WATER-SOLUBLE COMPOSITION OF INORGANIC SALT

摘要

PURPOSE:To obtain the title composition useful as a spinning dope having excellent stringiness, providing alumina fiber having excellent strength, comprising a basic Al salt having an acid radical of nitric acid, lactic acid or hydrochloric acid and a salt of auxiliary, by prescribing alumina concentration and number of mols of the acid radical. CONSTITUTION:The aimed composition which comprises (A) a basic aluminum salt and (B) a salt of auxiliary (preferably salt of Y, etc. and acid radical derived from hydrochloric acid or sulfuric acid), has the acid radical of the salt selected from nitric acid, lactic acid and hydrochloric acid, contains =15% aluminum as alumina and has a number of mols of acid radical contained in the components A and B based on 100g total noncombustible oxides of =3 in the case of radical of nitric acid, of =1 in the case of radical of lactic acid, of =0.8 in the case of hydrochloric acid and of =3 total amounts of acid radicals in the case of two or more acid radicals. The composition is preferably obtained by concentrating a water-soluble composition containing the components A and B so as to make =15% alumina concentration and adjusting to the amount of acid radical.