US3039996A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic resins
Assignee: California Research LLC
•
Filing: 1959-09-02
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Granted: 1962-06-19
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Expires: 1979-09-02
Abstract
No abstract record available.
Inventors
- 👤 Louis L Ferstandig
- 👤 Philip S Magee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:52
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/68; C08G63/685; C08G63/6854
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
121 words
PROCESS FOR THE OF A RESINOUS COMPOSITION WHICH COMPRISES HEATING AT A TEMPERATURE IN THE RANGE 190*C. TO 300*C. APPROXIMATELY AQUIMOLAR PROPORTION OF A LOWER ALIPHATIC GLYCOL AND A KETOPIMELIC ACID SELECTED FROM THE GROUP CONSISTING OF 2-KETOPIMELIC ACID AND 4KETOPIMELIC ACID UNTIL THERE IS PRODUCED A FLUID POLYESTER MIXTURE CONTAINING KETOP GROUPS AND HAVING AN ACID NUMBER IN THE RANGE 100 TO 145, AND THEN HEATING THE SAID POLYESTER MIXTURE AT A TEMPERATURE IN THE RANGE 100*C. TO 250*C. WITH 0.05 TO 0.5 MOL PER KETO GROUP OF AN AMINE CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF DIETHYLENE TRIAMINE, META-XYLYLENDAIAMINE, AND METAPHENYLENE DIAMINE TO CROSS-LINK THE KETO GROUPS OF THE POLYESTER, THEREBY TO PRODUCE A TOUGH, SOLID THERMOSETTING RESIN.
Claim 2
Dependent Claim
121 words
PROCESS FOR THE OF A RESINOUS COMPOSITION WHICH COMPRISES HEATING AT A TEMPERATURE IN THE RANGE 190*C. TO 300*C. APPROXIMATELY AQUIMOLAR PROPORTION OF A LOWER ALIPHATIC GLYCOL AND A KETOPIMELIC ACID SELECTED FROM THE GROUP CONSISTING OF 2-KETOPIMELIC ACID AND 4KETOPIMELIC ACID UNTIL THERE IS PRODUCED A FLUID POLYESTER MIXTURE CONTAINING KETOP GROUPS AND HAVING AN ACID NUMBER IN THE RANGE 100 TO 145, AND THEN HEATING THE SAID POLYESTER MIXTURE AT A TEMPERATURE IN THE RANGE 100*C. TO 250*C. WITH 0.05 TO 0.5 MOL PER KETO GROUP OF AN AMINE CROSS-LINKING AGENT SELECTED FROM THE GROUP CONSISTING OF DIETHYLENE TRIAMINE, META-XYLYLENDAIAMINE, AND METAPHENYLENE DIAMINE TO CROSS-LINK THE KETO GROUPS OF THE POLYESTER, THEREBY TO PRODUCE A TOUGH, SOLID THERMOSETTING RESIN.
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) | 1965-06-18 | 1965-12-18 | 1966-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-06-18 | 1969-12-18 | 1970-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-06-18 | 1973-12-18 | 1974-06-19 | $7700.00 | Window Closed / Lapsed |