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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
•
Filing: 1956-09-07
•
Granted: 1960-07-26
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Expires: 1976-09-07
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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)

US2138762A Cited
DE747272C Cited
US2611768A Cited
US2741568A Cited
US2705228A Cited

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

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