| abstract |
PURPOSE: To provide the titled compsn. having excellent storage stability and rust-proofness and contg. no harmful metal, consisting of a difficulty water-soluble condensed aluminum phosphate, a zinc compd. and a boric acid ompd. n CONSTITUTION: A difficulty water-soluble, condensed aluminum phosphate (A) (e.g. aluminum metaphosphate) having solubility of 10g/l of water or below, at least one zinc comd. (B) selected from among ZnO, Zn 2 P 2 O 7 and zinc silicate and at least one boric acid compd. (C) selected from among calcium borate, magnesium borate and barium (meta)phosphate are blended in a weight ratio of P 2 O 5 /ZnO/B 2 O 3 of 1/0.1W4.5/0.5W13. n COPYRIGHT: (C)1987,JPO&Japio |