Patent ID: 6559204
Filing Date: 2003-05-06
Classification: C09D

Abstract:
An autodepositing liquid composition comprising water and the following components:(A) at least 1.0%, based on the whole composition, of a component of dissolved, dispersed, or both dissolved and dispersed film forming polymer molecules; (B) an emulsifying agent component in sufficient quantity to emulsify any water insoluble part of any other component so that, in the autodepositing liquid composition, no separation or segregation of bulk phases that is perceptible with normal unaided human vision occurs during storage at 25Â° C. for at least 24 hours after preparation of the autodepositing liquid composition, in the absence of contact of the autodepositing liquid composition with any metal that reacts with the autodepositing liquid composition to produce therein dissolved metal cations with a charge of at least two; (C) a dissolved accelerator component selected from the group consisting of acids, oxidizing agents, and complexing agents that are not part of immediately previously recited components (A) or (B), this accelerator component being sufficient in strength and amount to impart to the total autodepositing liquid composition an oxidation-reduction potential that is at least 100 mV more oxidizing than a standard hydrogen electrode; and (D) a component of dispersed gas-filled non-film-forming polymer walled particles that are not part of any of immediately previously recited components (A) through (C), wherein the volume, measured in ml, of component (D) in the composition has a ratio to the mass, measured in grams, of the total of components (A) and (B) in the same composition that is at least about 0.01 ml/g.