US3081278A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermosetting amine resins modified with a polyester and a polyacrylamide
Assignee: Wyeth Holdings LLC
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Filing: 1958-06-16
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Granted: 1963-03-12
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Expires: 1978-06-16
Abstract
No abstract record available.
Inventors
- 👤 Henry P Wohnsiedler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 03:01
CPC Classifications
C; C08; C08L; C08L61/00; C08L61/20; C08L67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
A THERMOSETTING RESINOUS COMPOSITION CAPABLE OF BEING HEAT-CURED TO A SUBSTANTIALLY INSOLUBLE AND INFUSIBLE PRODUCT HAVING A HIGH DEGREE OF DIMENSIONAL STABILITY COMPRISING A SUBSTANTIALLY HOMOGENEOUS BLEND OF FROM ABOUT 55 TO 95 PARTS BY WEIGHT OF (1) A HEATCURABLE RESINOUS REACTION PRODUCT PREPARED BY CONDENSING FORMALDEHYDE WITH AN AMIDOGEN COMPOUND SELECTED FROM THE GROUP CONSISTING OF MELAMINE AND UREA, AND CORRESPONDING FROM ABOUT 45 TO 5 PARTS BY WEIGHT OF (2) A COMBINATION OF (A) A POLYESTER PREPARED BY ESTERIFYING AN ALIPHATIC POLYHYDRIC ALCOHOL WITH A DICARBOXYLIC ACID ON THE BASIS OF FROM ABOUT 2 TO 6 MOL EQUIVALENTS OF HYDROXYL GROUPS AS REPRESENTED BY SAID ALCOHOL PER MOL EQUIVALENT OF CARBOXY GROUPS AS REPRESENTED BY SAID ACID UNTIL SAID POLYESTER HAS AN ACID NUMBER OF LESS THAN ABOUT 10, AND (B) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYACRYLAMIDE AND METHYLOL POLYACRYLAMIDE, WHEREIN THE WEIGHT RATIO OF SAID (A) TO SAID (B) IS FROM ABOUT 25:75 TO 75:25, RESPECTIVELY.
Claim 2
Dependent Claim
162 words
A THERMOSETTING RESINOUS COMPOSITION CAPABLE OF BEING HEAT-CURED TO A SUBSTANTIALLY INSOLUBLE AND INFUSIBLE PRODUCT HAVING A HIGH DEGREE OF DIMENSIONAL STABILITY COMPRISING A SUBSTANTIALLY HOMOGENEOUS BLEND OF FROM ABOUT 55 TO 95 PARTS BY WEIGHT OF (1) A HEATCURABLE RESINOUS REACTION PRODUCT PREPARED BY CONDENSING FORMALDEHYDE WITH AN AMIDOGEN COMPOUND SELECTED FROM THE GROUP CONSISTING OF MELAMINE AND UREA, AND CORRESPONDING FROM ABOUT 45 TO 5 PARTS BY WEIGHT OF (2) A COMBINATION OF (A) A POLYESTER PREPARED BY ESTERIFYING AN ALIPHATIC POLYHYDRIC ALCOHOL WITH A DICARBOXYLIC ACID ON THE BASIS OF FROM ABOUT 2 TO 6 MOL EQUIVALENTS OF HYDROXYL GROUPS AS REPRESENTED BY SAID ALCOHOL PER MOL EQUIVALENT OF CARBOXY GROUPS AS REPRESENTED BY SAID ACID UNTIL SAID POLYESTER HAS AN ACID NUMBER OF LESS THAN ABOUT 10, AND (B) A MATERIAL SELECTED FROM THE GROUP CONSISTING OF POLYACRYLAMIDE AND METHYLOL POLYACRYLAMIDE, WHEREIN THE WEIGHT RATIO OF SAID (A) TO SAID (B) IS FROM ABOUT 25:75 TO 75:25, RESPECTIVELY.
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) | 1966-03-11 | 1966-09-10 | 1967-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-11 | 1970-09-10 | 1971-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-11 | 1974-09-10 | 1975-03-12 | $7700.00 | Window Closed / Lapsed |