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Individual
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Individual
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Priority to ES276627ApriorityCriticalpatent/ES276627A1/en
Publication of ES276627A1publicationCriticalpatent/ES276627A1/en
Preventing Corrosion Or Incrustation Of Metals
(AREA)
Heat Treatment Of Articles
(AREA)
Abstract
Process for the manufacture of phosphoric acid of improved purity, by the attack of a natural calcium phosphate by means of the sulfuric acid characterized by comprising the hot treatment (attack) of the phosphate powder by the aqueous sulfuric acid in excess and then the precipitation of this excess by addition of a calcium compound, in the presence of a bait or crystallization impeller, with cooling. (Machine-translation by Google Translate, not legally binding)
ES276627A1962-04-181962-04-18New procedure for manufacturing iron tubes for decoration (Machine-translation by Google Translate, not legally binding)
ExpiredES276627A1
(en)
A procedure for the preparation of (3-trifluormethylphenoxy) - (4-chlorophenyl) acetate of 2-acetamidoetilo. (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of aluminum, bismuto and 8-hydroxyquinoline salts of pamoic acid (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of citrate decided of acetyle-2-dimethylamine etoxy-5-carvacrol. (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of alpha-escina by isomerization of beta-escina in aqueous solution. (Machine-translation by Google Translate, not legally binding)