Sumitomo Chemical Company, Limited

Toshinori Fukui

Shuhei Hashizume

Nobuyuki Katsuda

Shinichi Yabushita

The invention is to provide a composition made by blending a benzodifuranone compound of the formula (I): ##STR1## wherein R.sub.1 represents a methylene or straight or branched C.sub.2 -C.sub.6 alkylene group optionally substituted with a hydroxy, C.sub.1 -C.sub.4 alkoxy or C.sub.1 -C.sub.4 alkylcarbonyloxy group; and Q represents 5- or 6-membered saturated or unsaturated heterocyclic ring residue, with an anthraquinone compound of the formula (II): ##STR2## wherein R.sub.2 represents an optionally substituted C.sub.1 -C.sub.6 alkyl, optionally substituted phenyl or C.sub.1 -C.sub.4 alkoxyphenylsulfonyl group, and a method for dyeing hydrophobic materials using the composition to obtain red dyed products with excellent pH dependency and fastnesses to light and washing.

Compositions containing benzodifuranone compounds and methods for dyeing

A composition containing benzodifuranone compounds for coloring hydrophobic materials in red which comprises at least one compound selected from the group of benzodifuranone compounds represented by the formula (I): ##STR1## wherein R.sub.1 represents a methylene group, a hydroxide group or a straight chain or branched C.sub.2-6 alkylene group which may be substituted by a C.sub.1-4 alkoxy or C.sub.1-4 alkylcarbonyloxy group, Q represents a 5- or 6-membered saturated or unsaturated heterocyclic ring residue which may be substituted; and at least one compound selected from the group consisting of benzeneazo compounds and/or benzothiazolazo compounds.

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Itami, Japan

Toshinori Fukui