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Patent US3247242A successfully refreshed from Google Patents.
US3247242A
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US
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Removal of inhibitors from ethylenically unsaturated monomers
Assignee: Rohm and Haas Co
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Filing: 1962-08-09
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Granted: 1966-04-19
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Expires: 1982-08-09
Abstract
No abstract record available.
Inventors
- 👤 Francis X Mcgarvey
- 👤 Vincent C Meunier
- 👤 Frank X Pollio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 22:57
CPC Classifications
C; C07; C07C; C07C7/00; C07C7/12; B; B01; B01J; B01J41/00; B01J41/04; C07C51/00; C07C51/42; C07C51/47; C07C67/00; C07C67/48; C07C67/56; C08; C08F; C08F2/00; C08F2/38; C08F8/00; C08F8/18; C08F8/24; C08F8/44; C08F2800/00; C08F2800/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
124 words
A PROCESS FOR THE REMOVAL OF HYDROQUINONE, CATECHOL, AMINE AND PHENOLIC POLYMERIZATION INHIBITORS FROM ETHYLENICALLY UNSATURATED NONOMERS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL ACRYLATES, METHACRYLATES, AND ETHACRYLATES AND THE VINYL COMPOUNDS OF THE CLASS CONSISTING OF STYRENE, A-METHYLSTYRENE, ETHYL, STYRENE, VINYL TOLUENE, VINYL CHLORIDE, VINYLIDENE CHLORIDE, VINYL STEARATE, DIVINYLBENZENE, TRIVINYLBENZENE AND VINYLNAPHTHALENE, THE SAID MONOMERS NOT BEING IN CONTACT WITH AN AMOUNT OF WATER THAT EXCEEDS THEIR SATURATION POINT AT ROOM TEMPERATURE, WHICH PROCESS COMPRISES CONTACTING SAID INHIBITOR-CONTAINING MONOMERS WITH THE SALT FORM OF A SUBSTANTIALLY ANHYDROUS MACRORETICULAR-STRUCTURED ANION EXCHANGE RESIN SELECTED FROM THE GROUP CONSISTING OF QUATERNARY AMMONIUM AND TERTIARY AMINE ANION EXCHANGE RESINS, SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, SULFATE, NITRATE, CARBONATE, BICARBONATE AND PHOSPHATE.
Claim 2
Dependent Claim
124 words
A PROCESS FOR THE REMOVAL OF HYDROQUINONE, CATECHOL, AMINE AND PHENOLIC POLYMERIZATION INHIBITORS FROM ETHYLENICALLY UNSATURATED NONOMERS SELECTED FROM THE GROUP CONSISTING OF ALKYL AND ARYL ACRYLATES, METHACRYLATES, AND ETHACRYLATES AND THE VINYL COMPOUNDS OF THE CLASS CONSISTING OF STYRENE, A-METHYLSTYRENE, ETHYL, STYRENE, VINYL TOLUENE, VINYL CHLORIDE, VINYLIDENE CHLORIDE, VINYL STEARATE, DIVINYLBENZENE, TRIVINYLBENZENE AND VINYLNAPHTHALENE, THE SAID MONOMERS NOT BEING IN CONTACT WITH AN AMOUNT OF WATER THAT EXCEEDS THEIR SATURATION POINT AT ROOM TEMPERATURE, WHICH PROCESS COMPRISES CONTACTING SAID INHIBITOR-CONTAINING MONOMERS WITH THE SALT FORM OF A SUBSTANTIALLY ANHYDROUS MACRORETICULAR-STRUCTURED ANION EXCHANGE RESIN SELECTED FROM THE GROUP CONSISTING OF QUATERNARY AMMONIUM AND TERTIARY AMINE ANION EXCHANGE RESINS, SAID SALT BEING SELECTED FROM THE GROUP CONSISTING OF CHLORIDE, SULFATE, NITRATE, CARBONATE, BICARBONATE AND PHOSPHATE.
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) | 1969-04-18 | 1969-10-18 | 1970-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-18 | 1973-10-18 | 1974-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-18 | 1977-10-18 | 1978-04-19 | $7700.00 | Window Closed / Lapsed |