US2793142A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aqueous dispersions comprising n, n'-oxydimethylene-bis-acylamides and useful as water-repellency agents for textile fibers
Assignee: EIDP Inc
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Filing: 1953-12-01
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Granted: 1957-05-21
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Expires: 1973-12-01
Abstract
No abstract record available.
Inventors
- 👤 Neal O Brace
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:06
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M13/00; D06M13/322; D06M13/402; D06M13/41
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
101 words
THE PROCESS OF TREATING TEXTILE FIBERS TO RENDER THEM WATER REPELLENT WHICH COMPRISES THE STEPS OF IMPREGNATING AND HEATING THE SAID FIBERS IN THE PRESENCE OF A MILDLY ACIDIC CATALYST WITH AN AQUEOUS DISPERSION COMPRISING A N,N''-OXYDIMETHYLENE-BIS-ACYLAMIDE OF A FATTY ACID HAVING FROM 9 TO 29 CARBON ATOMS IN THE CHAIN, FROM 2% TO 5% OF A COLLOID WHICH FORMS A PROTECTIVE ENVELOPE AROUND THE DISPERSED PARTICLES OF THE SAID AMIDE, AND FROM 5% TO 8% BY WEIGHT OF A HEAT-LABILE TRANSITORY DISPERSING AGENT WHICH LOSES ITS DISPERSING POWER AFTER HEATING, SAID PERCENTAGES BEING BASED ON THE WEIGHT OF THE ACYLAMIDE.
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) | 1960-05-20 | 1960-11-19 | 1961-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-05-20 | 1964-11-19 | 1965-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-05-20 | 1968-11-19 | 1969-05-21 | $7700.00 | Window Closed / Lapsed |