US3824202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High temperature polyvinyl chloride compositions
Assignee: Associated Lead Inc
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Filing: 1971-10-26
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Granted: 1974-07-16
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Expires: 1991-10-26
Abstract
Abstract A COMBINATION OF COMPONENTS USEFUL AS ADDITIVES IN POLYVINYL CHLORIDE RESIN COMPOSITIONS FOR PRODUCING THERMOPLAATIC COMPOUNDS HAVING SUPERIOR RESISTANCE TO CHEMICAL AND PHYSICAL DEGRADATION AT HIGH TEMPERATURES COMPRISES A STABILIZER, INCLUDING ONE OR MORE ANTI-OXIDANTS, AND AN ART FILTER, THE LATTER BEING SELECTED FROM GROUP II-A METAL SULFATES. A FLEXIBLE, HEAT RESISTANT THERMOPLASTIC COMPOUND IS PREPARED BY ADDING THE INDIVIDUAL COMPONENTS SEPARATELY OR OPTICALLY AS A HOMOGENEOUS MIXTURE HEREINAFTER REFERRED TO AS A STABILIZER FILLER ADDITIVE, TO A POLYVINYL CHLORIDE RESIN OF HIGH MOLECULAR WEIGHT AND A PLASTICIZER OF RELATIVELY LOW VOLATILITY.
Inventors
- 👤 E White
- 👤 E Augustyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:54
CPC Classifications
C; C08; C08K; C08K3/00; C08K3/30; 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) | 1977-07-15 | 1978-01-14 | 1978-07-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-15 | 1982-01-14 | 1982-07-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-15 | 1986-01-14 | 1986-07-16 | $7700.00 | Window Closed / Lapsed |