US2687382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Quaternary ammonium ion exchange resins
Assignee: BOARD OF COMMISSIONERS OF STATE INSTITUTIONS OF STATE OF FLORIDA
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Filing: 1949-12-05
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Granted: 1954-08-24
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Expires: 1969-12-05
Abstract
No abstract record available.
Inventors
- 👤 George B Butler
- 👤 Robert L Bunch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 19:55
CPC Classifications
C; C08; C08F; C08F26/00; C08F26/02; C08F26/04; C08F8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A PROCESS FOR PREPARING STRONGLY BASIC WATER INSOLUBLE POLYQUATERNARY AMMONIUM ION-EXCHANGE RESINS WHICH COMPRISES POLYMERIZING THROUGH ITS CARBON TO CARBON UNSATURATION AND WITH THE AID OF A PEROXIDE CATALYST; AN UNSATU RATED QUATERNARY AMMONIUM HALIDE HAVING AT LEAST TWO UNSATURATED LOW MOLECULAR WEIGHT ALKENYL GROUP ATTACHED TO THE PENTAVALENT NITROGEN WITH THE REMAINING NITROGEN VALENCES BEING SATISFIED BY A MEMBER OF THE GROUP CONSISTING OF LOW MOLECULAR WEIGHT ALKYL, LOW MOLECULAR WEIGHT ALKENYL, AND ARALKYL AND COVERTING THE RESULTING POLYMER TO THE FREE BASE FORM BY TREATING WITH A BASE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE AND AMMONIUM HYDROXIDE.
Claim 2
Dependent Claim
103 words
A PROCESS FOR PREPARING STRONGLY BASIC WATER INSOLUBLE POLYQUATERNARY AMMONIUM ION-EXCHANGE RESINS WHICH COMPRISES POLYMERIZING THROUGH ITS CARBON TO CARBON UNSATURATION AND WITH THE AID OF A PEROXIDE CATALYST; AN UNSATU RATED QUATERNARY AMMONIUM HALIDE HAVING AT LEAST TWO UNSATURATED LOW MOLECULAR WEIGHT ALKENYL GROUP ATTACHED TO THE PENTAVALENT NITROGEN WITH THE REMAINING NITROGEN VALENCES BEING SATISFIED BY A MEMBER OF THE GROUP CONSISTING OF LOW MOLECULAR WEIGHT ALKYL, LOW MOLECULAR WEIGHT ALKENYL, AND ARALKYL AND COVERTING THE RESULTING POLYMER TO THE FREE BASE FORM BY TREATING WITH A BASE SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE, POTASSIUM HYDROXIDE AND AMMONIUM HYDROXIDE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
US2611768A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-08-23 | 1958-02-22 | 1958-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-23 | 1962-02-22 | 1962-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-23 | 1966-02-22 | 1966-08-24 | $7700.00 | Window Closed / Lapsed |