Patent US2748101A successfully refreshed from Google Patents.
US2748101A
Expired / Lapsed
US
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Water-soluble phenol-formaldehyde condensation products
Assignee: Union Carbide Corp
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Filing: 1952-12-24
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Granted: 1956-05-29
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Expires: 1972-12-24
Abstract
No abstract record available.
Inventors
- 👤 Harold M Shappell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:01
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
AN ALKALINE-CATALYZED, WATER-SOLUBLE, HEAT-HARDENABLE CONDENSATE OF ONE MOL PHENOL AND BETWEEN 1,1 AND 3.0 MOLS FORMALDEHYDE REACTED AT A REACTION PH BETWEEN 8.4 AND 11.5 IN THE PRESENCE OF AN INORGANIC ALKALINE CATALYST WHICH DOES NOT FORM WATER-INSOLUBLE PRODUCTS WITH BORIC ACID TO FORM A REACTION PRODUCT HAVING A WATERMISCIBILITY VALUE NOT LESS THAN 500 PER CENT AND NEUTRALIZED WITH BORIC ACID TO A PH VALUE BETWEEN 7.0 AND 8.0, SAID BORIC ACID NEUTRALIZED CONDENSATE HAVING A WATERMISCIBILITY VALUE NOT LESS THAN 500 PER CENT.
Claim 2
Dependent Claim
85 words
AN ALKALINE-CATALYZED, WATER-SOLUBLE, HEAT-HARDENABLE CONDENSATE OF ONE MOL PHENOL AND BETWEEN 1,1 AND 3.0 MOLS FORMALDEHYDE REACTED AT A REACTION PH BETWEEN 8.4 AND 11.5 IN THE PRESENCE OF AN INORGANIC ALKALINE CATALYST WHICH DOES NOT FORM WATER-INSOLUBLE PRODUCTS WITH BORIC ACID TO FORM A REACTION PRODUCT HAVING A WATERMISCIBILITY VALUE NOT LESS THAN 500 PER CENT AND NEUTRALIZED WITH BORIC ACID TO A PH VALUE BETWEEN 7.0 AND 8.0, SAID BORIC ACID NEUTRALIZED CONDENSATE HAVING A WATERMISCIBILITY VALUE NOT LESS THAN 500 PER CENT.
References Cited (Backward Citations)
US1678107A
Cited
US2190672A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-29 | 1959-11-28 | 1960-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-29 | 1963-11-28 | 1964-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-29 | 1967-11-28 | 1968-05-29 | $7700.00 | Window Closed / Lapsed |