Patent US3068203A successfully refreshed from Google Patents.
US3068203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of polymerizates of acroleins
Assignee: Evonik Operations GmbH
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Filing: 1959-02-02
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Granted: 1962-12-11
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Expires: 1979-02-02
Abstract
No abstract record available.
Inventors
- 👤 Schweitzer Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:23
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
PROCESS FOR HOMOPOLYMERIZATION OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND ALPHA SUBSTITUTED ACROLEINS WHICH COMPRISES POLYMERIZING AN AQUEOUS EMULSION OF SAID ACROLEIN MONOMER AT A TEMPERATURE OF AT LEAST APPROXIMATELY 0* TO 30*C. IN ADMIXTURE WITH AT YEAST ABOUT 3 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF ACROLEIN MONOMER OF A CATALYST SOLELY CONSISTING OF A SULFUR DIOXIDE COMPOUND OF THE GROUP CONSISTING OF SULFUROUS ACID, SULFUROUS ACID ANHYDRIDE AND SODIUM BISULFITE.
Claim 2
Dependent Claim
78 words
PROCESS FOR HOMOPOLYMERIZATION OF A MONOMER SELECTED FROM THE GROUP CONSISTING OF ACROLEIN AND ALPHA SUBSTITUTED ACROLEINS WHICH COMPRISES POLYMERIZING AN AQUEOUS EMULSION OF SAID ACROLEIN MONOMER AT A TEMPERATURE OF AT LEAST APPROXIMATELY 0* TO 30*C. IN ADMIXTURE WITH AT YEAST ABOUT 3 PARTS BY WEIGHT PER 100 PARTS BY WEIGHT OF ACROLEIN MONOMER OF A CATALYST SOLELY CONSISTING OF A SULFUR DIOXIDE COMPOUND OF THE GROUP CONSISTING OF SULFUROUS ACID, SULFUROUS ACID ANHYDRIDE AND SODIUM BISULFITE.
References Cited (Backward Citations)
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US2212894A
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US2580315A
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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) | 1965-12-10 | 1966-06-11 | 1966-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-10 | 1970-06-11 | 1970-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-10 | 1974-06-11 | 1974-12-11 | $7700.00 | Window Closed / Lapsed |