Patent US3228899A successfully refreshed from Google Patents.
US3228899A
Expired / Lapsed
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Phenolic resins from styrene, phenol and a vegetable drying oil
Assignee: Monsanto Co
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Filing: 1961-07-10
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Granted: 1966-01-11
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Expires: 1981-07-10
Abstract
No abstract record available.
Inventors
- 👤 Elmer Curtis
- 👤 Jerome J Mestdagh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:39
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
A PROCESS WHICH COMPRISES (1) REACTING 100 PARTS BY WEIGHT F A PHENOL WITH 5-70 PARTS BY WEIGHT OF STRYENE AT 25-145*C. UNDER ACIDIC CONDITIONS, (2) REACTING THE PRODUCT OF STEP (1) WITH 10-150 PARTS BY WEIGHT OF A VEGETABLE DRYING OIL AT 150-180*C. UNDER ACIDIC CONDITIONS, AND (3) REACTING THE PRODUCT OF STEP (2) WITH ABOUT 15-55 PARTS BY WEIGHT OF AN ALDEHYDE AT 70-100*C. UNDER BASIC CONDITIONS TO A DRY RUBER ENDPOINT OF 2-60 SECONDS AT 200*C.
Claim 2
Dependent Claim
79 words
A PROCESS WHICH COMPRISES (1) REACTING 100 PARTS BY WEIGHT F A PHENOL WITH 5-70 PARTS BY WEIGHT OF STRYENE AT 25-145*C. UNDER ACIDIC CONDITIONS, (2) REACTING THE PRODUCT OF STEP (1) WITH 10-150 PARTS BY WEIGHT OF A VEGETABLE DRYING OIL AT 150-180*C. UNDER ACIDIC CONDITIONS, AND (3) REACTING THE PRODUCT OF STEP (2) WITH ABOUT 15-55 PARTS BY WEIGHT OF AN ALDEHYDE AT 70-100*C. UNDER BASIC CONDITIONS TO A DRY RUBER ENDPOINT OF 2-60 SECONDS AT 200*C.
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) | 1969-01-10 | 1969-07-12 | 1970-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-10 | 1973-07-12 | 1974-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-10 | 1977-07-12 | 1978-01-11 | $7700.00 | Window Closed / Lapsed |