US3117111A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for producing linear high polymers of acrylonitrile using cocatalyst of metal alkyl with metal alcoholate or acetylacetonate
Assignee: Montedison SpA
•
Filing: 1957-10-03
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Granted: 1964-01-07
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Expires: 1977-10-03
Abstract
No abstract record available.
Inventors
- 👤 Natta Giulio
- 👤 Dall Asta Gino
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 04:34
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/44; C08F2/00; C08F2/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A PROCESS FOR POLYMERIZING ACRYLONITRILE TO LINEAR HIGH MOLECULAR WEIGHT HOMOPOLYMERS CONTAINING CHAIN SECTIONS HAVING A SYNDIOTACTIC CONFIGURATION OF THE MONOMERIC UNITS, WHICH PROCESS COMPRISES POLYMERIZING ACRYLONITRILE IN CONTACT WITH A CATALYST CONSISTING ESSENTIALLY OF THE PRODUCT OBTAINED BY MIXING AN ALKYL COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ZINC AND A COMPOUND OF A TRANSITION METAL SELECTED FROM THE GROUPS CONSISTING OF ALCOHOLATES AND ACETYLACETONATES OF TITANIUM, VANADIUM AND CHROMIUM.
Claim 2
Dependent Claim
76 words
A PROCESS FOR POLYMERIZING ACRYLONITRILE TO LINEAR HIGH MOLECULAR WEIGHT HOMOPOLYMERS CONTAINING CHAIN SECTIONS HAVING A SYNDIOTACTIC CONFIGURATION OF THE MONOMERIC UNITS, WHICH PROCESS COMPRISES POLYMERIZING ACRYLONITRILE IN CONTACT WITH A CATALYST CONSISTING ESSENTIALLY OF THE PRODUCT OBTAINED BY MIXING AN ALKYL COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND ZINC AND A COMPOUND OF A TRANSITION METAL SELECTED FROM THE GROUPS CONSISTING OF ALCOHOLATES AND ACETYLACETONATES OF TITANIUM, VANADIUM AND CHROMIUM.
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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) | 1967-01-06 | 1967-07-08 | 1968-01-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-06 | 1971-07-08 | 1972-01-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-06 | 1975-07-08 | 1976-01-07 | $7700.00 | Window Closed / Lapsed |