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US3759859A
Expired / Lapsed
US
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Emulsion copolymerization
Assignee: Union Oil Company of California
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Filing: 1971-07-19
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Granted: 1973-09-18
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Expires: 1991-07-19
Abstract
Abstract LATEX COMPOSITIONS SUITABLE FOR USE AS ADHESIVES AND FOR APPLICATION IN CARPET MANUFACTURING ARE DESCRIBED WHEREIN A RUBBERY COPOLYMER OF A CONJUGATED ALIPHATIC DIOLEFIN, AN UNSATURATED COMONOMER AND A MINOR AMOUNT OF AN ETHYLENICALLY UNSATURATED CARBOXYLIC ACID ARE COPOLYMERIZED IN AN EMULSION POLYMERIZATION USING A COMBINATION OF SURFACTANTS FOUND TO BE HIGHLY EFFECTIVE IN THE EMULSIFICATION OF COMONOMERS AND THE RESULTANT LATEX. SPECIFICALLY DISCLOSED IS A COMBINATION OF AN ESTER OF AN ALKALI METAL SULFOALKANEDIONIC ACID AND A BLOCK POLYMER OF POLYOXYPROPYLENE AND POLYOXYETHYLENE HAVING A LOW TO MODERATE CONTENT OF POLYOXYETHYLENE UNITS.
Inventors
- 👤 P Steinwand
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:08
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; Y; Y10; Y10S; Y10S524/00; Y10S524/915
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |