US3049501A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Increasing the particle size of synthetic rubber altex by lowering and raising the ph in the presence of polyvinylmethyl ether
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
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:54
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
145 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 BUTADIENES-1,3 AND MIXTURES OF BUTADIENES1,3 WITH UP TO 70% BY WEIGHT OF SUCH MIXTURES OF MONOETHYLENIC COMPOUNDS WHICH CONTAIN A CH2=C< GROUP AND ARE COPOLYMERIZABLE WWITH BUTADIENE 1,3 CONTAINING 2 TO 10 PARTS OF A WATER-SOLUBLE SOAP OF SOAP-FORMING MONOCARBOXYLIC ACID PER 100 PARTS OF LATEX SOLIDS AND HAVING A PH FROM 8 TO 11 WHICH COMPRISES REDUCING THE PH OF THE LATEX TO WITHIN THE RANGE OF 5.5 TO 7.5 IN THE PRESENCE OF 0.001% TO 1% OF POLYVINYL METHYL ETHER BASED ON THE WEIGHT OF THE LATEX SOLIDS, SAID POLYVINYL METHYL ETHER HAVING A SPECIFIC VISCOSITY FROM 0.015 TO 1.1 AND THEREAFTER INCREASING THE PH OF THE LATEX TO WITHIN THE RANGE OF 8 TO 11.
Claim 2
Independent Claim
145 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 BUTADIENES-1,3 AND MIXTURES OF BUTADIENES1,3 WITH UP TO 70% BY WEIGHT OF SUCH MIXTURES OF MONOETHYLENIC COMPOUNDS WHICH CONTAIN A CH2=C< GROUP AND ARE COPOLYMERIZABLE WWITH BUTADIENE 1,3 CONTAINING 2 TO 10 PARTS OF A WATER-SOLUBLE SOAP OF SOAP-FORMING MONOCARBOXYLIC ACID PER 100 PARTS OF LATEX SOLIDS AND HAVING A PH FROM 8 TO 11 WHICH COMPRISES REDUCING THE PH OF THE LATEX TO WITHIN THE RANGE OF 5.5 TO 7.5 IN THE PRESENCE OF 0.001% TO 1% OF POLYVINYL METHYL ETHER BASED ON THE WEIGHT OF THE LATEX SOLIDS, SAID POLYVINYL METHYL ETHER HAVING A SPECIFIC VISCOSITY FROM 0.015 TO 1.1 AND THEREAFTER INCREASING THE PH OF THE LATEX TO WITHIN THE RANGE OF 8 TO 11.
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) | 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 |