US2574114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Amide-glyoxal-formaldehyde reaction product and shrinkproofing cellulose textile fibers therewith
Assignee: Bozel Maletra SA
•
Filing: 1948-11-03
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Granted: 1951-11-06
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Expires: 1968-11-03
Abstract
No abstract record available.
Inventors
- 👤 Lehmann Rene Leon
- 👤 Lintner Josef
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:46
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/22; C08G12/10; C08G12/12; C08G12/26; C08G12/30; C08G12/32; Y; Y10; Y10S; Y10S8/00; Y10S8/17
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
90 words
A METHOD FOR PREPARING PRODUCTS FOR ENHANCING THE PROPERTIES OF TEXTILE MATERIALS, CONSISTING IN HEAT CONDENSING AN AMIDE SELECTED FROM THE GROUP CONSISTING OF UREA, MELAMINE AND OXAMIDE, WITH GLYOXAL IN AN ACID MEDIUM, THE AMOUNT OF GLYOXAL BEING LESS THAN THE STOICHIOMETRICAL AMOUNT, WHEREBY ONLY A PORTION OF THE REACTIVE NITROGEN OF SAID AMIDE IS FIXED, AND THEN HEAT CONDENSING THE PRODUCT THUS FORMED WITH FORMALDEHYE IN AN ALKALINE MEDIUM, THE AMOUNT OF FORMALDEHYDE BEING AT LEAST EQUAL TO THE STOICHIOMETICAL AMOUNT, WHEREBY THE REMAINING REACIVE NITROGEN IS FIXED.
Claim 2
Independent Claim
90 words
A METHOD FOR PREPARING PRODUCTS FOR ENHANCING THE PROPERTIES OF TEXTILE MATERIALS, CONSISTING IN HEAT CONDENSING AN AMIDE SELECTED FROM THE GROUP CONSISTING OF UREA, MELAMINE AND OXAMIDE, WITH GLYOXAL IN AN ACID MEDIUM, THE AMOUNT OF GLYOXAL BEING LESS THAN THE STOICHIOMETRICAL AMOUNT, WHEREBY ONLY A PORTION OF THE REACTIVE NITROGEN OF SAID AMIDE IS FIXED, AND THEN HEAT CONDENSING THE PRODUCT THUS FORMED WITH FORMALDEHYE IN AN ALKALINE MEDIUM, THE AMOUNT OF FORMALDEHYDE BEING AT LEAST EQUAL TO THE STOICHIOMETICAL AMOUNT, WHEREBY THE REMAINING REACIVE NITROGEN IS FIXED.
Claim 3
Dependent Claim
70 words
A METHOD FOR ENHANCING THE PROPERTIES OF CELLULOSE FIBERS, IN PARTICULAR WITH A VIEW TO ELIMINATING THEIR TENDENCY TO SHRINK AND TO SWELL WHEN WET, CONSISTING IN IMPREGNATING SAID FIBERS WITH AN AQUEOUS SOLUTION CONTAINING, TOGETHER WITH AN ACID CATALYST, THE COMPOUND PRODUCED BY THE PROCESS OF CLAIM 1, THEN WRINGING AND DRYING SAID FIBERS AND FINALLY HEATING SAID DRY FIBERS TO A TEMPERATURE OF 110* C. TO 120* C.
References Cited (Backward Citations)
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Cited
GB484691A
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GB458877A
Cited
GB510199A
Cited
US2301676A
Cited
US2388086A
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US2369948A
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US2412832A
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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) | 1954-11-05 | 1955-05-07 | 1955-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-05 | 1959-05-07 | 1959-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-05 | 1963-05-07 | 1963-11-06 | $7700.00 | Window Closed / Lapsed |