US3331654A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing blends of cellulose and polyester fibers with reactive and disperse dyes
Assignee: Sandoz AG
•
Filing: 1963-12-12
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Granted: 1967-07-18
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Expires: 1983-12-12
Abstract
No abstract record available.
Inventors
- 👤 Husy Hans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:49
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/66; Y; Y10; Y10S; Y10S8/00; Y10S8/908
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A PROCESS FOR DYEING A MIXTURE OF CELLULOSIC AND POLYESTER FIBERS IN ONE ALKALINE BATH WITH REACTIVE DYE AND WITH DISPERSE DYE, WHICH DYES ARE STABLE TO ALKALI AT TEMPERATURES ABOVE 100*C., WHICH PROCESS CONSISTS OF DYEING THE MIXTURE WITHIN THE TEMPERATURE RANGE OF FROM 110* TO 140*C. AND AT A GOOD-TO-LIQUOR RATIO OF FROM 1:4 TO 1:20 IN THE PRESENCE OF A NEUTRAL SALT AND OF AT MOST 5 GRAMS PER LITER OF A BASIC FIXING AGENT WHOSE DILUTE AQUEOUS SOLUTION POSSESSES AT 20*C. A PH-VALUE OF AT LEAST 8.5.
Claim 2
Dependent Claim
91 words
A PROCESS FOR DYEING A MIXTURE OF CELLULOSIC AND POLYESTER FIBERS IN ONE ALKALINE BATH WITH REACTIVE DYE AND WITH DISPERSE DYE, WHICH DYES ARE STABLE TO ALKALI AT TEMPERATURES ABOVE 100*C., WHICH PROCESS CONSISTS OF DYEING THE MIXTURE WITHIN THE TEMPERATURE RANGE OF FROM 110* TO 140*C. AND AT A GOOD-TO-LIQUOR RATIO OF FROM 1:4 TO 1:20 IN THE PRESENCE OF A NEUTRAL SALT AND OF AT MOST 5 GRAMS PER LITER OF A BASIC FIXING AGENT WHOSE DILUTE AQUEOUS SOLUTION POSSESSES AT 20*C. A PH-VALUE OF AT LEAST 8.5.
References Cited (Backward Citations)
GB887437A
Cited
US3093437A
Cited
US3100132A
Cited
US3137687A
Cited
US3164436A
Cited
US3156519A
Cited
FR1297776A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-17 | 1971-01-16 | 1971-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-17 | 1975-01-16 | 1975-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-17 | 1979-01-16 | 1979-07-18 | $7700.00 | Window Closed / Lapsed |