US4042319A
Expired / Lapsed
US
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Dye-bath oxidants
Assignee: Colloids Inc
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Filing: 1976-10-12
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Granted: 1977-08-16
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Expires: 1996-10-12
Abstract
Abstract A dye-bath oxidant comprising a mixture of bromate and iodate salts.
Inventors
- 👤 Elliot H. Baum
- 👤 Gerald R. Ferrante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:44
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/30; D06P1/22; D06P1/222
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
53 words
A dye bath oxidant for leuco sulfur or vat dyes after said dyes have been adsorbed on fibers, said oxidant consisting essentially of about 40-80 parts by weight alkali bromate and about 20-60 parts by weight alkali iodate, the alkali in each instance being selected from the group consisting of sodium and potassium.
Claim 2
Dependent Claim
53 words
A dye bath oxidant for leuco sulfur or vat dyes after said dyes have been adsorbed on fibers, said oxidant consisting essentially of about 40-80 parts by weight alkali bromate and about 20-60 parts by weight alkali iodate, the alkali in each instance being selected from the group consisting of sodium and potassium.
Claim 3
Independent Claim
68 words
A method of oxidizing leuco sulfur or vat dyes after said dyes have been adsorbed on fibers which comprises applying to said dyes, in acid dye bath, an oxidizingly effective amount of an oxidizing agent consisting essentially of about 40-80 parts by weight alkali bromate and about 20-60 parts by weight alkali iodate, the alkali in each instance being selected from the group consisting of sodium and potassium.
Claim 4
Independent Claim
68 words
A method of oxidizing leuco sulfur or vat dyes after said dyes have been adsorbed on fibers which comprises applying to said dyes, in acid dye bath, an oxidizingly effective amount of an oxidizing agent consisting essentially of about 40-80 parts by weight alkali bromate and about 20-60 parts by weight alkali iodate, the alkali in each instance being selected from the group consisting of sodium and potassium.
Claim 5
Dependent Claim
18 words
The method of claim 2 wherein the oxidizing agent is applied at a temperature above about 130° F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-08-15 | 1981-02-14 | 1981-08-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-08-15 | 1985-02-14 | 1985-08-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-08-15 | 1989-02-14 | 1989-08-16 | $7700.00 | Window Closed / Lapsed |