US3767356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing cotton-polyester textiles with one-bath mixture of dispersed and cellulose-reactive dyestuff
Assignee: Individual
•
Filing: 1971-11-12
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Granted: 1973-10-23
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Expires: 1991-11-12
Abstract
Abstract A process for dyeing polyester-cellulose union materials in a single bath containing a mixture of disperse and specified cellulose-reactive dyes by heating to a temperature of 100*-140* C and pH 5.0 to 5.5 until the polyester component is dyed then cooling to 80* C, adding alkali and a neutral salt if the latter is not already present, and dyeing at 80*-90* C to fix the reactive dye. The reactive dyes used are those which when dyed on cotton at 120* C for 45 minutes give an equal or only a marginally less depth of shade than a similar dyeing carried out at 80* C.
Inventors
- 👤 J Turner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 14:08
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/82; D06P3/8204; D06P3/8223; D06P3/8238; D06P3/8252; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
21 words
The process of claim 1 wherein the neutral electrolyte is selected from the group consisting of sodium chloride and sodium sulphate.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-22 | 1977-04-23 | 1977-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-22 | 1981-04-23 | 1981-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-22 | 1985-04-23 | 1985-10-23 | $7700.00 | Window Closed / Lapsed |