Patent US3646161A successfully refreshed from Google Patents.
US2973331A
Expired / Lapsed
US
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Forming alkyd resins by the incremental addition of the monobasic acid
Assignee: Heyden Newport Chemical Corp
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Filing: 1957-02-01
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Granted: 1961-02-28
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Expires: 1977-02-01
Abstract
No abstract record available.
Inventors
- 👤 William M Kraft
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 15:49
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/02; C08G63/12; C08G63/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
THE PROCESS OF PRODUCING ALKYD RESINS COMPRISING THE STEPS OF HEATING A POLYHYDRIC ALCOHOL, A POLYBASIC ACID, AND FROM 20% TO 90% OF THE MONOBASIC ACID COMPONENT OF THE RESIN AT A TEMPERATURE BETWEEN 150*C. AND 290*C. UNTIL THE REACTION PRODUCT HAS AN ACID NUMBER BELOW 20, ADDING TO THE REACTION PRODUCT THE REMAINDER OF THE MONOBASIC ACID COMPONENT OF THE RESIN AS MONOBASIC ACID CONTAINING FROM 4 TO 22 CARBON ATOMS, AND HEATING THE RESULTING MIXTURE AT A TEMPERATURE BETWEEN 190*C. AND 300*C. UNTIL, THE RESULTING ALKYD RESIN HAS AN ACID NUMBER BELOW 15.
Claim 2
Dependent Claim
95 words
THE PROCESS OF PRODUCING ALKYD RESINS COMPRISING THE STEPS OF HEATING A POLYHYDRIC ALCOHOL, A POLYBASIC ACID, AND FROM 20% TO 90% OF THE MONOBASIC ACID COMPONENT OF THE RESIN AT A TEMPERATURE BETWEEN 150*C. AND 290*C. UNTIL THE REACTION PRODUCT HAS AN ACID NUMBER BELOW 20, ADDING TO THE REACTION PRODUCT THE REMAINDER OF THE MONOBASIC ACID COMPONENT OF THE RESIN AS MONOBASIC ACID CONTAINING FROM 4 TO 22 CARBON ATOMS, AND HEATING THE RESULTING MIXTURE AT A TEMPERATURE BETWEEN 190*C. AND 300*C. UNTIL, THE RESULTING ALKYD RESIN HAS AN ACID NUMBER BELOW 15.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-02-28 | 1964-08-29 | 1965-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-02-28 | 1968-08-29 | 1969-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-02-28 | 1972-08-29 | 1973-02-28 | $7700.00 | Window Closed / Lapsed |