US3049502A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of increasing the particle size of synthetic latex by adding polyvinyl methyl ether to a latex containing salt electrolyte and unreacted monomer
Assignee: Uniroyal Inc
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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
2026-11-03 21:18
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
161 words
THE METHOD WHICH COMPRISES TREATING A SYNTHETIC RUBBER LATEX WHICH IS AN AQUEOUS EMULSION POLYMERIZATE OF SYNTHETIC RUBBER FORMING MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE-1,3, ISOPRENE, 2,3DIMETHYL BUTADIENE AND PIPERYLENE, AND MIXTURES THEREOF, AND MIXTURES OF SUCH BUTADIENES-1,3 WITH UP TO 70% BY WEIGHT OF SUCHMIXTURES OF MONOETHYLENIC COMPOUNDS WHICH CONTAIN A CH2=C<GROUP AND ARE COPOLYMERIZABLE WITH BUTADIENES-1,3, AND WHICH HAVE BEEN POLYMERIZED TO A LATEX OF 60% TO 95% CONVERSION, IN THE PRESENCE OF AT LEAST 5% OF RESIDUAL UNREACTED POLYMERIZABLE MONOMERIC MATERIAL BASED ON THE WEIGHT OF THE SOLIDS PF THE LATEX WITH 0.001% TO 1, OF POLYVINYL METHYL ETHER AND 0.2% TO 2% OF ALKALI SALT ELECTROLYTE SELECTED FROM POTASSIUM, SODIUM, AMMONIUM AND AMINE SALTS BASED ON THE WEIGHT OF THE SOLIDS OF THE LATEX AT A TEMPERATURE FROM 0* C. TO 15* C., SAID POLYVINYL METHYL ETHER HAVING A SPECIFIC VISCOSITY FROM 0.015 TO 1.1, AND THEN REMOVING UNREACTED MONOMERIC MATERIAL FROM THE LATEX
Claim 2
Independent Claim
161 words
THE METHOD WHICH COMPRISES TREATING A SYNTHETIC RUBBER LATEX WHICH IS AN AQUEOUS EMULSION POLYMERIZATE OF SYNTHETIC RUBBER FORMING MONOMERIC MATERIAL SELECTED FROM THE GROUP CONSISTING OF BUTADIENE-1,3, ISOPRENE, 2,3DIMETHYL BUTADIENE AND PIPERYLENE, AND MIXTURES THEREOF, AND MIXTURES OF SUCH BUTADIENES-1,3 WITH UP TO 70% BY WEIGHT OF SUCHMIXTURES OF MONOETHYLENIC COMPOUNDS WHICH CONTAIN A CH2=C<GROUP AND ARE COPOLYMERIZABLE WITH BUTADIENES-1,3, AND WHICH HAVE BEEN POLYMERIZED TO A LATEX OF 60% TO 95% CONVERSION, IN THE PRESENCE OF AT LEAST 5% OF RESIDUAL UNREACTED POLYMERIZABLE MONOMERIC MATERIAL BASED ON THE WEIGHT OF THE SOLIDS PF THE LATEX WITH 0.001% TO 1, OF POLYVINYL METHYL ETHER AND 0.2% TO 2% OF ALKALI SALT ELECTROLYTE SELECTED FROM POTASSIUM, SODIUM, AMMONIUM AND AMINE SALTS BASED ON THE WEIGHT OF THE SOLIDS OF THE LATEX AT A TEMPERATURE FROM 0* C. TO 15* C., SAID POLYVINYL METHYL ETHER HAVING A SPECIFIC VISCOSITY FROM 0.015 TO 1.1, AND THEN REMOVING UNREACTED MONOMERIC MATERIAL FROM THE LATEX
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 |