Patent FR835984A successfully refreshed from Google Patents.
US2844607A
Expired / Lapsed
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Process for the manufacture of sulpho-alkylesters of fatty acids
Assignee: GAF Chemicals Corp
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Filing: 1956-08-09
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Granted: 1958-07-22
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Expires: 1976-08-09
Abstract
No abstract record available.
Inventors
- 👤 Gushin Harold
- 👤 Frederick J Zelman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:23
CPC Classifications
C; C07; C07C; C07C303/00; C07C303/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
PROCESS FOR THE PRODUCTION OF SULFOETHYLESTERS OF FATTY ACIDS, WHICH COMPRISES FORMING A SLURRY BY MIXING TOGETHER DRY SODIUM-ISETHIONATE IN COURSELY PULVERIZED FORM WITH A FATTY ACID HALIDE, DELIVERING SAID SLURRY TO A SURFACE HEATED TO AN ELEVATED TEMPERATURE SWEPT BY RAPIDLY MOVING MEMBERS SO AS TO PRODUCE A THIN FILM OF REACTION PRODUCT ON SAID HEATED SURFACE AND SIMULTANEOUSLY CAUSING ATTRITION OF SAID FILM BY VIOLENT TURBULENCE EFFECTED BY THE SAID RAPIDLY MOVING MEMBERS, THE TURBULENCE AND TEMPERATURE BEING MAINTAINED UNTIL THE REACTION BETWEEN THE SODIUM-ISETHIONATE AND THE FATTY ACID HALIDE IS SUBSTANTIALLY COMPLETE, THE ATTRITION BEING UTILIZED TO SEPARATE THE REACTION PRODUCT FROM SAID SURFACE.
Claim 2
Dependent Claim
107 words
PROCESS FOR THE PRODUCTION OF SULFOETHYLESTERS OF FATTY ACIDS, WHICH COMPRISES FORMING A SLURRY BY MIXING TOGETHER DRY SODIUM-ISETHIONATE IN COURSELY PULVERIZED FORM WITH A FATTY ACID HALIDE, DELIVERING SAID SLURRY TO A SURFACE HEATED TO AN ELEVATED TEMPERATURE SWEPT BY RAPIDLY MOVING MEMBERS SO AS TO PRODUCE A THIN FILM OF REACTION PRODUCT ON SAID HEATED SURFACE AND SIMULTANEOUSLY CAUSING ATTRITION OF SAID FILM BY VIOLENT TURBULENCE EFFECTED BY THE SAID RAPIDLY MOVING MEMBERS, THE TURBULENCE AND TEMPERATURE BEING MAINTAINED UNTIL THE REACTION BETWEEN THE SODIUM-ISETHIONATE AND THE FATTY ACID HALIDE IS SUBSTANTIALLY COMPLETE, THE ATTRITION BEING UTILIZED TO SEPARATE THE REACTION PRODUCT FROM SAID SURFACE.
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) | 1961-07-21 | 1962-01-20 | 1962-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-21 | 1966-01-20 | 1966-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-21 | 1970-01-20 | 1970-07-22 | $7700.00 | Window Closed / Lapsed |