Patent US3106550A successfully refreshed from Google Patents.
US3106550A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High softening point maleic modified tall oil rosin glycerol esters
Assignee: Union Bag and Paper Corp
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Filing: 1959-08-27
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Granted: 1963-10-08
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Expires: 1979-08-27
Abstract
No abstract record available.
Inventors
- 👤 Russell D Bitting
- 👤 David A Berry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:34
CPC Classifications
C; C09; C09F; C09F1/00; C09F1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
184 words
A METHOD FOR PREPARING POLYHYDRIC ALCOHOL ESTERS OF MALEIC DIELS-ALDER ADDUCTS OF TALL OIL ROSIN COMPRISING ESTERIFYING FROM ABOUT 1.5 TO 2.6 MOLS OF A POLYHYDRIC ALCOHOL PER MOL OF A BUTENEDIOIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE AND MALEIC ACID TO FORM THE CORRESPONDING BUTENEDIOIC ESTER, SAID POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, PENTAERYTHRITOL, TRIMETHYLOLETHANE, TRIMETHYLOL PROPANE, TRIMETHYLOL BUTANE, DIPENTAERYTHRITOL AND MIXTURES OF THESE, REACTING SAID BUTENEDIOIC ESTER WITH SAID TALL OIL ROSIN IN AN AMOUNT OF ESTER CONTAINING FROM ABOUT THREE PARTS TO ABOUT FIFTEEN PARTS OF BUTENEDIOIC COMPONENT EXPRESSED AS MALEIC ANHYDRIDE PER 100 PARTS OF ROSIN, IN THE PRESENCE OF INORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID AND SULFURIC ACID TO FORM THE ROSIN ADDUCT, THE AMOUNT OF SAID ACID BEING FROM ABOUT 0.5 TO 2.0 MILLILITERS OF ACID PER 1000 GRAMS OF FINAL ESTER PRODUCT, SAID ESTER AND SAID TALL OIL ROSIN BEING REACTED AT A TEMPERATURE OF ABOUT 425 TO 550*F. FOR A PERIOD OF TIME TO FORM A ROSIN ADDUCT HAVING AN ACID NUMBER OF LESS THAN 20.
Claim 2
Independent Claim
184 words
A METHOD FOR PREPARING POLYHYDRIC ALCOHOL ESTERS OF MALEIC DIELS-ALDER ADDUCTS OF TALL OIL ROSIN COMPRISING ESTERIFYING FROM ABOUT 1.5 TO 2.6 MOLS OF A POLYHYDRIC ALCOHOL PER MOL OF A BUTENEDIOIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF MALEIC ANHYDRIDE AND MALEIC ACID TO FORM THE CORRESPONDING BUTENEDIOIC ESTER, SAID POLYHYDRIC ALCOHOL SELECTED FROM THE GROUP CONSISTING OF GLYCEROL, PENTAERYTHRITOL, TRIMETHYLOLETHANE, TRIMETHYLOL PROPANE, TRIMETHYLOL BUTANE, DIPENTAERYTHRITOL AND MIXTURES OF THESE, REACTING SAID BUTENEDIOIC ESTER WITH SAID TALL OIL ROSIN IN AN AMOUNT OF ESTER CONTAINING FROM ABOUT THREE PARTS TO ABOUT FIFTEEN PARTS OF BUTENEDIOIC COMPONENT EXPRESSED AS MALEIC ANHYDRIDE PER 100 PARTS OF ROSIN, IN THE PRESENCE OF INORGANIC ACID SELECTED FROM THE GROUP CONSISTING OF PHOSPHORIC ACID AND SULFURIC ACID TO FORM THE ROSIN ADDUCT, THE AMOUNT OF SAID ACID BEING FROM ABOUT 0.5 TO 2.0 MILLILITERS OF ACID PER 1000 GRAMS OF FINAL ESTER PRODUCT, SAID ESTER AND SAID TALL OIL ROSIN BEING REACTED AT A TEMPERATURE OF ABOUT 425 TO 550*F. FOR A PERIOD OF TIME TO FORM A ROSIN ADDUCT HAVING AN ACID NUMBER OF LESS THAN 20.
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) | 1966-10-07 | 1967-04-08 | 1967-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-10-07 | 1971-04-08 | 1971-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-10-07 | 1975-04-08 | 1975-10-08 | $7700.00 | Window Closed / Lapsed |