Abstract
Non-ionic aliphatic polymers containing ester and sulfonyl moieties, poly(ester-sulfones) were found to show anode-selective electrophoresis under electrophoretic deposition (EPD) conditions. Various polyesters containing a sulfide linkage were prepared via low-temperature polycondensation using scandium trifluoromethanesulfonate [Sc(OTf)3] as a catalyst in order to clarify the relationship between the chemical structure and the electrophoresis. Subsequently, oxone oxidation was carried out in order to obtain the expected saturated and unsaturated poly(ester-sulfone)s, and electrophoretic deposition (EPD) of the poly(ester-sulfone) onto stainless steel was performed. For unsaturated poly(ester-sulfone) onto stainless steel, subsequent UV irradiation cured the deposited film, improving the peeling strength of the coating. Various polyesters containing a sulfide linkage were prepared via low-temperature polycondensation using scandium trifluoromethanesulfonate [Sc(OTf)3] as a catalyst in order to clarify the relationship between the chemical structure and the electrophoresis. Subsequently, oxone oxidation was carried out in order to obtain the expected saturated and unsaturated poly(ester-sulfone)s, and electrophoretic deposition (EPD) of the poly(ester-sulfone) onto stainless steel was performed. For unsaturated poly(ester-sulfone) onto stainless steel, subsequent UV irradiation cured the deposited film, improving the peeling strength of the coating.
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