Patent US2602076A successfully refreshed from Google Patents.
US2602076A
Expired / Lapsed
US
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Production of oil soluble phenolic resins
Assignee: Dow Chemical Co
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Filing: 1949-08-01
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Granted: 1952-07-01
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Expires: 1969-08-01
Abstract
No abstract record available.
Inventors
- 👤 Arthur S Teot
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:44
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G16/00; C08G16/02; C08G16/0212; C08G8/04; C08G8/08; C08G8/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
119 words
A METHOD OF PRODUCING AN OIL-SOLUBLE PHENOLIC RESIN WHICH COMPRISES (1) PRODUCING A CRUDE ARALKYL PHENOL BY CAUSING CONDENSATION OF (A) 0.7 MOL OF A MONONUCLEAR MONOHYDRIC PHENOL CONTAINING A TOTAL OF NOT MORE THAN TEN CARBON ATOMS, ANY SUBSTITUENT BEING AN ALKYL RADICAL IN A META POSITION, WITH (B) 1.0 MOL OF A 2-ARYL1-ALKENE HAVING FROM EIGHT TO TWELVE CARBON ATOMS IN WHICH THE ARYL SUBSTITUENT IS MONONUCLEAR, HAS FROM SIX TO TEN CARBON ATOMS, AND HAS NOT MORE THAN TWO SUBSTITUENTS, EACH OF WHICH IS AN ALKYL RADICAL, IN THE PRESENCE OF A STRONG MINERAL-ACID CATALYST OF THE GROUP CONSISTING OF HYDROCHLORIC, HYDROBROMIC AND PHOSPHORIC, AND (2) THEREAFTER CAUSING CONDENSATION OF FORMALDEHYDE WITH THE SAID CRUDE PRODUCT.
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) | 1955-07-01 | 1955-12-31 | 1956-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-07-01 | 1959-12-31 | 1960-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-07-01 | 1963-12-31 | 1964-07-01 | $7700.00 | Window Closed / Lapsed |