Patent US2670341A successfully refreshed from Google Patents.
US2670341A
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Production of alcohol-modified urea-formaldehyde resins
Assignee: Honeywell International Inc
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Filing: 1951-10-19
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Granted: 1954-02-23
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Expires: 1971-10-19
Abstract
No abstract record available.
Inventors
- 👤 Jack D Joffe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:54
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/421; C08G12/422; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31688
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR THE PREPARATION OF ALCOHOLMODIFIED UREA-FORMALDEHYDE RESINS WHICH COMPRISES HEAT REACTING A LIQUID, NON-RESINOUS, AQUEOUS UREA-FORMALDEHYDE REACTION PRODUCT WHICH HAS BEEN PREPARED UNDER ALKALINE CONDITIONS AND HAS 60% TO 90% BY WEIGHT TOTAL SOLIDS, A MOL RATIO OF 4.0 TO 6.5 MOLES OF FORMALDEHYDE TO 1 MOL OF UREA AND A PH OF AT LEAST 7.0, WITH A SATURATED UNSUBSTITUTED MONOHYDRIC ALCOHOL CONTAINING FROM 1 TO 8 CARBON ATOMS AT A PH OF NOT OVER 4.1.
Claim 2
Dependent Claim
78 words
A PROCESS FOR THE PREPARATION OF ALCOHOLMODIFIED UREA-FORMALDEHYDE RESINS WHICH COMPRISES HEAT REACTING A LIQUID, NON-RESINOUS, AQUEOUS UREA-FORMALDEHYDE REACTION PRODUCT WHICH HAS BEEN PREPARED UNDER ALKALINE CONDITIONS AND HAS 60% TO 90% BY WEIGHT TOTAL SOLIDS, A MOL RATIO OF 4.0 TO 6.5 MOLES OF FORMALDEHYDE TO 1 MOL OF UREA AND A PH OF AT LEAST 7.0, WITH A SATURATED UNSUBSTITUTED MONOHYDRIC ALCOHOL CONTAINING FROM 1 TO 8 CARBON ATOMS AT A PH OF NOT OVER 4.1.
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) | 1957-02-22 | 1957-08-24 | 1958-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-02-22 | 1961-08-24 | 1962-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-02-22 | 1965-08-24 | 1966-02-23 | $7700.00 | Window Closed / Lapsed |