US2563614A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic resin and method of making
Assignee: —
•
Filing: —
•
Granted: 1951-08-07
•
Expires: 1968-08-07
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:05
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/04; C08G8/08; C08G8/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
THE PROCESS OF PRODUCING AN INITIAL HEATCONVERTIBLE PHENOL-FORMALDEHYDE RESINOUS PRODUCT WHICH COMPRISES ADDING A FREE MONOHYDRIC PHENOL CAPABLE OF REACTING WITH FORMALDEHYDE TO FORM A HEAT-CONVERTIBLE RESIN TO A HOT AQUEOUS SOLUTION OF A SUBSTANCE YIELDING FREE FORMALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, PARAFORMALDEHYDE, AND HEXAMETHYLENETETRAMINE MAINTAINED AT A TEMPERATURE BETWEEN 70* C., AND ITS BOILING POINT, THE AMOUNT OF FORMALDEHYDE BEING SUFFICIENT TO FORM A HEATCONVERTIBLE RESIN, REACTING SAID PHENOL AND THE FORMALDEHYDE IN THE PRESENCE OF A BASIC CATALYST TO FORM A RESINOUS CONDENSATION PRODUCT, AND REMOVING EXCESS WATER FROM SAID PRODUCT.
Claim 2
Dependent Claim
96 words
THE PROCESS OF PRODUCING AN INITIAL HEATCONVERTIBLE PHENOL-FORMALDEHYDE RESINOUS PRODUCT WHICH COMPRISES ADDING A FREE MONOHYDRIC PHENOL CAPABLE OF REACTING WITH FORMALDEHYDE TO FORM A HEAT-CONVERTIBLE RESIN TO A HOT AQUEOUS SOLUTION OF A SUBSTANCE YIELDING FREE FORMALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE, PARAFORMALDEHYDE, AND HEXAMETHYLENETETRAMINE MAINTAINED AT A TEMPERATURE BETWEEN 70* C., AND ITS BOILING POINT, THE AMOUNT OF FORMALDEHYDE BEING SUFFICIENT TO FORM A HEATCONVERTIBLE RESIN, REACTING SAID PHENOL AND THE FORMALDEHYDE IN THE PRESENCE OF A BASIC CATALYST TO FORM A RESINOUS CONDENSATION PRODUCT, AND REMOVING EXCESS WATER FROM SAID PRODUCT.
References Cited (Backward Citations)
US1680408A
Cited
US1632113A
Cited
AU1202128A
Cited
US2053850A
Cited
US2114121A
Cited
US2356466A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-08-06 | 1955-02-05 | 1955-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-08-06 | 1959-02-05 | 1959-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-08-06 | 1963-02-05 | 1963-08-07 | $7700.00 | Window Closed / Lapsed |