US3230031A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making aryloxyethylsul-fonylethyl ethers of cellulose
Assignee: Individual
•
Filing: 1962-02-06
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Granted: 1966-01-18
•
Expires: 1982-02-06
Abstract
No abstract record available.
Inventors
- 👤 Clark M Welch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:54
CPC Classifications
D; D06; D06M; D06M13/00; D06M13/244; D06M13/248; D06M13/272; D06M13/278; C; C08; C08B; C08B11/00; C08B11/02; C08B11/04; C08B15/00; C08B15/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A PROCESS FOR THE PREPARTION OF CROSSLINKED ARYLOXYETHYLSULFONYLETHYL ETHERS OF CELLULOSE THAT IN THE FORM OF TEXTILE FABRICS EXHIBIT WET AND DRY WRINKLE RESISTANCE AND ENHANCED DIMENSIONAL STABILITY, WHICH PROCESS COMPRISES WETTING THE CELLULOSE WITH AN AQUEOUS SOLUTION THAT CONTAINS FROM ABOUT 0.5% TO ABOUT 30% BY WEIGHT OF AN ALKALINE CATALYST TOGETHER WITH AN ADDUCT OF DIVINYL SULFONE AND A PHENOL, AND KEEPING THE WETTED CELLULOSE AT A TEMPERATURE OF FROM 20* TO 170*C. FOR FROM 0.5 TO 30 MINUTES.
Claim 2
Dependent Claim
81 words
A PROCESS FOR THE PREPARTION OF CROSSLINKED ARYLOXYETHYLSULFONYLETHYL ETHERS OF CELLULOSE THAT IN THE FORM OF TEXTILE FABRICS EXHIBIT WET AND DRY WRINKLE RESISTANCE AND ENHANCED DIMENSIONAL STABILITY, WHICH PROCESS COMPRISES WETTING THE CELLULOSE WITH AN AQUEOUS SOLUTION THAT CONTAINS FROM ABOUT 0.5% TO ABOUT 30% BY WEIGHT OF AN ALKALINE CATALYST TOGETHER WITH AN ADDUCT OF DIVINYL SULFONE AND A PHENOL, AND KEEPING THE WETTED CELLULOSE AT A TEMPERATURE OF FROM 20* TO 170*C. FOR FROM 0.5 TO 30 MINUTES.
References Cited (Backward Citations)
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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) | 1969-01-17 | 1969-07-19 | 1970-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-17 | 1973-07-19 | 1974-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-17 | 1977-07-19 | 1978-01-18 | $7700.00 | Window Closed / Lapsed |