US3329655A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oxyalkylated melamine-formaldehyde condensates and method for their preparation
Assignee: Rohm and Haas Co
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Filing: 1964-01-31
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Granted: 1967-07-04
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Expires: 1984-01-31
Abstract
No abstract record available.
Inventors
- 👤 William D Emmons
- 👤 James P Shelley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 08:11
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/40; C08G12/42; C08G12/424; C08G12/425; C08G12/427; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; D06M15/427; D06M17/00; D06M17/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A PROCESS FOR PRODUCING AN AMINOPLAST CONDENSATION PRODUCT WHICH COMPRISES MIXING AT LEAST ONE ALKYLENE OXIDE HAVING 2 TO 3 CARBON ATOMS WITH AN AQUEOUS SOLUTION, HAVING A PH OF ABOUT 8 TO 10.5 AND A TEMPERATURE IN THE RANGE FROM ROOM TEMPERATURE TO 120*C., UNDER CONDITIONS OF PRESSURE IN THE RANGE OF ATMOSPHERIC TO SUPERATMOSPHERIC TO MAINTAIN THE SOLUTION BELOW ITS BOILING POINT, OF A MELAMINE-FORMALDEHYDE CONDENSATE CONTAINING COMBINED WITH THE MELAMINE ABOUT 1.5 TO 4.5 MOLES OF FORMALDEHYDE PER MOLE OF MELAMINE, THE AMOUNT OF THE ALKYLENE OXIDE ADDED AND THEREBY CHEMICALLY COMBINED WITH THE MELAMINE-FORMALDEHYDE CONDENSATE BEING ABOUT 1.5 TO 4 MOLES PER MOLE OF MELAMINE, AND THEN REACTING THE RESULTING OXYALKYLATED CONDENSATE WITH ADDITIONAL FORMALDEHYDE BY MIXING THE FORMALDEHYDE WITH AN AQUEOUS SOLUTION OF THE OXYALKYLATED CONDENSATE AT A PH OF ABOUT 6 TO 10.5 AND A TEMPERATURE OF 30 TO 120*C. TO INTRODUCE SUFFICIENT ADDITIONAL COMBINED FORMALDEHYDE TO PROVIDE A TOTAL OF AT LEAST 5 MOLES THEREOF PER MOLE OF MELAMINE IN THE CONDENSATE.
Claim 2
Dependent Claim
169 words
A PROCESS FOR PRODUCING AN AMINOPLAST CONDENSATION PRODUCT WHICH COMPRISES MIXING AT LEAST ONE ALKYLENE OXIDE HAVING 2 TO 3 CARBON ATOMS WITH AN AQUEOUS SOLUTION, HAVING A PH OF ABOUT 8 TO 10.5 AND A TEMPERATURE IN THE RANGE FROM ROOM TEMPERATURE TO 120*C., UNDER CONDITIONS OF PRESSURE IN THE RANGE OF ATMOSPHERIC TO SUPERATMOSPHERIC TO MAINTAIN THE SOLUTION BELOW ITS BOILING POINT, OF A MELAMINE-FORMALDEHYDE CONDENSATE CONTAINING COMBINED WITH THE MELAMINE ABOUT 1.5 TO 4.5 MOLES OF FORMALDEHYDE PER MOLE OF MELAMINE, THE AMOUNT OF THE ALKYLENE OXIDE ADDED AND THEREBY CHEMICALLY COMBINED WITH THE MELAMINE-FORMALDEHYDE CONDENSATE BEING ABOUT 1.5 TO 4 MOLES PER MOLE OF MELAMINE, AND THEN REACTING THE RESULTING OXYALKYLATED CONDENSATE WITH ADDITIONAL FORMALDEHYDE BY MIXING THE FORMALDEHYDE WITH AN AQUEOUS SOLUTION OF THE OXYALKYLATED CONDENSATE AT A PH OF ABOUT 6 TO 10.5 AND A TEMPERATURE OF 30 TO 120*C. TO INTRODUCE SUFFICIENT ADDITIONAL COMBINED FORMALDEHYDE TO PROVIDE A TOTAL OF AT LEAST 5 MOLES THEREOF PER MOLE OF MELAMINE IN THE CONDENSATE.
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) | 1970-07-03 | 1971-01-02 | 1971-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-03 | 1975-01-02 | 1975-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-03 | 1979-01-02 | 1979-07-04 | $7700.00 | Window Closed / Lapsed |