US2584341A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of reacting an organosilane, glycerine, and glycerine-dicarboxylic acid ester
Assignee: Dow Silicones Corp
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Filing: 1950-01-07
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Granted: 1952-02-05
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Expires: 1970-01-07
Abstract
No abstract record available.
Inventors
- 👤 Jr John T Goodwin
- 👤 Melvin J Hunter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:38
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/60
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
THE METHOD OF PREPARING THERMOSETTING RESINOUS MATERIALS WHICH COMPRISES REACTING A SILANE OF THE FORMULA RNSIX4-N, WHERE R IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF SATURATED DALIPHATC RADICALS OF LESS THAN SEVEN CARBON ATOMS AND MONOCYCLIC ARYL RADICALS, X IS SLEECTED FROM THE GROUP CONSISTING OF ALKOXY, ACYLOXY AND CHLORINE SAID ACYLOXY RAIDCALS BEING OF THE FORMULA RCOO-, WHERE R IS A HYDROCARBON RADICAL, AND N HAS A VALUE FROM 0.9 TO 2.1, WITH GLYCERINE IN AMOUNT SUCH THAT THE RATIO OF SILANE X RADICALS TO GLYCERINE OH IS FROM 0.25:1 TO 0.9:1 AND THEN REACTING THE SILANE-GLYCERINE ESTER FORMED BY REACTING AN ALCOHOL-SOLUBLE ACID ESTER FORMED BY REACTING GLYCERINE WITH AN ACIDIC COMPOUND SELECTED FROM THE THE GROUP CONSISTING OF DICARBOXYLIC ACIDS AND ANHYDRIDES THEREOF, THE GLYCERINE AND ACIDIC COMPOUND BEING REACTED IN AMOUNT SUCH THAT THE MOLAR RAIO BEING OF ACIDIC COMPOUND TO GLYCERINE IS FROM 1,33:1 TO 2:1, SAID SILANE-GLTCERINE ESTER AND SAID ACID ESTER BEING REACTED IN AMOUNT SUCH THAT THE RATIO OF TOTAL GLYCERINE OH TO THE TOTAL DICARBOXYLIC ACID CARBOXYL GROUPS I S FROM 1,25:1 TO 2.8:1.
Claim 2
Independent Claim
187 words
THE METHOD OF PREPARING THERMOSETTING RESINOUS MATERIALS WHICH COMPRISES REACTING A SILANE OF THE FORMULA RNSIX4-N, WHERE R IS A MONOVALENT HYDROCARBON RADICAL SELECTED FROM THE GROUP CONSISTING OF SATURATED DALIPHATC RADICALS OF LESS THAN SEVEN CARBON ATOMS AND MONOCYCLIC ARYL RADICALS, X IS SLEECTED FROM THE GROUP CONSISTING OF ALKOXY, ACYLOXY AND CHLORINE SAID ACYLOXY RAIDCALS BEING OF THE FORMULA RCOO-, WHERE R IS A HYDROCARBON RADICAL, AND N HAS A VALUE FROM 0.9 TO 2.1, WITH GLYCERINE IN AMOUNT SUCH THAT THE RATIO OF SILANE X RADICALS TO GLYCERINE OH IS FROM 0.25:1 TO 0.9:1 AND THEN REACTING THE SILANE-GLYCERINE ESTER FORMED BY REACTING AN ALCOHOL-SOLUBLE ACID ESTER FORMED BY REACTING GLYCERINE WITH AN ACIDIC COMPOUND SELECTED FROM THE THE GROUP CONSISTING OF DICARBOXYLIC ACIDS AND ANHYDRIDES THEREOF, THE GLYCERINE AND ACIDIC COMPOUND BEING REACTED IN AMOUNT SUCH THAT THE MOLAR RAIO BEING OF ACIDIC COMPOUND TO GLYCERINE IS FROM 1,33:1 TO 2:1, SAID SILANE-GLTCERINE ESTER AND SAID ACID ESTER BEING REACTED IN AMOUNT SUCH THAT THE RATIO OF TOTAL GLYCERINE OH TO THE TOTAL DICARBOXYLIC ACID CARBOXYL GROUPS I S FROM 1,25:1 TO 2.8:1.
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) | 1955-02-04 | 1955-08-06 | 1956-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-04 | 1959-08-06 | 1960-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-04 | 1963-08-06 | 1964-02-05 | $7700.00 | Window Closed / Lapsed |