| 摘要 |
An improvement in a cathodic electrodepositable coating composition comprising an aqueous dispersion of (1) at least one blocked isocyanate crosslinker and (2) at least one cationic epoxy-based resin is obtained by employing as at least a portion of component (1) at least 20, percent by weight based on the total weight of component (1) at least one blocked isocyanate-containing prepolymer crosslinker composition wherein said isocyanate-containing prepolymer is the reaction product of a polyisocyanate and a polyether polyol. |
