US4155709A
Expired / Lapsed
US
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Aqueous oxidizing bath composition for vat and sulfur dyes and a process for treating reduced dyes therewith
Assignee: Olin Corp
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Filing: 1978-07-24
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Granted: 1979-05-22
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Expires: 1998-07-24
Abstract
Abstract A novel composition is described which is an aqueous oxidizing solution containing: (a) about 0.01 to about 10% by weight of an oxidant selected from the water-soluble iodate salts and the water-soluble bromate salts; (b) about 0.005% to about 5% by weight of a water-soluble vanadate salt; and (c) about 0.05 to about 10% of a water-soluble nitrate salt. An improved process for oxidizing vat or sulfur dyes is also described wherein the reduced form of the dye is oxidized by contact with the novel composition.
Inventors
- 👤 Richard L. Doerr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:57
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/22; D06P1/222; C; C09; C09B; C09B67/00; C09B67/0071; C09B67/0077; D06P1/30; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
65 words
An aqueous bath composition for oxidizing reduced vat and sulfur dyes, consisting essentially of a water-based solution containing: (a) about 0.01 to about 10% by weight of an oxidant selected from water-soluble iodate salts and water-soluble bromate salts; (b) about 0.005% to about 5% by weight of a water-soluble vanadate salt; and (c) about 0.05 to about 10% by weight of a water-soluble nitrate salt.
Claim 2
Dependent Claim
65 words
An aqueous bath composition for oxidizing reduced vat and sulfur dyes, consisting essentially of a water-based solution containing: (a) about 0.01 to about 10% by weight of an oxidant selected from water-soluble iodate salts and water-soluble bromate salts; (b) about 0.005% to about 5% by weight of a water-soluble vanadate salt; and (c) about 0.05 to about 10% by weight of a water-soluble nitrate salt.
Claim 3
Dependent Claim
22 words
The composition of claim 1 wherein said water-soluble salts are selected from alkaline earth metal salts, alkali metal salts, and ammonium salts.
Claim 4
Dependent Claim
18 words
The composition of claim 1 wherein said water-soluble salts are selected from alkali metal salts and ammonium salts.
Claim 5
Dependent Claim
18 words
The composition of claim 3 wherein said oxidant is selected from sodium, potassium and ammonium iodate or bromate.
Claim 6
Dependent Claim
17 words
The composition of claim 4 wherein said nitrate salt is selected from sodium, potassium and ammonium nitrate.
Claim 7
Dependent Claim
17 words
The composition of claim 5 wherein said vanadate salt is selected from sodium, potassium and ammonium vanadate.
Claim 8
Dependent Claim
46 words
The composition of claim 1 wherein said aqueous solution contains: (a) about 0.01 to about 5% by weight of said oxidant; (b) about 0.01 to about 2% by weight of said vanadate salt; and (c) about 0.1 to about 5% by weight of said nitrate salt.
Claim 9
Dependent Claim
22 words
The composition of claim 7 wherein said water-soluble salts are selected from alkaline earth metal salts, alkali metal salts, and ammonium salts.
Claim 10
Dependent Claim
18 words
The composition of claim 7 wherein said water-soluble salts are selected from alkali metal salts and ammonium salts.
Claim 11
Dependent Claim
18 words
The composition of claim 9 wherein said oxidant is selected from sodium, potassium and ammonium iodate or bromate.
Claim 12
Dependent Claim
17 words
The composition of claim 10 wherein said nitrate salt is selected from sodium, potassium and ammonium nitrate.
Claim 13
Dependent Claim
17 words
The composition of claim 11 wherein said vanadate salt is selected from sodium, potassium and ammonium vanadate.
Claim 14
Dependent Claim
94 words
In a process for oxidizing vat or sulfur dyes present in reduced form on cotton or regenerated cellulose textile fibers, by contacting said dyes, at a temperature of about 60°-205° F., with a slightly acidic oxidizing composition; the improvement wherein said composition comprises: an aqueous solution containing: (a) about 0.01 to about 10% by weight of an oxidant selected from water-soluble iodate salts and water-soluble bromate salts; (b) about 0.005% to about 5% by weight of a water-soluble vanadate salt; and (c) about 0.05 to about 10% by weight of a water-soluble nitrate salt.
Claim 15
Dependent Claim
94 words
In a process for oxidizing vat or sulfur dyes present in reduced form on cotton or regenerated cellulose textile fibers, by contacting said dyes, at a temperature of about 60°-205° F., with a slightly acidic oxidizing composition; the improvement wherein said composition comprises: an aqueous solution containing: (a) about 0.01 to about 10% by weight of an oxidant selected from water-soluble iodate salts and water-soluble bromate salts; (b) about 0.005% to about 5% by weight of a water-soluble vanadate salt; and (c) about 0.05 to about 10% by weight of a water-soluble nitrate salt.
Claim 16
Dependent Claim
22 words
The process of claim 13 wherein said water-soluble salts are selected from alkaline earth metal salts, alkali metal salts, and ammonium salts.
Claim 17
Dependent Claim
18 words
The process of claim 13 wherein said water-soluble salts are selected from alkali metal salts and ammonium salts.
Claim 18
Dependent Claim
18 words
The process of claim 15 wherein said oxidant is selected from sodium, potassium and ammonium iodate or bromate.
Claim 19
Dependent Claim
17 words
The process of claim 16 wherein said nitrate salt is selected from sodium, potassium and ammonium nitrate.
Claim 20
Dependent Claim
17 words
The process of claim 17 wherein said vanadate salt is selected from sodium, potassium and ammonium vanadate.
Claim 21
Dependent Claim
46 words
The process of claim 13 wherein said aqueous solution contains: (a) about 0.01 to about 5% by weight of said oxidant; (b) about 0.01 to about 2% by weight of said vanadate salt; and (c) about 0.1 to about 5% by weight of said nitrate salt.
Claim 22
Dependent Claim
22 words
The process of claim 19 wherein said water-soluble salts are selected from alkaline earth metal salts, alkali metal salts, and ammonium salts.
Claim 23
Dependent Claim
18 words
The process of claim 19 wherein said water-soluble salts are selected from alkali metal salts and ammonium salts.
Claim 24
Dependent Claim
18 words
The process of claim 21 wherein said oxidant is selected from sodium, potassium and ammonium iodate or bromate.
Claim 25
Dependent Claim
17 words
The process of claim 22 wherein said nitrate salt is selected from sodium, potassium and ammonium nitrate.
Claim 26
Dependent Claim
17 words
The process of claim 23 wherein said vanadate salt is selected from sodium, potassium and ammonium vanadate.
References Cited (Backward Citations)
GB657273A
Cited
US3775047A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-05-21 | 1982-11-20 | 1983-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-05-21 | 1986-11-20 | 1987-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-05-21 | 1990-11-20 | 1991-05-22 | $7700.00 | Window Closed / Lapsed |