US2827441A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable catalyzed amine-modified ureaformaldehyde resin compositions containing monohydric alcohol and excess formaldehyde, and methods of producing such compositions
Assignee: Honeywell International Inc
•
Filing: 1953-05-11
•
Granted: 1958-03-18
•
Expires: 1973-05-11
Abstract
No abstract record available.
Inventors
- 👤 Edward J Romatowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 05:39
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/421; C08G12/422
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A STABLE, AQUEOUS SOLUTION OF A UREA-FORMALDEHYDE RESIN, SAID SOLUTION CONTAINING FROM 35 TO 75% TOTAL RESIN SOLIDS, HAVING A PH BELOW ABOUT 4.5 AND COMPRISING (1) AN AQUEOUS SOLUTION OF A HIGHLY CONDENSED, WATER-SOLUBLE, UREA-FORMALDEHYDE RESIN HAVING A MOL RATIO OF FORMALDEHYDE TO UREA OF FROM 1.5:1 TO 2.5:1 AND WHICH HAS BEEN HEAT REACTED IN THE PRSENCE OF A WATER-SOLUBLE AMINE, (2) FROM 5 TO 60% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF HEAT-REACTED SOLUTION, OF AN ADDED WATER-SOLUBLE, ALIPHATIC, MONOHYDRIC ALCOHOL, (3) FROM 15 TO 40% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF RESIN, OF ADDED EXCESS FORMALDEHYDE AND (4) AN ACIDIC CATALYST.
Claim 2
Dependent Claim
108 words
A STABLE, AQUEOUS SOLUTION OF A UREA-FORMALDEHYDE RESIN, SAID SOLUTION CONTAINING FROM 35 TO 75% TOTAL RESIN SOLIDS, HAVING A PH BELOW ABOUT 4.5 AND COMPRISING (1) AN AQUEOUS SOLUTION OF A HIGHLY CONDENSED, WATER-SOLUBLE, UREA-FORMALDEHYDE RESIN HAVING A MOL RATIO OF FORMALDEHYDE TO UREA OF FROM 1.5:1 TO 2.5:1 AND WHICH HAS BEEN HEAT REACTED IN THE PRSENCE OF A WATER-SOLUBLE AMINE, (2) FROM 5 TO 60% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF HEAT-REACTED SOLUTION, OF AN ADDED WATER-SOLUBLE, ALIPHATIC, MONOHYDRIC ALCOHOL, (3) FROM 15 TO 40% BY WEIGHT, BASED ON THE TOTAL WEIGHT OF RESIN, OF ADDED EXCESS FORMALDEHYDE AND (4) AN ACIDIC CATALYST.
References Cited (Backward Citations)
US2085492A
Cited
US2341266A
Cited
US2334097A
Cited
US2430950A
Cited
US2586188A
Cited
US2626251A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-03-17 | 1961-09-16 | 1962-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-03-17 | 1965-09-16 | 1966-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-03-17 | 1969-09-16 | 1970-03-18 | $7700.00 | Window Closed / Lapsed |