US2819302A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic drying oils
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-06-25
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Granted: 1958-01-07
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Expires: 1974-06-25
Abstract
No abstract record available.
Inventors
- 👤 Donald F Koenecke
- 👤 Louis A Mikeska
- 👤 Anthony H Gleason
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:39
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/30; C08C19/34; C08C19/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
A PROCESS FOR IMPROVING THE HARDNESS OF THE FILMS OF POLYMERIC DRYING OILS PREPARED BY POLYMERIZATION OF 60 TO 100 PARTS OF A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS AND 40 TO 0 PARTS OF STYRENE IN THE PRESENCE OF METALLIC SODIUM WHICH COMPRISES FIRST REACTING THE OIL AT A TEMPERATURE BETWEEN 50* AND 250*C. WITH MALEIC ANHYDRIDE AND THEN REACTING THE RESULTING PRODUCT WITH ABOUT 0.1 TO 1 MOLE, PER MOLE OF AVAILABLE CARBOXYL GROUPS, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-AMINO-2METHYL PROPANE DIOL-1,3 AND 2-AMINO-2-(HYDROXYMETHYL) PROPANE DIOL-1,3.
Claim 2
Dependent Claim
94 words
A PROCESS FOR IMPROVING THE HARDNESS OF THE FILMS OF POLYMERIC DRYING OILS PREPARED BY POLYMERIZATION OF 60 TO 100 PARTS OF A CONJUGATED DIOLEFIN OF 4 TO 6 CARBON ATOMS AND 40 TO 0 PARTS OF STYRENE IN THE PRESENCE OF METALLIC SODIUM WHICH COMPRISES FIRST REACTING THE OIL AT A TEMPERATURE BETWEEN 50* AND 250*C. WITH MALEIC ANHYDRIDE AND THEN REACTING THE RESULTING PRODUCT WITH ABOUT 0.1 TO 1 MOLE, PER MOLE OF AVAILABLE CARBOXYL GROUPS, OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 2-AMINO-2METHYL PROPANE DIOL-1,3 AND 2-AMINO-2-(HYDROXYMETHYL) PROPANE DIOL-1,3.
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) | 1961-01-06 | 1961-07-08 | 1962-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-06 | 1965-07-08 | 1966-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-06 | 1969-07-08 | 1970-01-07 | $7700.00 | Window Closed / Lapsed |