US4934009A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilized aqueous liquid composition of fiber-reactive azo dye: mixture with vinyl-sulphonyl and beta-sulphato ethyl-sulphonyl substituents for low temperature stability
Assignee: Sumitomo Chemical Co Ltd
•
Filing: 1988-03-14
•
Granted: 1990-06-19
•
Expires: 2008-03-14
Abstract
Abstract An aqueous liquid dye composition comprising 5 to 50% by weight of a mixture of at least one dye represented by the following formula (I), <IMAGE> (I) wherein A is a phenylene or naphthylene group unsubstituted or substituted by at least one member selected from methyl, methoxy, sulfo and carboxy, R is methyl or carboxy, Y1, Y2 and Y3 independently of one another are each hydrogen, chloro, methyl or sulfo, and Z is a group splittable by the action of an alkali, and at least one dye represented by the following formula (II), <IMAGE> (II) where A, R, Y1 Y2 and Y3 are as defined above, which can be stored for a long period of time even at lower temperatures such as 5 DEG C. or lower without crystallization of the dye.
Inventors
- 👤 Noriaki Yamauchi
- 👤 Yutaka Kayane
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:23
CPC Classifications
C; C09; C09B; C09B67/00; C09B67/0033; C09B67/0046; C09B67/0051; C09B62/00; C09B62/44; C09B62/503; C09B62/507; C09B62/51; C09B67/0071; C09B67/0072; C09B67/0073; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/918; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
171 words
An aqueous liquid dye composition comprising 5 to 50% by weight of a mixture of at least one dye represented by the following formula (I) ##STR9## wherein A is a phenylene or naphthylene group unsubstituted or substituted by at least one member selected from methyl, methoxy, sulfo and carboxy, R is methyl or carboxy, Y 1 , Y 2 and Y 3 independently of one another are each hydrogen, chloro, methyl or sulfo, and Z is a group splittable by the action of an alkali, and at least one dye represented by the following formula (II), ##STR10## wherein A, R, Y 1 , Y 2 , and Y 3 are as defined above, the mixing weight ratio of the dye of the formula (I) to the dye of the formula (II) being from 95:5 to 50:50, the pH of the composition ranging from 3 to 7, wherein the dyes of the formulas (I) and (II) having been produced by a conventional production process which produces an inorganic salt as a byproduct.
Claim 2
Dependent Claim
171 words
An aqueous liquid dye composition comprising 5 to 50% by weight of a mixture of at least one dye represented by the following formula (I) ##STR9## wherein A is a phenylene or naphthylene group unsubstituted or substituted by at least one member selected from methyl, methoxy, sulfo and carboxy, R is methyl or carboxy, Y 1 , Y 2 and Y 3 independently of one another are each hydrogen, chloro, methyl or sulfo, and Z is a group splittable by the action of an alkali, and at least one dye represented by the following formula (II), ##STR10## wherein A, R, Y 1 , Y 2 , and Y 3 are as defined above, the mixing weight ratio of the dye of the formula (I) to the dye of the formula (II) being from 95:5 to 50:50, the pH of the composition ranging from 3 to 7, wherein the dyes of the formulas (I) and (II) having been produced by a conventional production process which produces an inorganic salt as a byproduct.
Claim 3
Dependent Claim
17 words
An aqueous liquid dye composition according to claim 1, wherein the ratio is from 90:10 to 60:40.
Claim 4
Dependent Claim
23 words
An aqueous liquid dye composition according to claim 1, wherein the dye of the formula (I) has sulfato (--OSO 3 H) as Z.
Claim 5
Dependent Claim
20 words
An aqueous liquid dye composition according to claim 1, wherein the composition additionally comprises a pH buffer or a surfactant.
Claim 6
Dependent Claim
24 words
An aqueous liquid dye composition according to claim 1, wherein the composition comprises sodium sulfate in an amount of 2.5% by weight or less.
Claim 7
Dependent Claim
188 words
A process for stabilizing an aqueous liquid dye solution containing a dye represented by the following formula (I), ##STR11## wherein A is a phenylene or naphthylene group unsubstituted or substituted by at least one member selected from methyl, methoxy, sulfo and carboxy, R is a methyl or carboxy group, Y 1 , Y 2 and Y 3 independently of one another are each hydrogen, chloro, methyl or sulfo, and Z is a group splittable by the action of an alkali, which comprises mixing the liquid dye solution with an alkali, keeping the mixture at a temperature of about 40° to about 60° C. to form an aqueous liquid dye composition comprising the dye of the formula (I) and a dye represented by the following formula (II) ##STR12## wherein A, R, Y 1 , Y 2 and Y 3 are as defined above in a weight ration of 95:5 to 50:50, adjusting the aqueous liquid dye composition within a pH of 3 to 7, wherein the dyes of the formulas (I) and (II) having been produced by a conventional production process which produces an inorganic salt as a byproduct.
Claim 8
Dependent Claim
188 words
A process for stabilizing an aqueous liquid dye solution containing a dye represented by the following formula (I), ##STR11## wherein A is a phenylene or naphthylene group unsubstituted or substituted by at least one member selected from methyl, methoxy, sulfo and carboxy, R is a methyl or carboxy group, Y 1 , Y 2 and Y 3 independently of one another are each hydrogen, chloro, methyl or sulfo, and Z is a group splittable by the action of an alkali, which comprises mixing the liquid dye solution with an alkali, keeping the mixture at a temperature of about 40° to about 60° C. to form an aqueous liquid dye composition comprising the dye of the formula (I) and a dye represented by the following formula (II) ##STR12## wherein A, R, Y 1 , Y 2 and Y 3 are as defined above in a weight ration of 95:5 to 50:50, adjusting the aqueous liquid dye composition within a pH of 3 to 7, wherein the dyes of the formulas (I) and (II) having been produced by a conventional production process which produces an inorganic salt as a byproduct.
References Cited (Backward Citations)
US4072463A
Cited
US4149850A
Cited
US4078884A
Cited
US4118184A
Cited
JPS54131627A
Cited
US4482350A
Cited
US4448583A
Cited
US4749380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-06-18 | 1993-12-18 | 1994-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-06-18 | 1997-12-18 | 1998-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-06-18 | 2001-12-18 | 2002-06-19 | $7700.00 | Window Closed / Lapsed |