US3004936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Butadiene copolymer rubber-silica-protein masterbatch and process of preparation
Assignee: Uniroyal Inc
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Filing: 1958-08-29
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Granted: 1961-10-17
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Expires: 1978-08-29
Abstract
No abstract record available.
Inventors
- 👤 Louis H Howland
- 👤 Woodrow W White
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:16
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS EHICH COMPROSES INCORPORATING AN ALKALIMETAL SILICATE AND A PROTEIN SELECTED FROM THE GROUP CONSISTING OF GLUE, GELATIN AND CASEIN IN AN ALKALINE HATEX OF A RUBBER COPOLYMER OF A BUTADIENE-1,3 WITH AN UNSATURATED COMPOUND CONTAINING A POLAR GROUP SELECTED FROM THE CLASS CONSISTING OF AMINO, CARBONYL, CARBONITRILE AND CHLOROARYL GROUPS, AND COAGULATING SAID RUBBER AND FORMING A MASTERBATCH THEREWITH OF COPRECIPITATED SILICA IN THE FORM OF FILTERABLE CRUMBS BY MIXING AN ACID WITH SUCH LATEX CONTAINING THE ALKALI-METAL SILICATE AND PROTEIN TO PRODUCE A PH OF LESS THAN 7 IN THE AQUEOUS MEDIUM OF THE COAGULATED SYNTHETIC RUBBER AND COPRECIPITATED SILICA AT THE COMPLETION OF THE COAGULATION OF THE MASTERBATCH.
Claim 2
Dependent Claim
112 words
A PROCESS EHICH COMPROSES INCORPORATING AN ALKALIMETAL SILICATE AND A PROTEIN SELECTED FROM THE GROUP CONSISTING OF GLUE, GELATIN AND CASEIN IN AN ALKALINE HATEX OF A RUBBER COPOLYMER OF A BUTADIENE-1,3 WITH AN UNSATURATED COMPOUND CONTAINING A POLAR GROUP SELECTED FROM THE CLASS CONSISTING OF AMINO, CARBONYL, CARBONITRILE AND CHLOROARYL GROUPS, AND COAGULATING SAID RUBBER AND FORMING A MASTERBATCH THEREWITH OF COPRECIPITATED SILICA IN THE FORM OF FILTERABLE CRUMBS BY MIXING AN ACID WITH SUCH LATEX CONTAINING THE ALKALI-METAL SILICATE AND PROTEIN TO PRODUCE A PH OF LESS THAN 7 IN THE AQUEOUS MEDIUM OF THE COAGULATED SYNTHETIC RUBBER AND COPRECIPITATED SILICA AT THE COMPLETION OF THE COAGULATION OF THE MASTERBATCH.
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) | 1964-10-16 | 1965-04-17 | 1965-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-16 | 1969-04-17 | 1969-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-16 | 1973-04-17 | 1973-10-17 | $7700.00 | Window Closed / Lapsed |