US3787357A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synergistic mercapto organotin stabilizers
Assignee: ARGUS CHEM CORP US
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Filing: 1972-09-07
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Granted: 1974-01-22
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Expires: 1992-09-07
Abstract
Abstract A SYNERGISTIC STABILIZER COMPOSITION WHICH IS LIQUID AT AMBIENT TEMPERATURE IS PROVIDED FOR INCREASING RESISTANCE TO EARLY DISCOLORATION OF POLYVINYL CHLORIDE RESINS HEATED TO 400*F. AND FOR IMPROVING THEIR PROCESSABILITY COMPRISING: (1) AT LEAST ONE MONOALKYLTIN MERCAPTOCARBOXYLIC ACID ESTER HAVING TETRAVALENT TIN LINKED DIRECTLY TO CARBON AND TO SULFUR, (2) AT LEAST ONE DIALKYLTIN COMPOUND, HAVING TETRAVALENT TIN LINKED DIRECTLY TO CARBON AND TO SULFUR, FOR EXAMPLE, ORGANOTIN SULFIDE, A MERCAPTOCARBOXYLIC ACID ESTER OR AN ESTER SULFIDE, (3) BARIUM CARBONATE AND (4) AN ORGANIC SALT ACTING AS A LIQUIFIER FOR THE BARIUM CARBONATE.
Inventors
- 👤 L Brecker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:55
CPC Classifications
C; C08; C08K; C08K13/00; C08K13/02
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) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |