US2525628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of organic peroxide polymerization catalysts
Assignee: EIDP Inc
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Filing: 1946-08-02
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Granted: 1950-10-10
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Expires: 1966-08-02
Abstract
No abstract record available.
Inventors
- 👤 James H Young
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:34
CPC Classifications
C; C08; C08F; C08F18/00; C08F18/02; C08F18/04; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
A PROCESS FOR PREPARING A COMPOSITION USEFUL AS A CATALYST FOR POLYMERIZING VINYL ESTERS OF CARBOXYLIC ACIDS COMPRISING REACTING AT A TEMPERATURE OF 0 TO 40*C. AN EXCESS OF A LIQUID, WATER-IMMISCIBLE MONOMERIC VINYL ESTER OF A MONOCARBOXYLIC ACID WITH AN AQUEOUS SOLUTION OF AN INORGANIC PEROXYGEN COMPOUND HAVING A PH OF AT LEAST 7 AND CONTAINING AT LEAST 0.1% BY WEIGHT OF SAID PEROXYGEN COMPOUND, EMPLOYING IMMISCIBLE PROPORTIONS OF SAID LIQUID ESTER AND SAID SOLUTION, AND SEPARATING FROM THE REACTION MIXTURE THE LIQUID MONOMERIC ESTER PHASE CONTAINING AN ACTIVE ORGANIC PEROXIDE COMPOUND DISSOLVED THEREIN.
Claim 2
Dependent Claim
95 words
A PROCESS FOR PREPARING A COMPOSITION USEFUL AS A CATALYST FOR POLYMERIZING VINYL ESTERS OF CARBOXYLIC ACIDS COMPRISING REACTING AT A TEMPERATURE OF 0 TO 40*C. AN EXCESS OF A LIQUID, WATER-IMMISCIBLE MONOMERIC VINYL ESTER OF A MONOCARBOXYLIC ACID WITH AN AQUEOUS SOLUTION OF AN INORGANIC PEROXYGEN COMPOUND HAVING A PH OF AT LEAST 7 AND CONTAINING AT LEAST 0.1% BY WEIGHT OF SAID PEROXYGEN COMPOUND, EMPLOYING IMMISCIBLE PROPORTIONS OF SAID LIQUID ESTER AND SAID SOLUTION, AND SEPARATING FROM THE REACTION MIXTURE THE LIQUID MONOMERIC ESTER PHASE CONTAINING AN ACTIVE ORGANIC PEROXIDE COMPOUND DISSOLVED THEREIN.
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) | 1953-10-09 | 1954-04-10 | 1954-10-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-09 | 1958-04-10 | 1958-10-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-09 | 1962-04-10 | 1962-10-10 | $7700.00 | Window Closed / Lapsed |