Patent ID: 6290830
Filing Date: 2001-09-18
Classification: C09D

Abstract:
A process for electrodepositing a substantially smooth film upon a surface of an electroconductive substrate, the process comprising immersing the electroconductive substrate serving as a charged electrode in an electrical circuit comprising the electrode and an oppositely-charged counter electrode into an electrodepositable composition that upon passing electric current between the electrodes causes a substantially continuous film to deposit upon the electroconductive substrate, in the absence of a microorganism control agent the electrodepositable composition electrodeposits on the electroconductive substrate as a substantially smooth film and which upon the addition of a microorganism control agent mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one electrodeposits on the electroconductive substrate as a comparatively rougher film, and wherein at least a portion of the microorganism control agent mixture of 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one is replaced by an aliphatic hydrocarbon material selected from the group consisting of halonitroalkanes, halonitroalkenes and mixtures thereof resulting in an electrodepositable composition that electrodeposits on the electroconductive substrate as a substantially smooth film.