Patent US3004943A successfully refreshed from Google Patents.
US3004943A
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US
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Synthetic rubber latex
Assignee: Uniroyal Inc
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Filing: 1958-11-28
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Granted: 1961-10-17
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Expires: 1978-11-28
Abstract
No abstract record available.
Inventors
- 👤 Robert W Brown
- 👤 Victor S Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:17
CPC Classifications
C; C08; C08C; C08C1/00; C08C1/02; C08C1/065; C08C1/07; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S260/00; Y10S260/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 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 WITH BUTADIENES-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 0.05% TO 1% OF POLYVINYL ALCOHOL BASED ON THE WEIGHT OF THE LATEX SOLIDS, SAID POLYVINYL ALCOHOL HAVING A VISCOSITY IN 4% AQUEOUS SOLUTION AT 20*C. FROM 4 TO 70 CENTIPOISES, AND THEREAFTER INCREASING THE PH OF THE LATEX TO WITHIN THE RANGE OF 8 TO 11.
Claim 2
Independent Claim
148 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 WITH BUTADIENES-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 0.05% TO 1% OF POLYVINYL ALCOHOL BASED ON THE WEIGHT OF THE LATEX SOLIDS, SAID POLYVINYL ALCOHOL HAVING A VISCOSITY IN 4% AQUEOUS SOLUTION AT 20*C. FROM 4 TO 70 CENTIPOISES, 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) | 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 |