US2965601A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Brittle furfurylated phenolic resins and method of making same
Assignee: Quaker Oats Co
•
Filing: 1958-06-13
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Granted: 1960-12-20
•
Expires: 1978-06-13
Abstract
No abstract record available.
Inventors
- 👤 Lloyd H Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:47
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
95 words
A PROCESS FOR PRODUCING A BRITTLE, FUSIBLE, FURFURYLATED-NOVOLAK RESIN COMPRISING PREPARING A SUSPENSION OF A MONOHYDRIC PHENOL-ALDEHYDE NOVOLAK RESIN AND WATER? REDUCING THE ACIDITY OF SAID SUSPENSION WITH AN ALKALINE REAGENT TO A TOTAL AMOUNT OF HYDROGEN IONS EQUIVALENT TO A PH IN THE RANGE OF ABOUT 2.4 TO ABOUT 3.2 WHERE SAID SUSPENSION CONTAINS ABOUT 35% WATER? DEHYDRATING THE NOVOLAK AND WATER SUSPENSION? AND CONDENSING THE DEHYDRATED NOVOLAK WITH FURFURLY ALCOHOL AT A REFLUXING TEMPERATURE, EMPLOYING BETWEEN 0.5 AND 1.5 MOLES OF THE ALCOHOL TO EACH MOLE OF THE DEHYDRATED NOVOLAK CALCULATED AS PHENOL.
Claim 2
Dependent Claim
95 words
A PROCESS FOR PRODUCING A BRITTLE, FUSIBLE, FURFURYLATED-NOVOLAK RESIN COMPRISING PREPARING A SUSPENSION OF A MONOHYDRIC PHENOL-ALDEHYDE NOVOLAK RESIN AND WATER? REDUCING THE ACIDITY OF SAID SUSPENSION WITH AN ALKALINE REAGENT TO A TOTAL AMOUNT OF HYDROGEN IONS EQUIVALENT TO A PH IN THE RANGE OF ABOUT 2.4 TO ABOUT 3.2 WHERE SAID SUSPENSION CONTAINS ABOUT 35% WATER? DEHYDRATING THE NOVOLAK AND WATER SUSPENSION? AND CONDENSING THE DEHYDRATED NOVOLAK WITH FURFURLY ALCOHOL AT A REFLUXING TEMPERATURE, EMPLOYING BETWEEN 0.5 AND 1.5 MOLES OF THE ALCOHOL TO EACH MOLE OF THE DEHYDRATED NOVOLAK CALCULATED AS PHENOL.
Claim 3
Dependent Claim
92 words
A BRITTLE, FUSIBLE, FURFURYLATED-NOVOLAK RESIN OBTAINED BY PREPARING A SUSPENSION OF A MONOHYDRIC PHENOLALDEHYDE NOVOLAK RESIN AND WATER? REDUCING THE ACIDITY OF SAID SUSPENSION WITH AN ALKALINE REAGENT TO A TOTAL AMOUNT OF HYDROGEN IONS EQUIVALENT TO A PH IN THE RANGE OF ABOUT 2.4 TO ABOUT 3.2 WHERE SAID SUSPENSION CONTAINS ABOUT 35% WATER? DEHYDRATING THE NOVOLAK AND WATER SUSPENSION? AND CONDENSING THE DEHYDRATED NOVOLAK WITH FURFURYL ALCOHOL AT A REFLUXING TEMPERATURE, EMPLOYING BETWEEN 0.5 AND 1.5 MOLES OF THE ALCOHOL TO EACH MOLE OF THE DEHYDRATED NOVOLAK CALCULATED AS PHENOL.
Claim 4
Dependent Claim
92 words
A BRITTLE, FUSIBLE, FURFURYLATED-NOVOLAK RESIN OBTAINED BY PREPARING A SUSPENSION OF A MONOHYDRIC PHENOLALDEHYDE NOVOLAK RESIN AND WATER? REDUCING THE ACIDITY OF SAID SUSPENSION WITH AN ALKALINE REAGENT TO A TOTAL AMOUNT OF HYDROGEN IONS EQUIVALENT TO A PH IN THE RANGE OF ABOUT 2.4 TO ABOUT 3.2 WHERE SAID SUSPENSION CONTAINS ABOUT 35% WATER? DEHYDRATING THE NOVOLAK AND WATER SUSPENSION? AND CONDENSING THE DEHYDRATED NOVOLAK WITH FURFURYL ALCOHOL AT A REFLUXING TEMPERATURE, EMPLOYING BETWEEN 0.5 AND 1.5 MOLES OF THE ALCOHOL TO EACH MOLE OF THE DEHYDRATED NOVOLAK CALCULATED AS PHENOL.
References Cited (Backward Citations)
US2471631A
Cited
US2470440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |