Nitto Kasei Co., Ltd.

Hideo Haneda

Yuya Nakagawa

Masazumi Fujikawa

Takahiro Wazaki

Shinichi Sasaoka

Makoto Nakada

Toshikazu Ishida

Provided is an organic tin-free cationic electrodeposition coating composition which does not contain organic tin compound and can sustain a superior coating curability under currently used baking conditions, and to a catalyst for the composition. A catalyst for electrodeposition coating composition containing a bismuth compound (A), wherein: the bismuth compound is a compound having a ligand prepared from a &#x3b2;-diketone represented by Chemical Formula (1) is provided. (wherein, a plurality of Rare the same or different from each other and represent a hydrocarbon group, and a number of total carbon atoms in two Ris 4 or larger)

Electrodeposition coating material composition and catalyst for electrodeposition coating material

A process for the preparation of an asymmetric triorganotin halide which is represented by the general formula [III] ##STR1## wherein R represents alkyl or phenyl, R* represents cyclohexyl or neophyl, and X represents a chlorine or bromine atom, which comprises reacting in the presence or absence of an inert organic solvent an asymmetric tetraorganotin compound of the general formula [I] ##STR2## with a tin (IV) halide of the general formula [II]

Process for preparation of asymmetric triorganotin halide

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Osaka, Japan

Hideo Haneda