US2820773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing rubber-and-resin compositions
Assignee: Uniroyal Inc
•
Filing: 1955-08-01
•
Granted: 1958-01-21
•
Expires: 1975-08-01
Abstract
No abstract record available.
Inventors
- 👤 Clifford W Childers
- 👤 Charles F Fisk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:16
CPC Classifications
C; C08; C08F; C08F279/00; C08F279/02; C08F279/04; C08L; C08L9/00; C08L25/00; C08L25/02; C08L25/04; C08L25/08; C08L25/12; C08L33/00; C08L33/18; C08L33/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
THE METHOD OF PREPARING A RUBBER-AND-RESIN PRODUCT HAVING AN IMPACT STRENGTH AT -40*C. OF OVER 1 FOOTPOUND PER INCH OF IZOD NOTCH WHICH COMPRISES POLYMERIZING IN A LATEX OF A SYNTHETIC RUBBER CONTAINING NOT LESS THAN 95% OF POLYMERIZED BUTADIENE-1,3 AND NOT MORE THAN 5% OF STYRENE COPOLYMERIZED THEREWITH, A MIXTURE MIXTURE BEING 25% TO 90% OF STYRENE AND THE ACRYLONITRILE CONTENT BEING CORRESPONDINGLY 75% TO 10%, MAINTAINING THE AMOUNT OF DISPERSING AGENT IN THE LATEX AT NOT MORE THAN 5 PARTS PER 100 PARTS OF SYNTHETIC RUBBER AND POLYMERIZED STYRENE-ACRYLONITRILE CONTAINED THEREIN UNTIL AT LEAST ONE-HALF OF THE STYRENE AND ACRYLONITRILE MONOMER MIXTURE TO BE POLYMERIZED IN ADMIXTURE WITH THE SYNTHETIC RUBBER HAS BEEN CONVERTED TO POLYMER, THE AMOUNT OF SAID RESIN BEING POLYMERIZED IN THE RUBBER LATEX BEING IN THE RANGE FROM ONE-THIRD TO FOUR PARTS OF RESIN PER PART OF SYNTHETIC RUBER, AND SEPARATING THE THUS FORMED RUBBER-RESIN PRODUCT FROM THE AQUEOUS MEDIUM, SAID DISPERSING AGENT BEING ALKALI-METAL SOAP.
Claim 2
Independent Claim
162 words
THE METHOD OF PREPARING A RUBBER-AND-RESIN PRODUCT HAVING AN IMPACT STRENGTH AT -40*C. OF OVER 1 FOOTPOUND PER INCH OF IZOD NOTCH WHICH COMPRISES POLYMERIZING IN A LATEX OF A SYNTHETIC RUBBER CONTAINING NOT LESS THAN 95% OF POLYMERIZED BUTADIENE-1,3 AND NOT MORE THAN 5% OF STYRENE COPOLYMERIZED THEREWITH, A MIXTURE MIXTURE BEING 25% TO 90% OF STYRENE AND THE ACRYLONITRILE CONTENT BEING CORRESPONDINGLY 75% TO 10%, MAINTAINING THE AMOUNT OF DISPERSING AGENT IN THE LATEX AT NOT MORE THAN 5 PARTS PER 100 PARTS OF SYNTHETIC RUBBER AND POLYMERIZED STYRENE-ACRYLONITRILE CONTAINED THEREIN UNTIL AT LEAST ONE-HALF OF THE STYRENE AND ACRYLONITRILE MONOMER MIXTURE TO BE POLYMERIZED IN ADMIXTURE WITH THE SYNTHETIC RUBBER HAS BEEN CONVERTED TO POLYMER, THE AMOUNT OF SAID RESIN BEING POLYMERIZED IN THE RUBBER LATEX BEING IN THE RANGE FROM ONE-THIRD TO FOUR PARTS OF RESIN PER PART OF SYNTHETIC RUBER, AND SEPARATING THE THUS FORMED RUBBER-RESIN PRODUCT FROM THE AQUEOUS MEDIUM, SAID DISPERSING AGENT BEING ALKALI-METAL SOAP.
References Cited (Backward Citations)
GB649166A
Cited
US2700185A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-01-20 | 1961-07-22 | 1962-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-01-20 | 1965-07-22 | 1966-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-01-20 | 1969-07-22 | 1970-01-21 | $7700.00 | Window Closed / Lapsed |