US3342840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cationic ester production
Assignee: Shell USA Inc
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Filing: 1964-03-23
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Granted: 1967-09-19
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Expires: 1984-03-23
Abstract
No abstract record available.
Inventors
- 👤 Sobolev Igor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:51
CPC Classifications
A; A01; A01N; A01N25/00; A01N25/30; C; C08; C08G; C08G59/00; C08G59/18; C08G59/20; C08G59/22; C08G59/28; Y; Y10; Y10S; Y10S516/00; Y10S516/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
THE PROCESS OF PRODUCING MONOMERIC CATIONIC ESTERS BY REACTING (A) AQUEOUS GLYCIDYLTRIALKYLAMMONIUM HALIDE WHEREIN EACH OF SAID ALKYLS HAS FROM 1 TO 12 CARBON ATOMS, AT LEAST TWO OF THE ALKYLS HAVE FROM 1 TO 4 CARBON ATOMS, SAID HALIDE IS HALOGEN OF ATOMIC NUMBER FROM 17 TO 35, AND THE CONCENTRATION OF SAID GLYCIDYLTRIALKYLAMMONIUM HALIDE IN SAID AQUEOUS SOLUTION IS FROM ABOUT 50% TO ABOUT 80% BY WEIGHT, WITH (B) HYDROCARBON MONO- TO TETRACARBOXYLIC FATTY ACID HAVING FROM 0 TO 4 ETHYLENIC LINKAGES AND FROM 9 TO 30 CARBON ATOMS FOR EACH CARBOXYL GROUP AND SAID ACID HAVING NO MORE THAN 70 CARBON ATOMS, THE RATIO OF MOLES OF CARBOXYL GROUP TO THE MOLES OF GLYCIDYLTRIALKYLAMMONIUM HALIDE BEING FROM ABOUT 1:4 TO ABOUT 4:1, IN LIQUID-PHASE SOLUTION AT A TEMPERATURE FROM ABOUT 40*C. TO ABOUT 140*C.
Claim 2
Dependent Claim
137 words
THE PROCESS OF PRODUCING MONOMERIC CATIONIC ESTERS BY REACTING (A) AQUEOUS GLYCIDYLTRIALKYLAMMONIUM HALIDE WHEREIN EACH OF SAID ALKYLS HAS FROM 1 TO 12 CARBON ATOMS, AT LEAST TWO OF THE ALKYLS HAVE FROM 1 TO 4 CARBON ATOMS, SAID HALIDE IS HALOGEN OF ATOMIC NUMBER FROM 17 TO 35, AND THE CONCENTRATION OF SAID GLYCIDYLTRIALKYLAMMONIUM HALIDE IN SAID AQUEOUS SOLUTION IS FROM ABOUT 50% TO ABOUT 80% BY WEIGHT, WITH (B) HYDROCARBON MONO- TO TETRACARBOXYLIC FATTY ACID HAVING FROM 0 TO 4 ETHYLENIC LINKAGES AND FROM 9 TO 30 CARBON ATOMS FOR EACH CARBOXYL GROUP AND SAID ACID HAVING NO MORE THAN 70 CARBON ATOMS, THE RATIO OF MOLES OF CARBOXYL GROUP TO THE MOLES OF GLYCIDYLTRIALKYLAMMONIUM HALIDE BEING FROM ABOUT 1:4 TO ABOUT 4:1, IN LIQUID-PHASE SOLUTION AT A TEMPERATURE FROM ABOUT 40*C. TO ABOUT 140*C.
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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |