摘要:
Composition for sealing phosphatized metal components to improve corrosion resistance and paint adhesion, which consists essentially of:
(a) from 5 to 80 weight percent phosphoric acid; (b) from 1 to 16 weight percent of an acidsoluble zinc compound; (c) from 0.1 to 10 weight percent of a heavy metal accelerator and/or crystal refiner; (d) from 1 to 80 weight percent of a phosphonate corrosion inhibitor; and (e) sufficient water to dilute the composition to its desired strength.