US2968642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stabilizers for polymeric compositions
Assignee: Lubrizol Corp
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Filing: 1957-01-17
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Granted: 1961-01-17
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Expires: 1977-01-17
Abstract
No abstract record available.
Inventors
- 👤 Suer William M Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:41
CPC Classifications
C; C08; C08G; C08G61/00; C08F; C08F8/00; C08F8/34; C08G16/00; C08K; C08K5/00; C08L; C08L101/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
132 words
A THERMALLY STABLE COMPOSITION CONTAINING A VINYL CHLORIDE POLYMER AND A MINOR PROPORTION FO A PRODUCT PREPARED BY THE PROCESS WHICH COMPRISES PREPARING A MIXTURE OF (A) AN ALKYLATED MONOHYDROXY AROMATIC COMPOUND, (B) AN OIL-SOLUBLE, METAL-FREE, NON-TAUTOMERIC ORGANIC POLAR COMPOUND HAVING AT LEAST 12 ALIPHATIC CARBON ATOMS AND SELECTED FROM THE CLASS CONSISTING OF SULFOXIDES, ALCOHOLS, ESTERS AND AMINES, PRESENT IN AN AMOUNT GREATER THAT THAT OF (A) ON A WEIGHT BASIS, AND (C) AT LEAST TWO EQUIVALENTS OF A BASIS BARIUM COMPOUND PER EQUIVALENT OF (A) AND HEATING SAID MIXTURE TO DRIVE OFF SUBSTANTIALLY ALL FREE WATER WHICH MAY BE PRESENT AND THEN TREATING SAID WATERFREE MIXTURE WITH AN ACIDIC GAS HAVING AN IONIZATION CONSTANT GREATER THAN THAT OF (A) UNTIL THE TITRATABLE BASICITY OF THE MIXTURE HAS BEEN SUBSTANTIALLY REDUCED.
Claim 2
Dependent Claim
132 words
A THERMALLY STABLE COMPOSITION CONTAINING A VINYL CHLORIDE POLYMER AND A MINOR PROPORTION FO A PRODUCT PREPARED BY THE PROCESS WHICH COMPRISES PREPARING A MIXTURE OF (A) AN ALKYLATED MONOHYDROXY AROMATIC COMPOUND, (B) AN OIL-SOLUBLE, METAL-FREE, NON-TAUTOMERIC ORGANIC POLAR COMPOUND HAVING AT LEAST 12 ALIPHATIC CARBON ATOMS AND SELECTED FROM THE CLASS CONSISTING OF SULFOXIDES, ALCOHOLS, ESTERS AND AMINES, PRESENT IN AN AMOUNT GREATER THAT THAT OF (A) ON A WEIGHT BASIS, AND (C) AT LEAST TWO EQUIVALENTS OF A BASIS BARIUM COMPOUND PER EQUIVALENT OF (A) AND HEATING SAID MIXTURE TO DRIVE OFF SUBSTANTIALLY ALL FREE WATER WHICH MAY BE PRESENT AND THEN TREATING SAID WATERFREE MIXTURE WITH AN ACIDIC GAS HAVING AN IONIZATION CONSTANT GREATER THAN THAT OF (A) UNTIL THE TITRATABLE BASICITY OF THE MIXTURE HAS BEEN SUBSTANTIALLY REDUCED.
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) | 1964-01-17 | 1964-07-18 | 1965-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-17 | 1968-07-18 | 1969-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-17 | 1972-07-18 | 1973-01-17 | $7700.00 | Window Closed / Lapsed |