US3141864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of polymerizates or mixed polymerizates of acrolein and methacrolein
Assignee: Evonik Operations GmbH
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Filing: 1960-06-03
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Granted: 1964-07-21
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Expires: 1980-06-03
Abstract
No abstract record available.
Inventors
- 👤 Rink Karl Heinz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:50
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/14; C08G2/18; C08G2/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A PROCESS FOR THE PRODUCTION OF HOMOPOLYMERIZATION PRODUCTS FROM AN ACROLEIN COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN IN THE PRESENCE OF A REDOX POLYMERIZATION CATALYST SYSTEM, THE STEP COMPRISING CONDUCTING THE POLYMERIZATION IN A LIQUID MEDIUM IN THE PRESENCE OF 10 TO 100 MOL PERCENT OF HYDROGEN PEROXIDE BASED UPON SAID ACROLEIN COMPOUND TO PRODUCE A POLYMERIZATION PRODUCT IN WHICH ABOUT 10 TO 100% OF THE ALDEHYDE GROUPS SUPPLIED BY THE ACROLEIN COMPOUND HAVE BEEN OXIDIZED TO CARBOXYL GROUPS.
Claim 2
Dependent Claim
84 words
IN A PROCESS FOR THE PRODUCTION OF HOMOPOLYMERIZATION PRODUCTS FROM AN ACROLEIN COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND METHACROLEIN IN THE PRESENCE OF A REDOX POLYMERIZATION CATALYST SYSTEM, THE STEP COMPRISING CONDUCTING THE POLYMERIZATION IN A LIQUID MEDIUM IN THE PRESENCE OF 10 TO 100 MOL PERCENT OF HYDROGEN PEROXIDE BASED UPON SAID ACROLEIN COMPOUND TO PRODUCE A POLYMERIZATION PRODUCT IN WHICH ABOUT 10 TO 100% OF THE ALDEHYDE GROUPS SUPPLIED BY THE ACROLEIN COMPOUND HAVE BEEN OXIDIZED TO CARBOXYL GROUPS.
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) | 1967-07-21 | 1968-01-20 | 1968-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-21 | 1972-01-20 | 1972-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-21 | 1976-01-20 | 1976-07-21 | $7700.00 | Window Closed / Lapsed |