Patent US3003986A successfully refreshed from Google Patents.
US3003986A
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Process of emulsion polymerization of ethylenically unsaturated monomers utilizing taylor ring flow pattern
Assignee: Imperial Chemical Industries Ltd
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Filing: 1957-07-05
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Granted: 1961-10-10
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Expires: 1977-07-05
Abstract
No abstract record available.
Inventors
- 👤 Long Francis John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 04:41
CPC Classifications
B; B01; B01J; B01J19/00; B01J19/18; B01J2219/00; B01J2219/00049; B01J2219/00051; B01J2219/00074; B01J2219/00076; B01J2219/00081; B01J2219/00087; B01J2219/00094; B01J2219/00101; B01J2219/18; B01J2219/185
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A PROCESS OF CONTINUOUS EMULSION POLYMERIZATION COMPRISING THE STEPS OF FEEDING A STREAM CONSISTING ESSENTIALLY OF ETHYLENICALLY UNSATURATED MONOMER AND A STREAM OF CATALYST INTO A REACTION ZONE IN COUNTER-CURRENT FLOW TO EACH OTHER, STIRRING THE CONTENTS OF SAID ZONE WITH A STIRRER TO PRODUCE A VERTICAL FLOW PATTERN OF TAYLOR RINGS IN WHICH THE STIRRED LIQUID IS SEGMENTED IN PLANES PERPENDICULAR TO THE PRINCIPAL AXIS OF THE VESSEL AND TO THE AXIS OF ROTATION OF THE STIRRER WITH MUCH HIGHER RATES OF MASS TRANSFER WITHIN THAN BETWEEN SAID SEGMENTS AND WELL DEFINED BOUNDARIES SEPARATING THE SEGMENTS, AND WITHDRAWING A POLYMER DISPERSION FROM THE BOTTOM OF SAID ZONE.
Claim 2
Dependent Claim
108 words
A PROCESS OF CONTINUOUS EMULSION POLYMERIZATION COMPRISING THE STEPS OF FEEDING A STREAM CONSISTING ESSENTIALLY OF ETHYLENICALLY UNSATURATED MONOMER AND A STREAM OF CATALYST INTO A REACTION ZONE IN COUNTER-CURRENT FLOW TO EACH OTHER, STIRRING THE CONTENTS OF SAID ZONE WITH A STIRRER TO PRODUCE A VERTICAL FLOW PATTERN OF TAYLOR RINGS IN WHICH THE STIRRED LIQUID IS SEGMENTED IN PLANES PERPENDICULAR TO THE PRINCIPAL AXIS OF THE VESSEL AND TO THE AXIS OF ROTATION OF THE STIRRER WITH MUCH HIGHER RATES OF MASS TRANSFER WITHIN THAN BETWEEN SAID SEGMENTS AND WELL DEFINED BOUNDARIES SEPARATING THE SEGMENTS, AND WITHDRAWING A POLYMER DISPERSION FROM THE BOTTOM OF SAID ZONE.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-09 | 1965-04-10 | 1965-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-09 | 1969-04-10 | 1969-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-09 | 1973-04-10 | 1973-10-10 | $7700.00 | Window Closed / Lapsed |