PROCESS FOR PRODUCING ACIDIC COMPOSITIONS AND ACIDIC COMPOSITIONS OBTAINED

摘要

Acidic compositions having a pH value of less than about 1 are produced by a process comprising the steps of mixing from about 45 to about 85 weight percent hydrochloric acid with from about 20 to about 55 weight percent phosphoric acid in an acid resistant vessel for an effective period of time to provide a substantially homogeneous acidic mixture; admixing the homogeneous acidic mixture into an effective amount of water to provide an aqueous acidic mixture; and admixing from about 2 to about 20 weight percent of a hydroxy carboxylic acid and from about 0 to about 20 weight percent of a hydroxy carboxylic acid and from about 0 to about 20 weight percent of a dicarboxylic acid into the aqueous acidic mixture to produce aqueous acidic compositions having pH values of less than about 1. The aqueous acidic compositions so produced can then be admixed with various constituents, such as polyamines, inorganic acids or organic acids, to provide modified aqueous acidic compositions.