Sumitomo Chemical Company, Limited

Taizo Ohshima

Masao Nishikuri

Yasuyuki Suzuki

Kunihiko Imada

Eiji Yamada

Kunio Yamada

Katsumasa Ohtake

Ryuji Kanou

Sanae Sakaguchi

A hydrophobic fiber material is dyed in a dye bath containing at least nine disperse dyes having different chemical structures from one another within a short period of time with a good levelness.

Method for dyeing hydrophobic fiber material with disperse dye

Synthetic or semi-synthetic, or natural materials are dyed deep turquoise blue by contacting the material with a vaporized dye of the formula, ##STR1## wherein X is oxygen or imino, and R is C.sub.4 -C.sub.5 alkyl or C.sub.4 -C.sub.5 alkenyl.

Process for dry dyeing synthetic or semi-synthetic, or natural materials

A disperse dye of the formula, ##SPC1## Wherein X.sub.1 and X.sub.2 each are an amino or hydroxyl group, Y is a hydrogen or halogen atom, Z is an oxygen or sulfur atom or a direct linkage, R is a hydrogen or halogen atom or a lower alkyl or lower alkoxy group, n is an integer of from 1 to 4, and m is 1 or 2, which is suitable for dyeing synthetic fibers such as polyester fibers with a high color value and good fastnesses.

Anthraquinone disperse dyes

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Sakai, Japan

Taizo Ohshima