Patent ID: 8008414

Claim:
An organoantimony compound represented by the formula (1): wherein R 1 and R 2 are C 1 -C 8 alkyl, aryl, substituted aryl, or an aromatic heterocyclic group; R 3 and R 4 are each a hydrogen atom or C 1 -C 8 alkyl; and R 5 is an aryl group unsubstituted or substituted by halogen, hydroxyl, alkoxyl, amino, nitro, cyano, —COR a (wherein R a is C 1 -C 8 alkyl, aryl, C 1 -C 8 alkoxyl, or aryloxyl), sulfonyl, or trifluoromethyl, an aromatic heterocyclic group, oxycarbonyl, or cyano; provided that R 3 and R 4 are not hydrogen atoms simultaneously.