US2898238A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treating textiles with ethylene urea-formaldehyde reaction products
Assignee: Wyeth Holdings LLC
•
Filing: 1956-08-20
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Granted: 1959-08-04
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Expires: 1976-08-20
Abstract
No abstract record available.
Inventors
- 👤 Jr William Julins Van Loo
- 👤 Salsbury Jason Melvin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:03
CPC Classifications
D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10T; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2385; Y10T442/2393
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
A PROCESS COMPRISING TREATING A TEXTILE MATERIAL CONTAINING AT LEAST 50% OF CELLULOSIC MATERIAL WITH A STABLE, AQUEOUS SOLUTION HAVING A PH OF BETWEEN 1.0 AND ABOUT 3,5, CONSISTING ESSENTIALLY OF AN ETHYLENE UREA-FORMALDEHYDE REACTION PRODUCT AND AN ACID-ACTING CURING CATALYST, HAVING AN IONIZATION CONSTANT OF AT LEAST 10-5, SO AS TO APPLY THERETO BETWEEN ABOUT 5% AND ABOUT 25% RESIN SOLIDS, BASED ON THE WEIGHT OF THE TEXTILE MATERIAL, AND THEREAFTER CURING SAID ETHYLENE UREA-FORMALDEHYDE REACTION PRODUCT TO WATER-INSOLUBLE STATE ON SAID MATERIAL BY THE APPLICATION OF HEAT.
Claim 2
Dependent Claim
89 words
A PROCESS COMPRISING TREATING A TEXTILE MATERIAL CONTAINING AT LEAST 50% OF CELLULOSIC MATERIAL WITH A STABLE, AQUEOUS SOLUTION HAVING A PH OF BETWEEN 1.0 AND ABOUT 3,5, CONSISTING ESSENTIALLY OF AN ETHYLENE UREA-FORMALDEHYDE REACTION PRODUCT AND AN ACID-ACTING CURING CATALYST, HAVING AN IONIZATION CONSTANT OF AT LEAST 10-5, SO AS TO APPLY THERETO BETWEEN ABOUT 5% AND ABOUT 25% RESIN SOLIDS, BASED ON THE WEIGHT OF THE TEXTILE MATERIAL, AND THEREAFTER CURING SAID ETHYLENE UREA-FORMALDEHYDE REACTION PRODUCT TO WATER-INSOLUBLE STATE ON SAID MATERIAL BY THE APPLICATION OF HEAT.
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) | 1962-08-03 | 1963-02-02 | 1963-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-08-03 | 1967-02-02 | 1967-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-08-03 | 1971-02-02 | 1971-08-04 | $7700.00 | Window Closed / Lapsed |