US2647878A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of promoting polymerization
Assignee: Individual
•
Filing: 1950-06-15
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Granted: 1953-08-04
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Expires: 1970-06-15
Abstract
No abstract record available.
Inventors
- 👤 Max M Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:27
CPC Classifications
C; C08; C08F; C08F22/00; C08F22/10; C08F22/12; C08F22/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
94 words
IN A METHOD OF POLYMERIZING A COMPOSITION COMPRISING A LIQUID MONOMERIC UNSATURATED COMPOUND IN WHICH THE UNSATURATION IS DUE TO A SINGLE TERMINAL ETHYLENIC GROUP WHICH IS ATTACHED TO A NEGATIVE RADICAL AND WHICH UNSATURATED COMPOUND IS POLYMERIZABLE IN THE PRESENCE OF A PEROXY POLYMERIZATION CATALYST, SAID CATALYST ALSO BEING PRESENT, THAT IMPROVEMENT WHICH CONSISTS IN THE STEP OF ADDING A SMALL BUT EFFECTIVE AMOUNT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1,2,3,4-TETRAHYDROQUINOLINE AND THE N-ALKYL, NHYDROXYETHYL, N-CYANOETHYL, AND 2,7-DIMETHYL SUBSTITUTION DERIVATIVES OF 1,2,3,4 - TETRAHYDROQUINOLINE TO PROMOTE GELATION OF THE COMPOSITION.
Claim 2
Dependent Claim
94 words
IN A METHOD OF POLYMERIZING A COMPOSITION COMPRISING A LIQUID MONOMERIC UNSATURATED COMPOUND IN WHICH THE UNSATURATION IS DUE TO A SINGLE TERMINAL ETHYLENIC GROUP WHICH IS ATTACHED TO A NEGATIVE RADICAL AND WHICH UNSATURATED COMPOUND IS POLYMERIZABLE IN THE PRESENCE OF A PEROXY POLYMERIZATION CATALYST, SAID CATALYST ALSO BEING PRESENT, THAT IMPROVEMENT WHICH CONSISTS IN THE STEP OF ADDING A SMALL BUT EFFECTIVE AMOUNT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 1,2,3,4-TETRAHYDROQUINOLINE AND THE N-ALKYL, NHYDROXYETHYL, N-CYANOETHYL, AND 2,7-DIMETHYL SUBSTITUTION DERIVATIVES OF 1,2,3,4 - TETRAHYDROQUINOLINE TO PROMOTE GELATION OF THE COMPOSITION.
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) | 1956-08-03 | 1957-02-02 | 1957-08-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-08-03 | 1961-02-02 | 1961-08-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-08-03 | 1965-02-02 | 1965-08-04 | $7700.00 | Window Closed / Lapsed |