US3036028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenol-melamine-formaldehyde resin and process of preparing same
Assignee: Formica Corp
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Filing: 1958-10-20
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Granted: 1962-05-22
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Expires: 1978-10-20
Abstract
No abstract record available.
Inventors
- 👤 Alex J Malashevitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:25
CPC Classifications
C; C08; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A PROCESS COMPRISING HEAT REACTING MELAMINE AND FORMALDEHYDE IN THE PRESENCE OF FROM ABOUT 0.2% TO 10% BY WEIGHT BASED ON THE WEIGHT OF MELAMINE OF A TERTIARY AMINE, HAVING A BOILING POINT UP TO 100*C., AT A TEMPERATURE FROM ABOUT 70*C. TO REFLUX UNTIL A WATER TOLERANCE BETWEEN ABOUT 300% AND 5000% IS ATTAINED, ADDING A PHENOL AND REACTING UNTIL THE RESIN PRODUCED BECOMES HYDROPHOBIC, WHEREIN THE MOL RATIO OF MELAMINE TO FORMALDEHYDE IS BETWEEN ABOUT 1:1 AND 1:6, RESPECTIVELY, AND THE MOL RATIO OF MELAMINE TO SAID PHENOL IS BETWEEN ABOUT 1:9 AND 9:1, RESPECTIVELY.
Claim 2
Dependent Claim
97 words
A PROCESS COMPRISING HEAT REACTING MELAMINE AND FORMALDEHYDE IN THE PRESENCE OF FROM ABOUT 0.2% TO 10% BY WEIGHT BASED ON THE WEIGHT OF MELAMINE OF A TERTIARY AMINE, HAVING A BOILING POINT UP TO 100*C., AT A TEMPERATURE FROM ABOUT 70*C. TO REFLUX UNTIL A WATER TOLERANCE BETWEEN ABOUT 300% AND 5000% IS ATTAINED, ADDING A PHENOL AND REACTING UNTIL THE RESIN PRODUCED BECOMES HYDROPHOBIC, WHEREIN THE MOL RATIO OF MELAMINE TO FORMALDEHYDE IS BETWEEN ABOUT 1:1 AND 1:6, RESPECTIVELY, AND THE MOL RATIO OF MELAMINE TO SAID PHENOL IS BETWEEN ABOUT 1:9 AND 9:1, RESPECTIVELY.
References Cited (Backward Citations)
GB614037A
Cited
US2826559A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-21 | 1965-11-20 | 1966-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-21 | 1969-11-20 | 1970-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-21 | 1973-11-20 | 1974-05-22 | $7700.00 | Window Closed / Lapsed |