Patent US357074A successfully refreshed from Google Patents.
US2776984A
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Process for improving characteristics of plasticizers and products therefrom
Assignee: Usines de Melle SA
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Filing: 1953-02-20
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Granted: 1957-01-08
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Expires: 1973-02-20
Abstract
No abstract record available.
Inventors
- 👤 Mention Maurice
- 👤 Bourguignon Pierre
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:49
CPC Classifications
H; H01; H01B; H01B3/00; H01B3/18; H01B3/30; H01B3/42; C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
114 words
A PROCESS WHICH COMPRISES ALUMINA INTO CONTACT WITH AN ESTER PLASTICIZER, SAID PLASTICIZER BEING AN ESTER FORMED FROM AN ACID SELECTED FROM THE GROUP CONSISTING OF MONOCARBOXYLIC ALIPHATIC ACIDS, DICARBOXYLIC ALIPHATIC ACIDS AND DICARBOXYLIC AROMATIC ACIDS AND FROM AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF MONOAND DI-HYDRIC ALIPHATIC ALCOHOLS, EACH OF SAID ACIDS AND ALCOHOLS CONTAINING 6-10 CARBON ATOMS IN THEIR RESPECTIVE CHAINS AND RINGS, AT A TEMPERATURE OF 20 TO 200* C., FOR AT LEAST ABOUT 15 MINUTES, THE PROPORTION BY WEIGHT OF ALUMINA BROUGHT INTO CONTACT WITH THE PLASTICIZER BEING AT LEAST ABOUT 10%, AND SEPARATING THE ALUMINA AND PLASTICIZER AND RECOVERING THE PLASTICIZER HAVING IMPROVED CHARACTERISTICS INCLUDING INCREASED ELECTRICAL RESISTIVITY.
Claim 2
Dependent Claim
114 words
A PROCESS WHICH COMPRISES ALUMINA INTO CONTACT WITH AN ESTER PLASTICIZER, SAID PLASTICIZER BEING AN ESTER FORMED FROM AN ACID SELECTED FROM THE GROUP CONSISTING OF MONOCARBOXYLIC ALIPHATIC ACIDS, DICARBOXYLIC ALIPHATIC ACIDS AND DICARBOXYLIC AROMATIC ACIDS AND FROM AN ALCOHOL SELECTED FROM THE GROUP CONSISTING OF MONOAND DI-HYDRIC ALIPHATIC ALCOHOLS, EACH OF SAID ACIDS AND ALCOHOLS CONTAINING 6-10 CARBON ATOMS IN THEIR RESPECTIVE CHAINS AND RINGS, AT A TEMPERATURE OF 20 TO 200* C., FOR AT LEAST ABOUT 15 MINUTES, THE PROPORTION BY WEIGHT OF ALUMINA BROUGHT INTO CONTACT WITH THE PLASTICIZER BEING AT LEAST ABOUT 10%, AND SEPARATING THE ALUMINA AND PLASTICIZER AND RECOVERING THE PLASTICIZER HAVING IMPROVED CHARACTERISTICS INCLUDING INCREASED ELECTRICAL RESISTIVITY.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1960-01-08 | 1960-07-09 | 1961-01-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-08 | 1964-07-09 | 1965-01-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-08 | 1968-07-09 | 1969-01-08 | $7700.00 | Window Closed / Lapsed |