Patent US3300416A successfully refreshed from Google Patents.
US3300416A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exchange resins from vinylbenzyl sulfonium resins and method for making same
Assignee: Dow Chemical Co
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Filing: 1961-02-16
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Granted: 1967-01-24
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Expires: 1981-02-16
Abstract
No abstract record available.
Inventors
- 👤 Melvin J Hatch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:49
CPC Classifications
C; C08; C08F; C08F8/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
191 words
A METHOD FOR MAKING AN EXCHANGE RESIN BY REACTING IN SUBSTANTIALLY STOCHIOMETRIC PROPORTIONS AT A REACTION TEMPERATURE OF 50*-100*C. A VINYLBENZYLIC SULFONIUM ANION EXCHANGE RESIN WITH AN IONIZABLE NUCLEOPHILIC REAGENT OF THE GROUP CONSISTING OF THOSE WHICH HAVE ONE OR MORE EXCHANGING MOIETIES AND THOSE WHICH HAVE ONE OR MORE ESTER, AMIDE, NITRILE OR ALKANOL MOIETIES WHICH CAN BE CONVERTED TO EXCHANGING MOIETIES BY HYDROLYSIS OR OXIDATION REACTIONS, RESPECTIVELY, AND IS SOLUBLE TO THE CONSISTING OF WATER AND ALIPHATIC LIQUID ALCOHOLS HAVING FROM 1 TO 10 CARBON ATOMS IN THE MOLECULE, SAID REAGENT BEING ONE HAVING A PROPERTY OF REACTING IN STOICHIOMETRIC PROPORTIONS WITH BENZYL CHLORIDE AT 20* TO 100*C. TO DISPLACE AT LEAST 5 MOLE PERCENT OF CHLORIDE THEREFROM IN 48 HOURS, WHICH REAGENT COMPRISES A GROUP WHICH REACTS TO ESTABLISH A COVALENT BOND WITH THE BENZYLIC CARBON ATOM OF THE RESIN AND TO YIELD A SULFIDE BY-PRODUCT, TO GIVE A SUBSTITUTED VINYLBENZYLIC RESIN OF THE GROUP CONSISTING OF THOSE WHICH POSSESS EXCHANGING MOIETIES AND THOSE WHICH HAVE ONE OR MORE ESTER, AMIDE, NITRILE OR ALKANOL GROUPS WHICH CAN BE CONVERTED TO HAVE EXCHANGING MOIETIES BY HYDROLYSIS OR OXIDATION REACTIONS.
Claim 2
Independent Claim
191 words
A METHOD FOR MAKING AN EXCHANGE RESIN BY REACTING IN SUBSTANTIALLY STOCHIOMETRIC PROPORTIONS AT A REACTION TEMPERATURE OF 50*-100*C. A VINYLBENZYLIC SULFONIUM ANION EXCHANGE RESIN WITH AN IONIZABLE NUCLEOPHILIC REAGENT OF THE GROUP CONSISTING OF THOSE WHICH HAVE ONE OR MORE EXCHANGING MOIETIES AND THOSE WHICH HAVE ONE OR MORE ESTER, AMIDE, NITRILE OR ALKANOL MOIETIES WHICH CAN BE CONVERTED TO EXCHANGING MOIETIES BY HYDROLYSIS OR OXIDATION REACTIONS, RESPECTIVELY, AND IS SOLUBLE TO THE CONSISTING OF WATER AND ALIPHATIC LIQUID ALCOHOLS HAVING FROM 1 TO 10 CARBON ATOMS IN THE MOLECULE, SAID REAGENT BEING ONE HAVING A PROPERTY OF REACTING IN STOICHIOMETRIC PROPORTIONS WITH BENZYL CHLORIDE AT 20* TO 100*C. TO DISPLACE AT LEAST 5 MOLE PERCENT OF CHLORIDE THEREFROM IN 48 HOURS, WHICH REAGENT COMPRISES A GROUP WHICH REACTS TO ESTABLISH A COVALENT BOND WITH THE BENZYLIC CARBON ATOM OF THE RESIN AND TO YIELD A SULFIDE BY-PRODUCT, TO GIVE A SUBSTITUTED VINYLBENZYLIC RESIN OF THE GROUP CONSISTING OF THOSE WHICH POSSESS EXCHANGING MOIETIES AND THOSE WHICH HAVE ONE OR MORE ESTER, AMIDE, NITRILE OR ALKANOL GROUPS WHICH CAN BE CONVERTED TO HAVE EXCHANGING MOIETIES BY HYDROLYSIS OR OXIDATION REACTIONS.
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) | 1970-01-23 | 1970-07-25 | 1971-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-23 | 1974-07-25 | 1975-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-23 | 1978-07-25 | 1979-01-24 | $7700.00 | Window Closed / Lapsed |