Patent US3106439A successfully refreshed from Google Patents.
US3106439A
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Process of dry creaseproofing cellulosic fabrics with divinyl shlphone
Assignee: Tootal Broadhurst Lee Co Ltd
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Filing: 1960-01-13
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Granted: 1963-10-08
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Expires: 1980-01-13
Abstract
No abstract record available.
Inventors
- 👤 Valentine Leslie Mackenzie
- 👤 Sagar Brian Frederick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:45
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/272; D06M13/278; Y; Y10; Y10S; Y10S8/00; Y10S8/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
PROCESS FOR THE CHEMICAL MODIFICATION OF FABRIC CONTAINING AT LEAST 50 PERCENT OF FIBERS SELECTED FROM THE GROUP CONSISTING OF FIBRES OF CELLULOSE AND FIBRES OF CELLULOSE DERIVATIVES HAVING FREE HYDROXYL GROUPS, COMPRISING APPLYING TO THE FABRIC AQUEOUS SOLUTIONS OF DIVINYL SULPHONE AND A MEMBER WHICH IS UNREACTIVE TO DIVINYL SULPHONE AND WHICH IS SELECTED FROM THE GROUP CONSISTING OF ALKALINE CATALYSTS AND CATALYSTS WHICH ARE ALKALINE WHEN HEATED SO AS TO EFFECT THE APPLICATION OF SAID SOLUTION AT A PH OF AT LEAST 8.5, AND DRYING THE FABRIC BY HEATING AT A TEMPERATURE BELOW APPROXIMATELY 100*C. WITHOUT PREVIOUS REMOVAL OF THE SELECTED CATLYST UNTIL IMPROVED DRY CREASE-RESISTANCE OF SAID FABRIC IS OBTAINED.
Claim 2
Dependent Claim
113 words
PROCESS FOR THE CHEMICAL MODIFICATION OF FABRIC CONTAINING AT LEAST 50 PERCENT OF FIBERS SELECTED FROM THE GROUP CONSISTING OF FIBRES OF CELLULOSE AND FIBRES OF CELLULOSE DERIVATIVES HAVING FREE HYDROXYL GROUPS, COMPRISING APPLYING TO THE FABRIC AQUEOUS SOLUTIONS OF DIVINYL SULPHONE AND A MEMBER WHICH IS UNREACTIVE TO DIVINYL SULPHONE AND WHICH IS SELECTED FROM THE GROUP CONSISTING OF ALKALINE CATALYSTS AND CATALYSTS WHICH ARE ALKALINE WHEN HEATED SO AS TO EFFECT THE APPLICATION OF SAID SOLUTION AT A PH OF AT LEAST 8.5, AND DRYING THE FABRIC BY HEATING AT A TEMPERATURE BELOW APPROXIMATELY 100*C. WITHOUT PREVIOUS REMOVAL OF THE SELECTED CATLYST UNTIL IMPROVED DRY CREASE-RESISTANCE OF SAID FABRIC IS OBTAINED.
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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |