Nippon Kayaku Kabushiki Kaisha

Other

Nippon Kayaku Co., Ltd

Eiichi Ogawa

Yasuo Shirasaki

Mariko Umeda

Toru Tabei

Junji Toda

Nobuyuki Yamanaka

Junji Odani

Hideshiro Nomura

Shin-ichi Namba

Kazuo Hanawa

Yoshikazu Aizawa

Shigemitsu Yabe

Takahiro Kohsaka

The present invention provides a disazo compound which in a free acid form is represented by the formula (1) and which has high ability to dye cellulosic fibers and attains efficient dyeing with satisfactory reproducibility; and a method of dyeing cellulosic fibers with the compound. Also provided are: a reactive dye composition comprising a compound represented by the formula (1) and a specific red reactive dye and/or a specific blue reactive dye; and a method of dyeing cellulosic fibers with the composition.In the formula, Rand Reach represents hydrogen atom or methoxy group; Rand Reach represents hydrogen atom, methyl group, acetylamino group, ureido group, etc.; and m is 2 or 3.

Disazo compound, reactive dye composition, and method of dyeing cellulose or cellulose-containing fibers

Formazane compounds and method of dyeing using the same

A method of printing a polyamide structure using two or more of water-soluble dye with an inorganicity/organicity value of 1 to 7 selected so that the ones with the largest and smallest inorganicity/organicity values show a difference of 2 or below between their two such values, to allow the polyamide structure to be printed with no uneven color, high color reproducibility and excellent ink bleeding prevention.

Method of printing a polyamide structure, such a method based on an inkjet system and an inkset for such a system

Formazan compounds and method of dyeing therewith

Process for dyeing textiles containing polyester fibers and dyeing

A reactive dye represented by the formula (I), ##STR1## wherein R represents --NH.sub.2 or --NHC.sub.2 H.sub.4 SO.sub.3 M, and M's independently represent Li.sup..sym., Na.sup..sym., K.sup..sym. or .sup..sym. NH(C.sub.2 H.sub.4 OH).sub.3, provided that at least one of M's represents Li.sup..sym. or .sup..sym. NH(C.sub.2 H.sub.4 OH).sub.3. This reactive dye easily gives a stable liquid composition and is useful to dye cellulosic or polyamide fibers.

Aqueous liquid composition of naphthalene sulfonate reactive dye with at

A chromium complex compound represented as the free acid form by the formula (I): ##STR1## wherein X.sup.1 represents a hydrogen atom, a methyl group, a methoxy group or a sulfonic acid group; X.sup.2, X.sup.3 and X.sup.4 represent independently a hydrogen atom, a chlorine atom, a methyl gorup, a methoxy group, a carboxyl group or a sulfonic acid group; Y represents a hydrogen atom or a sulfonic acid group; Z represents a chlorine atom, a fluorine atom or --N.sup.30 (R).sub.3 (R represents a C.sub.1 to C.sub.4 -alkyl group), ##STR2## and M represents a hydrogen atom or an alkali metal, a process for producing the chromium complex compound (I) and a method for dyeing cellulosic fibers with the same. The chromium complex compound represented by formula (I) is excellent in affinity to cellulosic fibers and in color-yield, build-up properties and fastness properties. These compounds are dyes for cellulosic fibers.

Chromium complex compound

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Kitakatsushika-gun, Japan

Eiichi Ogawa