US3133030A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low capacity sulfonated cation
Assignee: —
•
Filing: —
•
Granted: 1964-05-12
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Expires: 1981-05-12
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 20:39
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/34
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A METHOD FOR MAKING WATER-INSOLUBLE UNIFORMLY SULFONATED RESINOUS ALKENYLAROMATIC POLYMERS HAVING FROM ABOUT 10 TO ABOUT 60 PERCENT OF THE AVAILABLE AROMATIC NUCLEI SULFONATED BY COOLING TO BELOW -20%C. A RESINOUS ALKENYLAROMATIC POLYMER CROSSLINKED WITH ABOUT 0.1 TO ABOUT 10 WEIGHT PERCENT, RESIN BASIS, OF A CROSSLINKING AGENT HAVING TWO VINYLIDENE GROUPS, AND SWOLLEN WITH A LIQUID SULFONATION-RESISTANT CHLORINTED HYDROCARON HAVING A BOILING POINT UP TO ABOUT 120*C., MIXING THEREWITH CHLOROSULFONIC ACID IN AMOUNT SUFFICIENT TO PROVIDE FROM 1 TO 6 SULFONATE GROUPS FOR EACH 10 AVAILABLE AROMATIC NUCLEI AND HEATING THE REACTION MIXTURE TO A SULFONATION TEMPERATURE WITHIN THE RANGE -20 TO 20*C. FOR A TIME SUFFICIENT TO PROVIDE A UNIFORMLY AND INCOMPLETELY SULFONATED RESINOUS POLYMERIC PRODUCT, SAID POLYMER PRIOR TO SAID SULFONATION BEING FREE FROM ANIONIC SUBSTITUENT GROUPS.
Claim 2
Independent Claim
130 words
A METHOD FOR MAKING WATER-INSOLUBLE UNIFORMLY SULFONATED RESINOUS ALKENYLAROMATIC POLYMERS HAVING FROM ABOUT 10 TO ABOUT 60 PERCENT OF THE AVAILABLE AROMATIC NUCLEI SULFONATED BY COOLING TO BELOW -20%C. A RESINOUS ALKENYLAROMATIC POLYMER CROSSLINKED WITH ABOUT 0.1 TO ABOUT 10 WEIGHT PERCENT, RESIN BASIS, OF A CROSSLINKING AGENT HAVING TWO VINYLIDENE GROUPS, AND SWOLLEN WITH A LIQUID SULFONATION-RESISTANT CHLORINTED HYDROCARON HAVING A BOILING POINT UP TO ABOUT 120*C., MIXING THEREWITH CHLOROSULFONIC ACID IN AMOUNT SUFFICIENT TO PROVIDE FROM 1 TO 6 SULFONATE GROUPS FOR EACH 10 AVAILABLE AROMATIC NUCLEI AND HEATING THE REACTION MIXTURE TO A SULFONATION TEMPERATURE WITHIN THE RANGE -20 TO 20*C. FOR A TIME SUFFICIENT TO PROVIDE A UNIFORMLY AND INCOMPLETELY SULFONATED RESINOUS POLYMERIC PRODUCT, SAID POLYMER PRIOR TO SAID SULFONATION BEING FREE FROM ANIONIC SUBSTITUENT GROUPS.
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) | 1967-05-12 | 1967-11-11 | 1968-05-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-12 | 1971-11-11 | 1972-05-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-12 | 1975-11-11 | 1976-05-12 | $7700.00 | Window Closed / Lapsed |