Patent US2810624A successfully refreshed from Google Patents.
US2810624A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cellulose plisse fabric and method of producing by applying 1, 3-bis(hydroxy-methyl)-2-imidazolidone and chemical shrinking agent
Assignee: Rohm and Haas Co
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Filing: 1954-04-08
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Granted: 1957-10-22
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Expires: 1974-04-08
Abstract
No abstract record available.
Inventors
- 👤 Winnifred A Wardell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 21:59
CPC Classifications
D; D06; D06Q; D06Q1/00; D06Q1/02; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24446; Y10T442/00; Y10T442/20; Y10T442/2369
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A METHOD OF PRODUCING A PLISSE FABRIC COMPRISING IMPREGNATING, OVER ITS ENTIRE AREA, A FABRIC OF YARNS COMPRISING ESSENTIALLY CELLULOSE FIBERS WITH AN AQUEOUS SOLUTION CONTAINING 1 TO 15% OF A CROSS-LINKING AGENT FOR THE CELLULOSE CONSISTING ESSENTIALLY OF 1,3-BIS(HYDROXYMETHYL)-2-IMIDAZOLIDONE, HEATING THE IMPREGNATED FABRIC WITH AN ACIDIC CATALYST AT A TEMPERATURE OF AT LEAST 200*F. UNTIL THE FABRIC IS DRIED AND THE CELLULOSE REACTS WITH AND IS CROSS-LINKED BY THE IMIDAZOLIDONE, THEN IMPREGNATING LOCAL AREA OF THE FABRIC WITH A CHEMICAL SHRINKING AGENT FOR CELLULOSE SELECTED FROM THE GROUP CONSISTING OF CAUSTIC SODA, CAUSTIC POTASH, AND STRONG, LOW MOLECULAR WEIGHT QUATERNARY AMMONIUM BASES, THEN RELAXING THE IMPREGNATED FABRIC UNTIL PUCKERING OCCURS, THEN REMOVING THE SHRINKING AGENT FROM THE FABRIC WITH AN AQUEOUS WASHING MEDIUM, AND DRYING THE FABRIC.
Claim 2
Independent Claim
128 words
A METHOD OF PRODUCING A PLISSE FABRIC COMPRISING IMPREGNATING, OVER ITS ENTIRE AREA, A FABRIC OF YARNS COMPRISING ESSENTIALLY CELLULOSE FIBERS WITH AN AQUEOUS SOLUTION CONTAINING 1 TO 15% OF A CROSS-LINKING AGENT FOR THE CELLULOSE CONSISTING ESSENTIALLY OF 1,3-BIS(HYDROXYMETHYL)-2-IMIDAZOLIDONE, HEATING THE IMPREGNATED FABRIC WITH AN ACIDIC CATALYST AT A TEMPERATURE OF AT LEAST 200*F. UNTIL THE FABRIC IS DRIED AND THE CELLULOSE REACTS WITH AND IS CROSS-LINKED BY THE IMIDAZOLIDONE, THEN IMPREGNATING LOCAL AREA OF THE FABRIC WITH A CHEMICAL SHRINKING AGENT FOR CELLULOSE SELECTED FROM THE GROUP CONSISTING OF CAUSTIC SODA, CAUSTIC POTASH, AND STRONG, LOW MOLECULAR WEIGHT QUATERNARY AMMONIUM BASES, THEN RELAXING THE IMPREGNATED FABRIC UNTIL PUCKERING OCCURS, THEN REMOVING THE SHRINKING AGENT FROM THE FABRIC WITH AN AQUEOUS WASHING MEDIUM, AND DRYING THE FABRIC.
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) | 1960-10-21 | 1961-04-22 | 1961-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-10-21 | 1965-04-22 | 1965-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-10-21 | 1969-04-22 | 1969-10-22 | $7700.00 | Window Closed / Lapsed |