EP0127456A2
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EP
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Reactive dye composition
Assignee: Sumitomo Chemical Co Ltd
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Filing: 1984-05-25
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Granted: —
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Expires: 2004-05-25
Abstract
Abstract A reactive dye composition comprising (1) a dye having the formula, wherein D is an organic dye residue having at least one sulfo group, R, and R 2 are independently a hydrogen atom or an unsubstitute or substituted lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, X is a halogen atom, and Y is a group, -S0 2 CH=CH 2 or -S0 2 CH 2 CH 2 Z, in which Z is a group capable of being split by the action of an alkali, and (2) a buffer, the amount of the buffer being from 3 through 80% by weight based on the weight of the dye, and the pH value of an aqueous solution prepared from the dye composition and water of 20 times as much as the weight of the dye composition being from 3.5 through 7.5, which is superior in storage stability, and useful for dyeing or printing fiber materials to give dyed or printed products having superior fastness with high reproducibility.
Inventors
- 👤 Yutaka Kayane
- 👤 Naoki Harada
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 02:09
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0072; C09B67/0073; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
147 words
A reactive dye composition comprising (1) a dye having the formula, wherein D is an organic dye residue having at least one sulfo group, R 1 and R 2 are independently a hydrogen atom or an unsubstituted or substituted lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, X is a halogen atom, and Y is a group, -SO 2 CH = CH 2 or -SO 2 CH 2 CH 2 Z, in which Z is a group capable of being split by the action of an alkali, and (2) a buffer, the amount of the buffer being from 3 through 80% by weight based on the weight of the dye, and the pH value of an aqueous solution prepared from the dye composition and water of 20 times as much as the weight of the dye composition being from 3.5 through 7.5.
Claim 2
Dependent Claim
147 words
A reactive dye composition comprising (1) a dye having the formula, wherein D is an organic dye residue having at least one sulfo group, R 1 and R 2 are independently a hydrogen atom or an unsubstituted or substituted lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, X is a halogen atom, and Y is a group, -SO 2 CH = CH 2 or -SO 2 CH 2 CH 2 Z, in which Z is a group capable of being split by the action of an alkali, and (2) a buffer, the amount of the buffer being from 3 through 80% by weight based on the weight of the dye, and the pH value of an aqueous solution prepared from the dye composition and water of 20 times as much as the weight of the dye composition being from 3.5 through 7.5.
Claim 3
Dependent Claim
39 words
The composition according to Claim 1, wherein the buffer is at least one member selected from sodium dihydrogenphosphate, disodium hydrogenphosphate, potassium dihydrogenphosphate, dipotassium hydrogenphosphate, sodium acetate, potassium acetate, sodium borate, potassium borate, sodium oxalate, potassium oxalate, and potassium hydrogenphthalate.
Claim 4
Dependent Claim
15 words
The composition according to Claim 1, wherein the pH value is from 4.5 through 6.5.
Claim 5
Dependent Claim
26 words
The composition according to Claim 1, wherein the amount of the buffer is from 5 through 50% by weight based on the weight of the dye.
Claim 6
Dependent Claim
18 words
The composition according to Claim 1, wherein the composition further comprises an inorganic neutral salt and/or dispersing agent.
Claim 7
Dependent Claim
159 words
A process for producing a reactive dye composition, which comprises mixing a dye of the following formula, wherein D is an organic dye residue having at least one sulfo group, R 1 and R 2 are independently a hydrogen atom or an unsubstituted or substituted lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, X is a halgoen atom, and Y is a group, -S0 2 CH = CH 2 or -SO 2 CH 2 CH 2 Z, in which Z is a group capable of being split by the action of an alkali, with a buffer of from 3 through 80% by weight based on the weight uf the dye and adjusting the pH of the composition in a manner such that the pH of an aqueous solution prepared from the dye composition and water of 20 times as much as the weight of the dye composition is made to from 3.5 through 7.5.
Claim 8
Dependent Claim
159 words
A process for producing a reactive dye composition, which comprises mixing a dye of the following formula, wherein D is an organic dye residue having at least one sulfo group, R 1 and R 2 are independently a hydrogen atom or an unsubstituted or substituted lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, X is a halgoen atom, and Y is a group, -S0 2 CH = CH 2 or -SO 2 CH 2 CH 2 Z, in which Z is a group capable of being split by the action of an alkali, with a buffer of from 3 through 80% by weight based on the weight uf the dye and adjusting the pH of the composition in a manner such that the pH of an aqueous solution prepared from the dye composition and water of 20 times as much as the weight of the dye composition is made to from 3.5 through 7.5.
Claim 9
Dependent Claim
28 words
The process according to Claim 6, wherein the mixing is carried out using the dye in the form of an aqueous solution, a slurry or a wet cake.
Claim 10
Dependent Claim
175 words
A process for dyeing or printing fiber materials, which comprises contacting the materials with a reactive dye composition comprising (1) a dye having the formula, wherein D is an organic dye residue having at least one sulfo group, R 1 and R 2 are independently a hydrogen atom or an unsubstituted or substituted lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, X is a halogen atom, and Y is a group, -SO 2 CH=CH 2 or -S0 2 CH 2 CH 2 Z ' in which Z is a group capable of being split by the action of an alkali, and (2) a buffer, the amount of the buffer being from 3 through 80% by weight based on the weight of the dye, and the pH value of an aqueous solution prepared from the dye composition and water of 20 times as much as the weight of the dye composition being from 3.5 through 7.5, at a temperature of 10° to 170°C in the presence of an acid binding agent.
Claim 11
Dependent Claim
175 words
A process for dyeing or printing fiber materials, which comprises contacting the materials with a reactive dye composition comprising (1) a dye having the formula, wherein D is an organic dye residue having at least one sulfo group, R 1 and R 2 are independently a hydrogen atom or an unsubstituted or substituted lower alkyl group, A is an unsubstituted or substituted phenylene or naphthylene group, X is a halogen atom, and Y is a group, -SO 2 CH=CH 2 or -S0 2 CH 2 CH 2 Z ' in which Z is a group capable of being split by the action of an alkali, and (2) a buffer, the amount of the buffer being from 3 through 80% by weight based on the weight of the dye, and the pH value of an aqueous solution prepared from the dye composition and water of 20 times as much as the weight of the dye composition being from 3.5 through 7.5, at a temperature of 10° to 170°C in the presence of an acid binding agent.
Claim 12
Dependent Claim
15 words
The process according to Claim 8, wherein the fiber materials are hydroxyl group-containing fiber materials.
Claim 13
Dependent Claim
11 words
Fiber materials dyed or printed by the process of Claim 8.
References Cited (Backward Citations)
No citation records indexed.
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