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Return to Abstracts of Patents Return to Abstracts of Patents 500-749 Patent Abstracts548. ------. [DREYFUS, H.] [Organic Oxygen Compounds.] French Patent 697,727, June 20, 1930. Chem. Abs., vol. 25, 1931, pl. 3011. Describes the preparation of compounds similar to those prepared in French Patent 697,726 (abs. 547). Catalysts composed of or containing compounds of metals of groups 1 and 2 are used with oxy acids of elements of groups 2, 3, 4, and 5 such as borates, aluminates, zincates, silicates, or phosphates of alkali, or alkaline earth metals or Cu. See also abs. 546, 549, and 550. |