Patent US2956964A successfully refreshed from Google Patents.
US2956964A
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Composition comprising reaction product of aldehyde and polycarbamate and method of preparing
Assignee: PPG Industries Inc
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Filing: 1954-09-13
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Granted: 1960-10-18
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Expires: 1974-09-13
Abstract
No abstract record available.
Inventors
- 👤 Roger M Christenson
- 👤 Norman A Jacobson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:08
CPC Classifications
C; C08; C08G; C08G12/00; C08G12/02; C08G12/04; C08G12/20; C08G63/00; C08G63/91; C08G63/914; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31688
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
76 words
A RESINOUS CONDENSATION PRODCUCT RESULTING FROM HEATING AN ALDEHYDE AND A POLYCARBAMATE, SAID ALDEHYDE BEING UTILIZED IN AN AMOUNT OF ABOUT 0.5 MOLE TO 4.0 MOLES PER MOLE OF POLYCARBAMTE, SAID POLYCARBAMATE BEING THE HEAT REACTION PRODUCT OF UREA AND A FREE HYDROXYL-CONTAINING ALKYD RESIN IN THE PRESENCE OF A METAL SALT SELECTED FROM THE GROUP CONSISTING OF ZINC CHLORIDE, ZINC ACETATE, SILVER NITRATE, ANHYDROUS COBALT CHLORIDE, ANHYDROUS CUPRIC SULFATE, ANHYDROUS TIN DICHLORIDE AND TIN TETRACHLORIDE.
Claim 2
Dependent Claim
76 words
A RESINOUS CONDENSATION PRODCUCT RESULTING FROM HEATING AN ALDEHYDE AND A POLYCARBAMATE, SAID ALDEHYDE BEING UTILIZED IN AN AMOUNT OF ABOUT 0.5 MOLE TO 4.0 MOLES PER MOLE OF POLYCARBAMTE, SAID POLYCARBAMATE BEING THE HEAT REACTION PRODUCT OF UREA AND A FREE HYDROXYL-CONTAINING ALKYD RESIN IN THE PRESENCE OF A METAL SALT SELECTED FROM THE GROUP CONSISTING OF ZINC CHLORIDE, ZINC ACETATE, SILVER NITRATE, ANHYDROUS COBALT CHLORIDE, ANHYDROUS CUPRIC SULFATE, ANHYDROUS TIN DICHLORIDE AND TIN TETRACHLORIDE.
Claim 3
Dependent Claim
15 words
A RESINOUS COMPOSITION COMPRISING A BLEND OF THE CONDENSATION PRODUCT OF CLAIM 1 AND NITROCELLULOSE.
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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |