US2543306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of styrenes in the presence of alcohol diluents and unsaturated peroxides
Assignee: Distillers Co Yeast Ltd
•
Filing: 1944-08-24
•
Granted: 1951-02-27
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Expires: 1964-08-24
Abstract
No abstract record available.
Inventors
- 👤 Staudinger Hanns Peter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:00
CPC Classifications
C; C08; C08F; C08F12/00; C08F12/02; C08F12/04; Y; Y10; Y10S; Y10S260/00; Y10S260/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PROCESS FOR THE PRODUCTION OF A SYNTHETIC RESIN WHICH COMPRISES POLYMERIZING A COMPOUND OF THE CLASS CONSISTING OF STYRENE AND ALPHAMETHYL STYRENE BY HEATING SAID COMPOUND TO A TEMPERATURE NOT IN EXCESS OF 150* C. IN THE PRESENCE OF A PEROXIDIC CATALYST CONTAINING THE RADICLE OF AN UNSATURATED ORGANIC ACID OF THE GROUP CONSISTING OF CROTONIC AND CINNAMIC ACIDS, AND IN THE PRESENCE OF A DILUENT CONSISTING OF AN ALIPHATIC ALCOHOL CONTAINING NOT MORE THAN FIVE CARBON ATOMS IN THE MOLECULE.
Claim 2
Dependent Claim
82 words
A PROCESS FOR THE PRODUCTION OF A SYNTHETIC RESIN WHICH COMPRISES POLYMERIZING A COMPOUND OF THE CLASS CONSISTING OF STYRENE AND ALPHAMETHYL STYRENE BY HEATING SAID COMPOUND TO A TEMPERATURE NOT IN EXCESS OF 150* C. IN THE PRESENCE OF A PEROXIDIC CATALYST CONTAINING THE RADICLE OF AN UNSATURATED ORGANIC ACID OF THE GROUP CONSISTING OF CROTONIC AND CINNAMIC ACIDS, AND IN THE PRESENCE OF A DILUENT CONSISTING OF AN ALIPHATIC ALCOHOL CONTAINING NOT MORE THAN FIVE CARBON ATOMS IN THE MOLECULE.
References Cited (Backward Citations)
US1683404A
Cited
GB462165A
Cited
US2300566A
Cited
US2366306A
Cited
US2381561A
Cited
US2310961A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-02-26 | 1954-08-28 | 1955-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-02-26 | 1958-08-28 | 1959-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-02-26 | 1962-08-28 | 1963-02-27 | $7700.00 | Window Closed / Lapsed |