US2946758A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anion exchange resins from esters of acrylic acids with polyhydroxy substituted quaternary ammonium salts
Assignee: Imperial Chemical Industries Ltd
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Filing: 1956-09-07
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Granted: 1960-07-26
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Expires: 1976-09-07
Abstract
No abstract record available.
Inventors
- 👤 Zenftman Henryk
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:33
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C08; C08F; C08F20/00; C08F20/02; C08F20/10; C08F20/34; C08F8/00; C08F8/44; Y; Y10; Y10S; Y10S526/00; Y10S526/923
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
A WATER-INSOLUBLE ANION EXCHANGE RESIN WHICH IS A POLYMER OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF THE SALTS OF ESTERS, WITH AT LEAST TWO MOLES OF A MONOMERIC ACID SELECTED FROM THE CLASS CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID, OF A MEMBER OF THE CLASS OF ALCOHOLIC QUATERNARY AMINE CATIONS CONSISTING OF (1) NALKYL, N-METHYL-N,N-BIS (B-HYDROXY ETHYL) AMMONIUM, (2) N,N''-DIALKYL-N,N''-BIS (B-HYDROXYMETHYL) PIPERAUM, (3) N,N''-DIALKYL-N,N''-BIS (B-HYDROXYETHYL) PIPERAZINIUM, (4) N-ALKYL-N-ETHYL-N,N-BIS (B-HYDROXYETHYL) AMMONIUM, (5) N-ALKYL-N-METHYL-N,N-BIS (V-HYDROXYPROPYL) AMMONIUM, (6) N-ALKYL-N,N,N, TRIS (B-HYDROXYETHYL) AMMONIUM AND (7) N,N''-DIALKYL,N,N,N'',N'' TETRAKIS (B-HYDROXYETHYL) ETHYLENE DIAMMONIUM, THE SALTS BEING SALTS WITH ANIONS SELECTED FROM THE GROUP CONSISTING OF MONOMETHYL SULFATE, MONOETHYL SULFATE, CHLORIDE, BROMIDE AND IODIDE, SAID POLYMERS BEING MANUFACTURED BY POLYMERIZATION IN THE PRESENCE OF A SOLVENT FOR SAID MONOMER AND A POLYMERIZATION CATALYST, AND SAID ALKYL GROUPS HAVING FROM ONE TO THREE CARBON ATOMS.
Claim 2
Dependent Claim
139 words
A WATER-INSOLUBLE ANION EXCHANGE RESIN WHICH IS A POLYMER OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF THE SALTS OF ESTERS, WITH AT LEAST TWO MOLES OF A MONOMERIC ACID SELECTED FROM THE CLASS CONSISTING OF ACRYLIC ACID AND METHACRYLIC ACID, OF A MEMBER OF THE CLASS OF ALCOHOLIC QUATERNARY AMINE CATIONS CONSISTING OF (1) NALKYL, N-METHYL-N,N-BIS (B-HYDROXY ETHYL) AMMONIUM, (2) N,N''-DIALKYL-N,N''-BIS (B-HYDROXYMETHYL) PIPERAUM, (3) N,N''-DIALKYL-N,N''-BIS (B-HYDROXYETHYL) PIPERAZINIUM, (4) N-ALKYL-N-ETHYL-N,N-BIS (B-HYDROXYETHYL) AMMONIUM, (5) N-ALKYL-N-METHYL-N,N-BIS (V-HYDROXYPROPYL) AMMONIUM, (6) N-ALKYL-N,N,N, TRIS (B-HYDROXYETHYL) AMMONIUM AND (7) N,N''-DIALKYL,N,N,N'',N'' TETRAKIS (B-HYDROXYETHYL) ETHYLENE DIAMMONIUM, THE SALTS BEING SALTS WITH ANIONS SELECTED FROM THE GROUP CONSISTING OF MONOMETHYL SULFATE, MONOETHYL SULFATE, CHLORIDE, BROMIDE AND IODIDE, SAID POLYMERS BEING MANUFACTURED BY POLYMERIZATION IN THE PRESENCE OF A SOLVENT FOR SAID MONOMER AND A POLYMERIZATION CATALYST, AND SAID ALKYL GROUPS HAVING FROM ONE TO THREE CARBON ATOMS.
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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |