US3006866A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthetic resins having anionexchange properties
Assignee: Bayer AG
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Filing: 1958-12-02
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Granted: 1961-10-31
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Expires: 1978-12-02
Abstract
No abstract record available.
Inventors
- 👤 Corte Herbert
- 👤 Netz Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:05
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/12; C08F8/30; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS OF PRODUCING A WATER-INSOLUBLE ANION-EXCHANGE RESIN WHICH COMPRISES REACTING IN SWOLLEN FORM A BENZENE-INSOLUBLE CROSS-LINKED UNSUBSTITUTED POLYMER OF AN AROMATIC VINYL HYDROCARBON WITH A CYCLIC N-(HALOGENOALKYL) IMIDE AT AN ELEVATED TEMPERATURE TO INTRODUCE INTO SAID POLYMER AT LEAST 1 N-ALKYL CYCLIC IMIDE GROUP PER 2 AROMATIC NUCLEI, SAID N-ALKYL CYCLIC IMIDE BEING REACTED WITH SAID POLYMER IN AN AMOUNT OF AT LEAST 0.5 MOLECULAR PROPORTION OF IMIDE PER AROMATIC NUCLEUS IN THE POLYMER, AND THEN HYDROLYZING THE RESULTING PRODUCT SO AS TO EFFECT SAPONIFICATION OF THE N-ALKYL CYCLIC IMIDE GROUPS INTRODUCED INTO THE POLYMER.
Claim 2
Dependent Claim
96 words
A PROCESS OF PRODUCING A WATER-INSOLUBLE ANION-EXCHANGE RESIN WHICH COMPRISES REACTING IN SWOLLEN FORM A BENZENE-INSOLUBLE CROSS-LINKED UNSUBSTITUTED POLYMER OF AN AROMATIC VINYL HYDROCARBON WITH A CYCLIC N-(HALOGENOALKYL) IMIDE AT AN ELEVATED TEMPERATURE TO INTRODUCE INTO SAID POLYMER AT LEAST 1 N-ALKYL CYCLIC IMIDE GROUP PER 2 AROMATIC NUCLEI, SAID N-ALKYL CYCLIC IMIDE BEING REACTED WITH SAID POLYMER IN AN AMOUNT OF AT LEAST 0.5 MOLECULAR PROPORTION OF IMIDE PER AROMATIC NUCLEUS IN THE POLYMER, AND THEN HYDROLYZING THE RESULTING PRODUCT SO AS TO EFFECT SAPONIFICATION OF THE N-ALKYL CYCLIC IMIDE GROUPS INTRODUCED INTO THE POLYMER.
References Cited (Backward Citations)
US2629710A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-10-30 | 1965-05-01 | 1965-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-30 | 1969-05-01 | 1969-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-30 | 1973-05-01 | 1973-10-31 | $7700.00 | Window Closed / Lapsed |