US3049500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of increasing the particle size of synthetic latex comprising adding polyvinyl methyl ether to a latex containing salt electrolyte
Assignee: Uniroyal Inc
•
Filing: 1960-01-28
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Granted: 1962-08-14
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Expires: 1980-01-28
Abstract
No abstract record available.
Inventors
- 👤 Louis H Howland
- 👤 Victor S Chambers
- 👤 Edmund J Aleksa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:34
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/02; C08C1/065; C08C1/07; Y; Y10; Y10S; Y10S260/00; Y10S260/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF INCREASING THE SIZE OF THE DISPERSED POLYMER PARTICLES IN A SYNTHETIC RUBBER LATEX AQUEOUS EMULSION POLYMERIZATE OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE-1,3 AND MIXTURES OF BUTADIENES1,3 WITH UP TO 70% BY WEIGHT OF SUCH MIXTURES OF MONOETHYLENIC COMPOUNDS WHICH CONTAIN S CH2=C< GROUP ARE COPOLYMERIZABLE WITH BUTADIENES 1,3 WHICH COMPRISES INCORPORATING IN THE LATEX UP TO 1% OF POLYVINYL METHYL ETHER HAVING A SPECIFIC VISCOSITY FROM 0.015 TO 1.1 AND 0.2% TO 2% OF AN ALKALI SALT ELECTROYTE SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, AMMOMIUM AND AMINE SALTS, SAID PERCENTAGES BEING BASED ON THE SOLIDS OF THE LATEX.
Claim 2
Independent Claim
106 words
THE METHOD OF INCREASING THE SIZE OF THE DISPERSED POLYMER PARTICLES IN A SYNTHETIC RUBBER LATEX AQUEOUS EMULSION POLYMERIZATE OF MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE-1,3 AND MIXTURES OF BUTADIENES1,3 WITH UP TO 70% BY WEIGHT OF SUCH MIXTURES OF MONOETHYLENIC COMPOUNDS WHICH CONTAIN S CH2=C< GROUP ARE COPOLYMERIZABLE WITH BUTADIENES 1,3 WHICH COMPRISES INCORPORATING IN THE LATEX UP TO 1% OF POLYVINYL METHYL ETHER HAVING A SPECIFIC VISCOSITY FROM 0.015 TO 1.1 AND 0.2% TO 2% OF AN ALKALI SALT ELECTROYTE SELECTED FROM THE GROUP CONSISTING OF SODIUM, POTASSIUM, AMMOMIUM AND AMINE SALTS, SAID PERCENTAGES BEING BASED ON THE SOLIDS OF THE LATEX.
References Cited (Backward Citations)
US2138073A
Cited
US2444801A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |