Patent EP0697670A1 successfully refreshed from Google Patents.
US2628151A
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US
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Process for simultaneously stabilizing and applying a vat dye to textile material comprising regenerated cellulose
Assignee: Akzo Nobel UK PLC
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Filing: 1949-11-25
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Granted: 1953-02-10
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Expires: 1969-11-25
Abstract
No abstract record available.
Inventors
- 👤 Leslie L Walmsley
- 👤 Raymond E Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 04:15
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/22; D06M; D06M13/00; D06M13/10; D06M13/12; D06P1/44; D06P1/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
147 words
A METHOD OF STABILIZING TEXTILE MATERIALS PREDOMINANTLY OF REGENERATED CELLULOSE AGAINST PROGRESSIVE DIMENSIONAL SHRINKAGE UNDER REPEATED WASHINGS AND AGAINST NORMAL PULLING OUT DURING FINAL FINISHING OPERATIONS PERFORMED SUBSEQUENTLY TO THE STABILIZATION AND SIMULTANEOUSLY APPLYING COLOR TO THE TEXTILE WHICH COMPRISES WETTING THE FIBERS OF THE MATERIAL WITH A FLUID AQUEOUS MEDIUM HAVING A PH BETWEEN 1.2 AND 6.5 AND CONTAINING A WATER-INSOLUBLE ALKALI-SOLUBLE CELLULOSE ETHER, A DISPERED VAT PIGMENT AND FORM ALDEHYDE, DRYING THE TEXTILE MATERIAL IN THE ABSENCE OF CONTACT PRESSURE, HEATING THE DRIED TEXTILE MATERIAL IN THE ABSENCE OF CONTACT PRESSURE TO CURE THE FORMALDEHYDE, TREATING THE TEXTILE MATERIAL, AFTER SAID HEATING STEP, WITH AN AQUEOUS ALKALINE SOLUTION TO REDUCE THE VAT PIGMENT TO THE SOLUBLE LEUCO VAT ON THE TEXTILE MATERIAL AND THEN TREATING THE TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION OF A MILD OXIDIZING AGENT TO REGENERATE THE PIGMENT ON THE TEXTILE MATERIAL.
Claim 2
Independent Claim
147 words
A METHOD OF STABILIZING TEXTILE MATERIALS PREDOMINANTLY OF REGENERATED CELLULOSE AGAINST PROGRESSIVE DIMENSIONAL SHRINKAGE UNDER REPEATED WASHINGS AND AGAINST NORMAL PULLING OUT DURING FINAL FINISHING OPERATIONS PERFORMED SUBSEQUENTLY TO THE STABILIZATION AND SIMULTANEOUSLY APPLYING COLOR TO THE TEXTILE WHICH COMPRISES WETTING THE FIBERS OF THE MATERIAL WITH A FLUID AQUEOUS MEDIUM HAVING A PH BETWEEN 1.2 AND 6.5 AND CONTAINING A WATER-INSOLUBLE ALKALI-SOLUBLE CELLULOSE ETHER, A DISPERED VAT PIGMENT AND FORM ALDEHYDE, DRYING THE TEXTILE MATERIAL IN THE ABSENCE OF CONTACT PRESSURE, HEATING THE DRIED TEXTILE MATERIAL IN THE ABSENCE OF CONTACT PRESSURE TO CURE THE FORMALDEHYDE, TREATING THE TEXTILE MATERIAL, AFTER SAID HEATING STEP, WITH AN AQUEOUS ALKALINE SOLUTION TO REDUCE THE VAT PIGMENT TO THE SOLUBLE LEUCO VAT ON THE TEXTILE MATERIAL AND THEN TREATING THE TEXTILE MATERIAL WITH AN AQUEOUS SOLUTION OF A MILD OXIDIZING AGENT TO REGENERATE THE PIGMENT ON THE TEXTILE MATERIAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-02-10 | 1956-08-11 | 1957-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-02-10 | 1960-08-11 | 1961-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-02-10 | 1964-08-11 | 1965-02-10 | $7700.00 | Window Closed / Lapsed |