Patent US3565931A successfully refreshed from Google Patents.
US3565931A
Expired / Lapsed
US
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Process for preparing organotin mercapto carboxylic acid ester sulfides containing more than 18% tin
Assignee: Individual
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Filing: 1967-12-19
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Granted: 1971-02-23
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Expires: 1987-12-19
Abstract
Abstract A PROCESS IS PROVIDED FOR PREPARING ORGANOTIN MERCAPTO CARBOXYLIC ACID ESTER SULFIDES HAVING A HIGH CONCENTRATION OF TIN, IN THE RANGE FROM ABOUT 18 TO ABOUT 35% BY WEIGHT, AND A HIGH CONCENTRATION OF SULFUR, WITHIN THE RANGE FROM ABOUT 10 TO ABOUT 25% SULFUR, BY RACTION OF AN ORGANOTIN HALIDE WITH A MERCAPTO ACID ESTER AND AN ALKALI OR ALKALINE EARTH METAL BASE, AND THEN REACTING THE PRODUCT WITH AN ALKALI OR ALKALINE EARTH METAL SULFIDE. THE COMPOUNDS ARE USEFUL POLYVINYL CHLORIDE RESIN STABILIZERS. ORGANOTIN MERCAPTO ACID ESTER HALIDES ALSO ARE PROVIDED, THAT ARE INTERMEDIATES ON THE PROCESS FOR PREPARING THE ORGANOTIN MERCAPTO CARBOXYLIC ACID ESTER SULFIDES.
Inventors
- 👤 Lawrence Robert Brecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:59
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/02; C08L27/04; C08L27/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-22 | 1974-08-24 | 1975-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-22 | 1978-08-24 | 1979-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-22 | 1982-08-24 | 1983-02-23 | $7700.00 | Window Closed / Lapsed |