Patent US3383239A successfully refreshed from Google Patents.
Patent US3603775A successfully refreshed from Google Patents.
Patent US1359162A successfully refreshed from Google Patents.
US2736718A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenolic resin products and their production
Assignee: Saint Gobain Abrasives Inc
•
Filing: 1952-08-02
•
Granted: 1956-02-28
•
Expires: 1972-08-02
Abstract
No abstract record available.
Inventors
- 👤 Charles S Webber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:53
CPC Classifications
C; C08; C08G; C08G8/00; C08G8/28; C09; C09J; C09J161/00; C09J161/04; C09J161/06; C08L; C08L2666/00; C08L2666/28; C08L2666/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
A PROCESS FOR PRODUCING A RAPID-CURING PHENOLIC RESIN ADHESIVE COMPOSITION WHICH COMPRISES: HEATING IN AN AQUEOUS MEDIUM 1 MOL OF A MONOHYDRIC PHENOL WITH BETWEEN 1.5 AND 2.8 MOLS OF AN ALDEHYDE IN THE PRESENCE OF BETWEEN ABOUT 1 AND 4% BY WEIGHT OF SAID PHENOL OF AN ALKALINE CONDENSATION CATALYST UNTIL A FUSIBLE, HEAT-CONVERTIBLE CONDENSATION RESIN HAVING A WATER TOLERANCE NOT GREATER THAN 200 IS FORMED; DISCONTINUING THE HEATING BEFORE THE RESIN MASS GELS; DISTILLING OFF VOLATILE MATERIALS FROM THE RESULTING RESIN SOLUTION UNDER VACUUM TO GIVE AN AQUEOUS SOLUTION OF SAID RESIN OF BETWEEN ABOUT 60 AND 90% SOLIDS BY WEIGHT; AND THEREAFTER ADMIXING WITH SAID RESIN SOLUTION A QUANTITY OF BETWEEN 2 AND 8% BY WEIGHT OF SUCH RESIN OF A PHENOLATE SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, LITHIUM, CALCIUM, BARIUM AND STRONTIUM MONOCYCLIC AND BICYCLIC PHENOLATES.
Claim 2
Dependent Claim
142 words
A PROCESS FOR PRODUCING A RAPID-CURING PHENOLIC RESIN ADHESIVE COMPOSITION WHICH COMPRISES: HEATING IN AN AQUEOUS MEDIUM 1 MOL OF A MONOHYDRIC PHENOL WITH BETWEEN 1.5 AND 2.8 MOLS OF AN ALDEHYDE IN THE PRESENCE OF BETWEEN ABOUT 1 AND 4% BY WEIGHT OF SAID PHENOL OF AN ALKALINE CONDENSATION CATALYST UNTIL A FUSIBLE, HEAT-CONVERTIBLE CONDENSATION RESIN HAVING A WATER TOLERANCE NOT GREATER THAN 200 IS FORMED; DISCONTINUING THE HEATING BEFORE THE RESIN MASS GELS; DISTILLING OFF VOLATILE MATERIALS FROM THE RESULTING RESIN SOLUTION UNDER VACUUM TO GIVE AN AQUEOUS SOLUTION OF SAID RESIN OF BETWEEN ABOUT 60 AND 90% SOLIDS BY WEIGHT; AND THEREAFTER ADMIXING WITH SAID RESIN SOLUTION A QUANTITY OF BETWEEN 2 AND 8% BY WEIGHT OF SUCH RESIN OF A PHENOLATE SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, LITHIUM, CALCIUM, BARIUM AND STRONTIUM MONOCYCLIC AND BICYCLIC PHENOLATES.
References Cited (Backward Citations)
USRE23347E
Cited
GB190902122A
Cited
US1126926A
Cited
US1811808A
Cited
GB305237A
Cited
GB357259A
Cited
US2272155A
Cited
US2401138A
Cited
US2557826A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-02-27 | 1959-08-29 | 1960-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-02-27 | 1963-08-29 | 1964-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-02-27 | 1967-08-29 | 1968-02-28 | $7700.00 | Window Closed / Lapsed |