Nippon Kayaku Kabushiki Kaisha

Ryuzo Orita

Masayoshi Ojima

Yasuo Murakami

Shigeo Yamamura

Tadashi Matsuo

Yutaka Iizuka

Yoshiharu Suzuki

Masao Ohnishi

Tadaaki Sugimoto

Mitsuru Kurosawa

Masakatsu Miyamoto

The invention discloses a method for dyeing a hydrophobic fiber, in particular, a polyester fiber in an extremely brilliant yellow or orange with fluorescence, a method for coloring, for example, a polystyrene resin or a polyacrylate resin in a brilliant yellow or orange, and a coloring material therefore. A method for dyeing a hydrophobic fiber and a method for coloring an organic macromolecular substance characterized by using a coumarin compound represented by the general formula: ##STR1## wherein R.sub.1 and R.sub.2 independently represent each a hydrogen atom or an alkyl group having 1 to 4 carbon atoms; and a coloring material containing the coumarin compound are disclosed.

Method for dyeing or coloring organic macromolecular substance by using

A cuprophthalocyanine type compound represented by formula [1] in the form of free acid ##STR1## (wherein D is a cuprophthalocyanine radical; B is an alkylene group of 2 to 4 carbon atoms or a phenylene group which may have one or two carboxyl group(s) or sulfonic acid group(s) as a substituent(s); R is a lower alkyl group or a lower alkoxy-lower alkyl group; X is a carboxyl group or a carbamoyl group and combines with the 3- or 4-position of the pyridine ring; l is 1, 2 or 3; m is 0, 1 or 2; n is 1 or 2; and the sum of l, m and n is 2, 3 or 4) as well as a method for dyeing cellulosic fiber materials using the said compounds.

Cuprophthalocyanine type compounds

The present invention relates to a process for dyeing cellulose fibers or its union fibers which is effected according to an exhaustion dyeing method using a reactive dye containing at least one s-triazinyl group having a group of the formula: ##STR1## wherein M represents a hydrogen or an alkali metal, in an aqueous dyeing bath having a pH in the range of 4 to 10 and a dyeing temperature in the range of 110.degree. C. to below 140.degree. C.

Process for dyeing cellulose fibers of its union fibers with reactive

Anthraquinone compounds represented by the following formula are useful as dyes: ##STR1## wherein Y stands for a hydrogen atom or a nitro group, Z stands for an oxygen or sulfur atom when Y stands for a hydrogen atom, but Z stands for an oxygen atom when Y stands for a nitro group, R.sub.1 stands for a hydrogen atom or a lower alkyl group, R.sub.3 stands for a halogen atom or a group R.sub.2 wherein R.sub.2 stands for an amino, substituted or unsubstituted lower alkylamino, substituted or unsubstituted arylamino, substituted or unsubstituted alkoxy, substituted or unsubstituted aryloxy, substituted or unsubstituted alkylthio, substituted or unsubstituted arylthio group, or a group ##STR2## Q stands for a nitrogen atom or carbon atom bearing a halogen atom when R.sub.3 stands for a halogen atom, but Q stands for a nitrogen atom when R.sub.3 stands for a group R.sub.2, X stands for a halogen atom, the group ##STR3## links to the benzene ring in the 3'- or 4'-position, and M stands for an alkali metal or hydrogen atom.

Anthraquinone compounds

Growing community of inventors

Saitama, Japan

Ryuzo Orita