposited on decomposition of the amine which may have desirable preservative properties.  The amine source may be ammonia gas, an ammonium compound, e.g. ammonium carbonate, carbamate or bicarbonate; amine compounds, e.g. methylamine or guanidine carbonate, guanidine acetate, ethylene diamine thiocyanate; or urea. The compounds are preferably relatively unstable.  The primary metal is preferably copper, silver or cobalt, but may be zinc, cadmium, mercury, nickel, chromium, gold, platinum or a mixture.  The secondary salt is preferably sodium fluoride or arsenate or ammonium phosphate, preferably neutral, but may be a mixture.  Both salts are preferably soluble.  The mixture may be heated preferably to 70-80 DEG  C. and suction may be applied to remove evolved gases, e.g. carbon dioxide.  Examples are given of the formation of copper ammonium sulphate, fluoride and phosphate, silver ammonium arsenate, zinc ammonium phosphate and copper urea phosphate.ALSO:A primary non-complex salt of an ammine-forming metal, and a secondary metal salt having an anion capable of forming an insoluble salt with the first metal, are mixed and agitated together in the solid state in the presence of a non-aqueous source of ammine to produce compositions comprising a complex cation metal ammine salt.  The product is usually soluble in water or dilute ammonia solution and may be applied to a fabric.  An insoluble metal salt is deposited on decomposition of the ammine which may have desirable preservative properties.  The ammine source may be ammonia gas, an ammonium compound, e.g. ammonium carbonate, carbamate or bicarbonate; amine compounds, e.g. methylamine or guanidine carbonate, guanidine acetate, ethylene diamine thiocyanate; or urea.  The compounds are preferably relatively unstable.  The primary metal is preferably copper, silver or cobalt but may be zinc, cadmium, mercury, nickel, chromium, gold, platinum or a mixture.  The secondary salt is preferably sodium fluoride or arsenate, zinc ammonium phosphate, preferably neutral, but may be a mixture.  Both salts are preferably soluble.  The mixture may be heated preferably to 70-80 DEG  C. and suction may be applied to remove evolved gases, e.g. carbon dioxide. Examples are given of the formation of copper ammonium sulphate, fluoride and phosphate, silver ammonium arsenate, zinc ammonium phosphate and copper urea phosphate.