US3244652A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable polyethylene latices
Assignee: Gulf Oil Corp
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Filing: 1961-04-21
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Granted: 1966-04-05
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Expires: 1981-04-21
Abstract
No abstract record available.
Inventors
- 👤 Arthur F Helin
- 👤 Gerald J Mantell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:34
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/09; C08K5/098; C08K5/36; C08K5/41
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
169 words
A PROCESS FOR THE PREPARATION BY EMULSION POLYMERIZATION OF A FLUID, REACTOR-STABLE, STRIP-STABLE, AND SHELFSTABLE ANIONICALLY EMULSIFIED POLETHYLENE LATEX, WHICH PROCESS COMPRISES POLYMERIZING ETHYLENE AT TEMPERATURES BETWEEN ABOUT 70*C. AND ABOUT 100*C. AND AT PRESSURES BETWEEN ABOUT 2100 POUNDS PER SQUARE INCH AND ABOUT 5000 POUNDS PER SQUARE INCH IN THE PRESENCE OF AN AQUEOUS MEDIUM CONSISTING ESSENTIALLY OF WATER, A PERSULFATE INITATOR NOT EXCEEDING ABOUT 0.5 PERCENT BY WEIGHT OF THE AQUEOUS MEDIUM, AND FROM ABOUT 0.9 TO ABOUT 9 PERCENT BY WEIGHT OF THE AQUEOUS MEDIUM OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF (1) A SALT OF A SATURATED FATTY ACID HAVING 12-18 CARBON ATOMS IN COMBINATION WITH A PH ADJUSTER MAINTAINING THE PH OF SAID AQUEOUS MEDIUM ABOVE ABOUT 8.5, (2) A SALT OF A SULFATE OF A SATURATED FATTY ALCOHOL HAVING ABOUT 12-18 CARBON ATOMS, AND (3) A SALT OF A SULFATE OF AN ETHOXYLATED SATURATED FATTY ALCOHOL CONTAINING 12-18 CARBON ATOMS AND AN AVERAGE NUMBER OF ETHOXY GROUPS BETWEEN 1 AND 5.
Claim 2
Dependent Claim
169 words
A PROCESS FOR THE PREPARATION BY EMULSION POLYMERIZATION OF A FLUID, REACTOR-STABLE, STRIP-STABLE, AND SHELFSTABLE ANIONICALLY EMULSIFIED POLETHYLENE LATEX, WHICH PROCESS COMPRISES POLYMERIZING ETHYLENE AT TEMPERATURES BETWEEN ABOUT 70*C. AND ABOUT 100*C. AND AT PRESSURES BETWEEN ABOUT 2100 POUNDS PER SQUARE INCH AND ABOUT 5000 POUNDS PER SQUARE INCH IN THE PRESENCE OF AN AQUEOUS MEDIUM CONSISTING ESSENTIALLY OF WATER, A PERSULFATE INITATOR NOT EXCEEDING ABOUT 0.5 PERCENT BY WEIGHT OF THE AQUEOUS MEDIUM, AND FROM ABOUT 0.9 TO ABOUT 9 PERCENT BY WEIGHT OF THE AQUEOUS MEDIUM OF A MEMBER SELECTED FROM THE GROUP CONSISTING OF (1) A SALT OF A SATURATED FATTY ACID HAVING 12-18 CARBON ATOMS IN COMBINATION WITH A PH ADJUSTER MAINTAINING THE PH OF SAID AQUEOUS MEDIUM ABOVE ABOUT 8.5, (2) A SALT OF A SULFATE OF A SATURATED FATTY ALCOHOL HAVING ABOUT 12-18 CARBON ATOMS, AND (3) A SALT OF A SULFATE OF AN ETHOXYLATED SATURATED FATTY ALCOHOL CONTAINING 12-18 CARBON ATOMS AND AN AVERAGE NUMBER OF ETHOXY GROUPS BETWEEN 1 AND 5.
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) | 1969-04-04 | 1969-10-04 | 1970-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-04 | 1973-10-04 | 1974-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-04 | 1977-10-04 | 1978-04-05 | $7700.00 | Window Closed / Lapsed |