Patent US2743253A successfully refreshed from Google Patents.
US2743253A
Expired / Lapsed
US
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Oxyalkylated amine-modified thermoplastic phenol-aldehyde resins, and method of making same
Assignee: Baker Petrolite LLC
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Filing: 1952-07-30
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Granted: 1956-04-24
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Expires: 1972-07-30
Abstract
No abstract record available.
Inventors
- 👤 Groote Melvin De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:49
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C08G14/00; C08G14/02; C08G14/04; C08G14/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
THE PROCESS OF FIRST CONDESNING (A) AN OXYALKYLATIONSUSCEPTIBLE, FUSIBLE, NON-OXYGENATED ORGANIC SOLVENT-SOLUBLE, WATER-INSOLUBLE, LOW-STAGE PHENOLALDEHYDE RESIN HAVING AN AVERAGE MOLECULAR WEIGHT CORRESPONDING TO AT LEAST 3 AND NOT OVER 6 PHENOLIC NUCLEI PER RESIN MOLECULE; SAID RESIN BEING DIFUNCTIONAL ONLY IN REGARD TO METHYLOLFORMING REACTIVITY; SAID RESIN BEING DERIVED BY REACTION BETWEEN A DIFUNCTIONAL MONOHYDRIC PHENOL AND AN ALDEHYDE HAVING NOT OVER 8 CARBON ATOMS AND REACTIVE TOWARD SAID PHENOL; SAID RESIN BEING FORMED IN THE SUBSTANTIAL ABSENCE OF PHENOLS OF FUNCTIONALITY GREATER THAN 2; SAID PHENOL BEING OF THE FORMULA
Claim 2
Dependent Claim
91 words
THE PROCESS OF FIRST CONDESNING (A) AN OXYALKYLATIONSUSCEPTIBLE, FUSIBLE, NON-OXYGENATED ORGANIC SOLVENT-SOLUBLE, WATER-INSOLUBLE, LOW-STAGE PHENOLALDEHYDE RESIN HAVING AN AVERAGE MOLECULAR WEIGHT CORRESPONDING TO AT LEAST 3 AND NOT OVER 6 PHENOLIC NUCLEI PER RESIN MOLECULE; SAID RESIN BEING DIFUNCTIONAL ONLY IN REGARD TO METHYLOLFORMING REACTIVITY; SAID RESIN BEING DERIVED BY REACTION BETWEEN A DIFUNCTIONAL MONOHYDRIC PHENOL AND AN ALDEHYDE HAVING NOT OVER 8 CARBON ATOMS AND REACTIVE TOWARD SAID PHENOL; SAID RESIN BEING FORMED IN THE SUBSTANTIAL ABSENCE OF PHENOLS OF FUNCTIONALITY GREATER THAN 2; SAID PHENOL BEING OF THE FORMULA
References Cited (Backward Citations)
US2031557A
Cited
US2499368A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-24 | 1959-10-24 | 1960-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-24 | 1963-10-24 | 1964-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-24 | 1967-10-24 | 1968-04-24 | $7700.00 | Window Closed / Lapsed |