US2688607A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Modified melamine resin and process for preparing the same
Assignee: Wyeth Holdings LLC
•
Filing: 1951-12-11
•
Granted: 1954-09-07
•
Expires: 1971-12-11
Abstract
No abstract record available.
Inventors
- 👤 Suen Tzeng Jiueq
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:16
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/26; C08G12/34; D; D06; D06M; D06M15/00; D06M15/19; D06M15/37; D06M15/39; D06M15/423; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31942; Y10T428/31949; Y10T428/31964; Y10T442/00; Y10T442/20; Y10T442/2369; Y10T442/2385; Y10T442/2393
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
A PROCESS FOR PREPARING A WATERSOLUBLE MELAMINEFORMALDEHYDE RESIN COMPRISING REACTING AT ELEVATED TEMPERATURE MELAMINE, FORMALDEHYDE AND A COMPOUND HAVING A GENERAL FORMULA: NH2(CH2) NSO3X, WHEREIN N IS A WHOLE NUMBER BETWEEN 1 AND 6, INCLUSIVE, AND X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF H, LI, K, NA, NH4 AND HYDROGEN IN COMBINATION WITH A WATER SOLUBLE TERTIARY AMINE AND, WHEREIN THE MOL RATIONS OF THE REACTANTS AND 1:2:0.03 TO 1:5:0.5, RESPECTIVELY.
Claim 2
Dependent Claim
74 words
A PROCESS FOR PREPARING A WATERSOLUBLE MELAMINEFORMALDEHYDE RESIN COMPRISING REACTING AT ELEVATED TEMPERATURE MELAMINE, FORMALDEHYDE AND A COMPOUND HAVING A GENERAL FORMULA: NH2(CH2) NSO3X, WHEREIN N IS A WHOLE NUMBER BETWEEN 1 AND 6, INCLUSIVE, AND X IS A MEMBER SELECTED FROM THE GROUP CONSISTING OF H, LI, K, NA, NH4 AND HYDROGEN IN COMBINATION WITH A WATER SOLUBLE TERTIARY AMINE AND, WHEREIN THE MOL RATIONS OF THE REACTANTS AND 1:2:0.03 TO 1:5:0.5, RESPECTIVELY.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-09-06 | 1958-03-08 | 1958-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-09-06 | 1962-03-08 | 1962-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-09-06 | 1966-03-08 | 1966-09-07 | $7700.00 | Window Closed / Lapsed |