Patent US3261795A successfully refreshed from Google Patents.
US3261795A
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Process for the manufacture of stable amino resin solutions
Assignee: Boehme Fettchemie GmbH
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Filing: 1964-01-29
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Granted: 1966-07-19
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Expires: 1984-01-29
Abstract
No abstract record available.
Inventors
- 👤 Goullon Rudolf
- 👤 Rehnelt Kurt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:17
CPC Classifications
D; D21; D21H; D21H17/00; D21H17/20; D21H17/33; D21H17/46; D21H17/47; D21H17/49; D21H17/50; C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/421; C08G12/422; C08G12/428; C08L; C08L61/00; C08L61/20; C08L61/30; C08L61/32; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/427
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
116 words
A PROCESS FOR THE PRODUCTION OF AQUEOUS AMINO RESIN CONDENSATE SOLUTIONS, STABLE UPON PROLONGED STORAGE AND EXOSURE TO TEMPERATURES DOWN TO 0*C. AGAINST MONOMER AND OLIGOMER PRECIPITATION, WHICH COMPRISES INCORPORATING IN SAID SOLUTIONS SUBSTANTIALLY 0.5 TO 10 PERCENT MY WEIGHT, CALCULATED ON SAID CONDENSATE, OF A RESIN OBTAINED BY THE CONDENSATION OF 2-3 MOLS UREA WITH SUBSTANTIALLY 9-10 MOLS FORMALDEHYDE FOLLOWED BY ALKOXYLATION OF THE REACTION PRODUCT WITH 0.4 TO 0.8 MOLS, PER MOL UREA, OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, AND MIXTURES THEREOF, AND ETHERIFICATION WITH SUBSTANTIALLY 0.5 TO 1 MOL, PER MOL UREA, OF AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, NPROPANOL AND ISOPROPANOL.
Claim 2
Dependent Claim
116 words
A PROCESS FOR THE PRODUCTION OF AQUEOUS AMINO RESIN CONDENSATE SOLUTIONS, STABLE UPON PROLONGED STORAGE AND EXOSURE TO TEMPERATURES DOWN TO 0*C. AGAINST MONOMER AND OLIGOMER PRECIPITATION, WHICH COMPRISES INCORPORATING IN SAID SOLUTIONS SUBSTANTIALLY 0.5 TO 10 PERCENT MY WEIGHT, CALCULATED ON SAID CONDENSATE, OF A RESIN OBTAINED BY THE CONDENSATION OF 2-3 MOLS UREA WITH SUBSTANTIALLY 9-10 MOLS FORMALDEHYDE FOLLOWED BY ALKOXYLATION OF THE REACTION PRODUCT WITH 0.4 TO 0.8 MOLS, PER MOL UREA, OF A SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF ETHYLENE OXIDE, PROPYLENE OXIDE, AND MIXTURES THEREOF, AND ETHERIFICATION WITH SUBSTANTIALLY 0.5 TO 1 MOL, PER MOL UREA, OF AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF METHANOL, ETHANOL, NPROPANOL AND ISOPROPANOL.
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) | 1969-07-18 | 1970-01-17 | 1970-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-18 | 1974-01-17 | 1974-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-18 | 1978-01-17 | 1978-07-19 | $7700.00 | Window Closed / Lapsed |