Patent US3200096A successfully refreshed from Google Patents.
US3200096A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic polymerization of trioxane
Assignee: Celanese Corp
•
Filing: 1960-11-08
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Granted: 1965-08-10
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Expires: 1980-11-08
Abstract
No abstract record available.
Inventors
- 👤 Donald E Hudgin
- 👤 Frank M Berardinelli
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:35
CPC Classifications
C; C08; C08G; C08G2/00; C08G2/06; C08G2/10; C08G2/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A PROCESS FOR PREPARING TOUGH, HIGH MOLECULAR WEIGHT OXYMETHYLENE POLYMERS WHICH COMPRISES POLYMERIZING TRIOXANE IN THE PRESENCE OF A DILUENT BY AN ADDITION OF POLYMERIZATION PROCESS IN A SUBSTANTIALLY ANHYDROUS REACTION ZONE, WHEREIN SAID TRIOXANE IS IN CONTACT WITH A CATALYTIC AMOUNT OF A PREFORMED COORDINATE COMPLEX OF BORON FLUORIDE WITH WATER, SAID COMPLEX BEING PRESENT IN AN AMOUNT SUCH THAT THE BORON FLUORIDE CONTENT IS FROM ABOUT 0.001 TO ABOUT 1.0 WEIGHT PERCENT BASED ON THE WEIGHT OF TRIOXANE.
Claim 2
Dependent Claim
80 words
A PROCESS FOR PREPARING TOUGH, HIGH MOLECULAR WEIGHT OXYMETHYLENE POLYMERS WHICH COMPRISES POLYMERIZING TRIOXANE IN THE PRESENCE OF A DILUENT BY AN ADDITION OF POLYMERIZATION PROCESS IN A SUBSTANTIALLY ANHYDROUS REACTION ZONE, WHEREIN SAID TRIOXANE IS IN CONTACT WITH A CATALYTIC AMOUNT OF A PREFORMED COORDINATE COMPLEX OF BORON FLUORIDE WITH WATER, SAID COMPLEX BEING PRESENT IN AN AMOUNT SUCH THAT THE BORON FLUORIDE CONTENT IS FROM ABOUT 0.001 TO ABOUT 1.0 WEIGHT PERCENT BASED ON THE WEIGHT OF TRIOXANE.
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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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |