Patent GB-420589-A (GB)
Title: Manufacture of metal salts of polymeric carboxylic acids and the production of shaped articles therefrom
IPC: D01F6/16
Filed: 1933-06-01
Abstract: In a modification of the process of the parent Specification, the simple polymeric carboxylic acid or alkali salt thereof employed in the production of the metal salts is replaced by a polymeric carboxylic acid resulting from the polymerization of a mixture of a polymerizable carboxylic acid and another non-resinous substance capable of polymerizing, or an alkali salt thereof.  Suitable polymeric carboxylic acids are obtained by polymerization of a mixture of maleic acid and styrol, or of maleic acid and vinyl-n-butyl ether, or of fumaric acid or methylene malonic acid and styrol, or of acrylic acid and another non-resinous substance.  For the polymerization, the acid may be replaced by its anhydride or an ester.  Examples relate to the production of the aluminium salt of the acid resulting from the polymerization of maleic acid and vinyl methyl ether in equimolecular proportions, the zinc salt of an equimolecular maleic acid anhydride-styrol polymerizate, the cadmium salt of methylenemalonic acid ethyl ester-styrol polymerizate, the cobalt salt of the polymerization product of 2 mols. nitrile of acrylic acid and 3 mols. acrylic acid, and the copper salt of maleic acid anhydride-styrol polymerizate.  The last product is mixed with triethanolamine and concentrated aqueous ammonia to form a paste which is dried and pulverized.  The powder is pressed into plates at 60--100 DEG  C. under a pressure of several atmospheres.  As in the parent Specification, the products are soluble in weakly alkaline solutions, and films or threads may be obtained therefrom.  Also porous masses of metal oxide may be obtained by heating the products to a feeble red heat with access of air.  Specification 376,481 is referred to.ALSO:In a modification of the process of the parent Specification, the simple polymeric carboxylic acid or alkali salt thereof employed in the production of the metal salts is replaced by a polymeric carboxylic acid resulting from the polymerization of a mixture of a polymerizable carboxylic acid and another non-resinous substance capable of polymerizing, or an alkali salt thereof. Suitable polymeric carboxylic acids are obtained by polymerization of a mixture of maleic acid and styrol, or of maleic acid and vinyl-n-butyl ether, or of fumaric acid or methylene malonic acid and styrol, or of acrylic acid and another non-resinous substance.  For the polymerization, the acid may be replaced by its anhydride or an ester.  Examples relate to the production of the aluminium salt of the acid resulting from the polymerization of maleic acid and vinyl methyl ether in equimolecular proportions, the zinc salt of an equimolecular maleic acid anhydride-styrol polymerizate, the cadmium salt of methylenemalonic acid ethyl ester-styrol polymerizate, the cobalt salt of the polymerization product of 2 mols. nitrile of acrylic acid and 3 mols. acrylic acid, and the copper salt of maleic acid anhydridestyrol polymerizate.  The last product is mixed with triethanolamine and concentrated aqueous ammonia to form a paste which is dried and pulverized.  The powder is pressed into plates at 60--100 DEG  C. under a pressure of several atmospheres.  As in the parent Specification, the products are soluble in weakly alkaline solutions, and films or threads may be obtained therefrom.  Also porous masses of metal oxide, or in the case of noble metals, of metal, may be obtained by heating the products to a feeble red heat with access of air.  Specification 376,481, [Group IV], is referred to.ALSO:A loose porous mass of a noble metal is obtained by heating the metal salt of a polymeric carboxylic acid either in an unshaped condition or in the form of films, fibres or plates, with access of air to a feeble red heat until organic matter is burnt off.