US3297629A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyvinyl chloride resin compositions having increased resistance to heat deterioration
Assignee: Argus Chemical Corp
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Filing: 1962-03-26
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Granted: 1967-01-10
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Expires: 1982-03-26
Abstract
No abstract record available.
Inventors
- 👤 Otto S Kauder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:33
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/36; C08K5/37; C08K5/372; C08K5/45; C08K5/56; C08K5/57
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A RIGID POLYVINYL CHLORIDE RESIN COMPOSITION HAVING INCREASED RESISTANCE TO DETERIORATION WHEN HEATED AT 375* F. COMPRISING (A) A RIGID POLYVINYL CHLORIDE RESIN, (B) AN ORGANOTIN COMPOUND HAVING ORGANIC RADICALS LINKED TO TIN ONLY THROUGH CARBON AND OXYGEN, AT LEAST TWO ORGANIC RADICALS BEING LINKED THROUGH CARBON, AND AT LEAST ONE ORGANIC RADICAL BEING LINKED THROUGH OXYGEN TO A CARBOXYL GROUP OF AN UNSATURATED DICARBOXYLIC ACID ESTER OF AN ALCOHOL HAVING FROM ONE TO TWO HYDROXYL GROUPS, SAID ORGANOTIN COMPOUND BEING PRESENT IN A STABILIZING AMOUNT, AND (C) AN ORGANIC SULFIDE CHARACTERIZED BY THE FORMULA
Claim 2
Dependent Claim
95 words
A RIGID POLYVINYL CHLORIDE RESIN COMPOSITION HAVING INCREASED RESISTANCE TO DETERIORATION WHEN HEATED AT 375* F. COMPRISING (A) A RIGID POLYVINYL CHLORIDE RESIN, (B) AN ORGANOTIN COMPOUND HAVING ORGANIC RADICALS LINKED TO TIN ONLY THROUGH CARBON AND OXYGEN, AT LEAST TWO ORGANIC RADICALS BEING LINKED THROUGH CARBON, AND AT LEAST ONE ORGANIC RADICAL BEING LINKED THROUGH OXYGEN TO A CARBOXYL GROUP OF AN UNSATURATED DICARBOXYLIC ACID ESTER OF AN ALCOHOL HAVING FROM ONE TO TWO HYDROXYL GROUPS, SAID ORGANOTIN COMPOUND BEING PRESENT IN A STABILIZING AMOUNT, AND (C) AN ORGANIC SULFIDE CHARACTERIZED BY THE FORMULA
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) | 1970-01-09 | 1970-07-11 | 1971-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-01-09 | 1974-07-11 | 1975-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-01-09 | 1978-07-11 | 1979-01-10 | $7700.00 | Window Closed / Lapsed |