US2673192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chlorate-sulfite redox-initiated aqueous polymerization of vinyl derivatives
Assignee: Diamond Shamrock Corp
•
Filing: 1950-11-10
•
Granted: 1954-03-23
•
Expires: 1970-11-10
Abstract
No abstract record available.
Inventors
- 👤 Hill Archie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:41
CPC Classifications
C; C08; C08F; C08F4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD OF POLYMERIZING MONOETHYLENICALLY-UNSATURATED, POLYMERIZABLE, ORGANIC COMPOUNDS OF THE CLASS HAVING A TERMINAL ETHYLENIC DOUBLE BOND, WHICH INCLUDES THE STEPS OF DISPERSING 1 PART OF BY WEIGHT OF A MATERIAL OF SAID CLASS IN NOT MORE THAN 4 PARTS BY WEIGHT OF AN AQUEOUS ACIDIC MEDIUM INCLUDING A MIXTURE OF WATER, SULFITE IONS, AND CLORATE IONS, SAID SULFITE IONS BEING IN EXCESS OF THE EQUIVALENT MOLECULAR PROPORTION OF SAID CHLORATE IONS, MAINTAINING THE PH OF SAID MEDIUM SUBSTANTIALLY WITHIN THE RANGE OF 2-6.5 DURING THE POLYMERIZATION REACTION, AND RECOVERING A HOMOPOLYMER OF SAID CLASS FROM SAID MEDIUM.
Claim 2
Independent Claim
98 words
THE METHOD OF POLYMERIZING MONOETHYLENICALLY-UNSATURATED, POLYMERIZABLE, ORGANIC COMPOUNDS OF THE CLASS HAVING A TERMINAL ETHYLENIC DOUBLE BOND, WHICH INCLUDES THE STEPS OF DISPERSING 1 PART OF BY WEIGHT OF A MATERIAL OF SAID CLASS IN NOT MORE THAN 4 PARTS BY WEIGHT OF AN AQUEOUS ACIDIC MEDIUM INCLUDING A MIXTURE OF WATER, SULFITE IONS, AND CLORATE IONS, SAID SULFITE IONS BEING IN EXCESS OF THE EQUIVALENT MOLECULAR PROPORTION OF SAID CHLORATE IONS, MAINTAINING THE PH OF SAID MEDIUM SUBSTANTIALLY WITHIN THE RANGE OF 2-6.5 DURING THE POLYMERIZATION REACTION, AND RECOVERING A HOMOPOLYMER OF SAID CLASS FROM SAID MEDIUM.
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) | 1957-03-22 | 1957-09-21 | 1958-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-22 | 1961-09-21 | 1962-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-22 | 1965-09-21 | 1966-03-23 | $7700.00 | Window Closed / Lapsed |