US2723255A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ester derivatives of chlorosulfonated hydrocarbon polymers
Assignee: EIDP Inc
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Filing: 1952-12-23
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Granted: 1955-11-08
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Expires: 1972-12-23
Abstract
No abstract record available.
Inventors
- 👤 Warren F Busse
- 👤 Malcolm A Smook
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:43
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/30; C08F8/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
THE PROCESS FOR PREPARING AN ESTER OF A CHLOROSULFONATED NORMALLY SOLID POLYMER OF ETHYLENE WHICH CONSISTS ESSENTIALLY OF ADDING TO A SOLUTION OF THE POLYMER IN AN ORGANIC SOLVENT A MONOHYDRIC COMPOUND OF THE FORMULA R''-OH WHEREIN R'' REPRESENTS A HYDROCARBON RADICAL OF THE CLAS CONSISTING OF ALKYL, ARYL AND ARALKYL RADICALS, STIRRING UNTIL THE MIXTURE IS SUBSTANTIALLY HOMOGENEOUS. THE ADDING TO SUCH MIXTURE A TRIALKYL AMINE WHICH HAS A KB OF AT LEAST 2X10-9, STIRRING THE RESULTING MIXTURE UNTIL IT IS SUBSTANTILLY HOMOGENEOUS, SUCH PROCESS BEING CONDUCTED UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT ABOUT ATMOSPHERIC TEMPERATURE, AND SUBSEQUENTLY RECOVERING THE ESTER FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
105 words
THE PROCESS FOR PREPARING AN ESTER OF A CHLOROSULFONATED NORMALLY SOLID POLYMER OF ETHYLENE WHICH CONSISTS ESSENTIALLY OF ADDING TO A SOLUTION OF THE POLYMER IN AN ORGANIC SOLVENT A MONOHYDRIC COMPOUND OF THE FORMULA R''-OH WHEREIN R'' REPRESENTS A HYDROCARBON RADICAL OF THE CLAS CONSISTING OF ALKYL, ARYL AND ARALKYL RADICALS, STIRRING UNTIL THE MIXTURE IS SUBSTANTIALLY HOMOGENEOUS. THE ADDING TO SUCH MIXTURE A TRIALKYL AMINE WHICH HAS A KB OF AT LEAST 2X10-9, STIRRING THE RESULTING MIXTURE UNTIL IT IS SUBSTANTILLY HOMOGENEOUS, SUCH PROCESS BEING CONDUCTED UNDER SUBSTANTIALLY ANHYDROUS CONDITIONS AT ABOUT ATMOSPHERIC TEMPERATURE, AND SUBSEQUENTLY RECOVERING THE ESTER FROM THE REACTION MIXTURE.
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) | 1958-11-07 | 1959-05-09 | 1959-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-11-07 | 1963-05-09 | 1963-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-11-07 | 1967-05-09 | 1967-11-08 | $7700.00 | Window Closed / Lapsed |