Patent US2218711A successfully refreshed from Google Patents.
US3293195A
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US
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Ion exchange resins prepared from a mixed resin of vinyl pyridine copolymers and epihalohydrins-polyalkylene polyamines and methods of making and using same
Assignee: Sybron Transition Corp
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Filing: 1963-11-29
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Granted: 1966-12-20
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Expires: 1983-11-29
Abstract
No abstract record available.
Inventors
- 👤 Albert H Greer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:39
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/02; C08G73/0206; C08G73/0213; C08G73/022; B; B01; B01J; B01J39/00; B01J39/08; B01J39/16; B01J39/18; B01J39/19; C08F; C08F26/00; C08F8/00; C08F8/18; C08F8/30; C08F8/32; C08F2800/00; C08F2800/20; C08F2810/00; C08F2810/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A WEAKLY BASIC, ANION EXCHANGE RESIN COMPRISING THE CONDENSATION PRODUCT OF (A) AN EPIHALOHYDRIN, (B) A LOWER POLYALKYLENE POLYAMINE AND (C) A FLUID, PARTIALLY CROSS-LIKED COPOLYMER OF (1) A MONOMER SELECTED FROM THE GROUP CONSISTING OF AN ALIPHATIC AMINE AND A HETEROCYLIC AMINE, SAIID MONOMER HAVING A POLYMEZABLE CH2=C< GROUP, WITH (2) A CROSS-LINKIN AGENT HAVING AT LEAST TWO TERMINAL CH2=C< GROUPS, WHEREIN SAID COPOLYMER IS PRESENT IN MOLAR PROPORATIONS OF FROM ABOUT 0.05 TO ABOUT 1.0 MOLE PER MOLE OF SAID POLYMAINE AND SAID EPIHALOHYDRIN IS PRESENT IN MOLAR PROPORTIONS OF FROM ABOUT 2.5 TO ABOUT 4 MOLES PER MOLE OF POLYAMINE, AND WHEREIN SAID MONOMER CONSTITUTES FROM ABOUT 50 TO 99.9 MOLAR PERCENT OF SAID COPOLYMER.
Claim 2
Dependent Claim
118 words
A WEAKLY BASIC, ANION EXCHANGE RESIN COMPRISING THE CONDENSATION PRODUCT OF (A) AN EPIHALOHYDRIN, (B) A LOWER POLYALKYLENE POLYAMINE AND (C) A FLUID, PARTIALLY CROSS-LIKED COPOLYMER OF (1) A MONOMER SELECTED FROM THE GROUP CONSISTING OF AN ALIPHATIC AMINE AND A HETEROCYLIC AMINE, SAIID MONOMER HAVING A POLYMEZABLE CH2=C< GROUP, WITH (2) A CROSS-LINKIN AGENT HAVING AT LEAST TWO TERMINAL CH2=C< GROUPS, WHEREIN SAID COPOLYMER IS PRESENT IN MOLAR PROPORATIONS OF FROM ABOUT 0.05 TO ABOUT 1.0 MOLE PER MOLE OF SAID POLYMAINE AND SAID EPIHALOHYDRIN IS PRESENT IN MOLAR PROPORTIONS OF FROM ABOUT 2.5 TO ABOUT 4 MOLES PER MOLE OF POLYAMINE, AND WHEREIN SAID MONOMER CONSTITUTES FROM ABOUT 50 TO 99.9 MOLAR PERCENT OF SAID COPOLYMER.
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) | 1969-12-19 | 1970-06-20 | 1970-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-19 | 1974-06-20 | 1974-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-19 | 1978-06-20 | 1978-12-20 | $7700.00 | Window Closed / Lapsed |