US3816067A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for printing and pad dyeing polyamide fibrous materials
Assignee: Hoechst AG
•
Filing: 1972-06-15
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Granted: 1974-06-11
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Expires: 1992-06-15
Abstract
Abstract Process for preparing on textile materials consisting of polyamide fibres or of their mixtures with cellulose fibres, or containing such fibres or fibre blends, prints and pad-dyeings having extremely good fastnesses to wet processing, using reactive dyestuffs for printing and padding, and fixing these dyestuffs by steaming at a pH range of from about 6 to 11, preferably of from 7 to 8.5.
Inventors
- 👤 G Pelster
- 👤 V Wurtz
- 👤 E Feess
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:25
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/02; D06P3/04; D06P3/10; D06P3/82; D06P3/8204; D06P3/8219; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/924
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A process according to claim 1 wherein said fixing is by steam at a temperature of about 98* C. to about 130* C. at a pressure of about atmospheric to about 1.5 atmospheres gauge.
Claim 2
Dependent Claim
23 words
A process according to claim 1 which further comprises washing said textile material subsequent to said fixing in a weakly alkaline aqueous bath.
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) | 1977-06-10 | 1977-12-10 | 1978-06-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-10 | 1981-12-10 | 1982-06-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-10 | 1985-12-10 | 1986-06-11 | $7700.00 | Window Closed / Lapsed |