CATIONIC ELECTRODEPOSITABLE COATING COMPOSITION COMPRISING LIGNIN Russian patent published in 2015 - IPC C09D197/00 C09D5/44 C08H7/00 C07G1/00 

FIELD: chemistry.

SUBSTANCE: invention relates to a cationic electrodepositable coating composition. The cationic electrodepositable coating composition comprises a film-forming resin and a lignin-containing cationic salt resin dispersed in water. The invention also relates to a cationic electrodepositable coating composition comprising water dispersed film-forming resin and a lignin containing film-forming resin wherein the lignin has not been reacted with a monofunctional compound and wherein the lignin comprises ≥5 wt % of the coating composition based on the total resin solids of the coating composition. The present invention is also directed to yet another method of making a cationic electrodepositable coating composition comprising: (i) reacting lignin and epichlorohydrin to form an intermediate reaction product, and then reacting the intermediate reaction product with an amine; and (ii) reacting the reaction product of (i) with an amine and an acid.

EFFECT: raw materials from renewable and/or inexpensive sources.

20 cl, 4 ex