US3386975A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Terpolymers of a polycyclic diolefin and two mono-olefins
Assignee: Snam SpA
•
Filing: 1964-05-22
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Granted: 1968-06-04
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Expires: 1984-05-22
Abstract
No abstract record available.
Inventors
- 👤 Marconi Walter
- 👤 Cesca Sebastiano
- 👤 Fortuna Giorgio Della
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:23
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; C08F210/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
144 words
PROCESS FOR THE PREPARATION OF LINEAR, AMORPHOUS, UNSATURATED TERPOLYMERS COMPRISING TWO MONO-OLEFINIC MONOMERS AND A POLYCYCLIC DIOLEFINE HAVING AN ENDOMETHYLENIC BRIDGE WHICH TERPOLYMER CAN BE VULCANIZED, WHEREIN THE MONOMERS ARE BROUGHT IN CONTACT WITH A BINARY CATALYST SYSTEM WHEREIN THE COMPONENTS ARE SELECTED IN THE FOLLOWING CLASSES: (A) TRANSITION METAL COMPOUND OF THE IVA AND VA GROUP OF THE PERIODIC SYSTEM ACCORDING TO MEMDELEEFF; (B) ALUMINUM HYDRIDES, SOLUBLE IN ORGANIC SOLVENTS, SAID ALUMINUM HYDRIDE BEING COMPLEXED WITH A LEWIS BASE OR HAVING A SECONDARY AMINIC RADICAL, AS DEFINED BELOW, DIRECTLY ATTACHED TO A1, SAID ALUMINUM HYDRIDE HAVING THE GENERAL FORMULA HA1XY, WHEREIN X AND Y, EQUAL OR DIFFERENT, ARE EACH A HYDROGEN ATOM, A HALOGEN ATOM OR A SECONDARY AMINIC RADICAL OF THE TYPE-NR1R2 WHEREIN R1 AND R2, EQUAL OR DIFFERENT, ARE EACH ALKYLS, ARYLS, ALKYLARYLS, CYCLOALKYLS OR PART OF A NITROGEN-CONTAINING HETEROCYCLIC NUCLEUS.
Claim 2
Dependent Claim
144 words
PROCESS FOR THE PREPARATION OF LINEAR, AMORPHOUS, UNSATURATED TERPOLYMERS COMPRISING TWO MONO-OLEFINIC MONOMERS AND A POLYCYCLIC DIOLEFINE HAVING AN ENDOMETHYLENIC BRIDGE WHICH TERPOLYMER CAN BE VULCANIZED, WHEREIN THE MONOMERS ARE BROUGHT IN CONTACT WITH A BINARY CATALYST SYSTEM WHEREIN THE COMPONENTS ARE SELECTED IN THE FOLLOWING CLASSES: (A) TRANSITION METAL COMPOUND OF THE IVA AND VA GROUP OF THE PERIODIC SYSTEM ACCORDING TO MEMDELEEFF; (B) ALUMINUM HYDRIDES, SOLUBLE IN ORGANIC SOLVENTS, SAID ALUMINUM HYDRIDE BEING COMPLEXED WITH A LEWIS BASE OR HAVING A SECONDARY AMINIC RADICAL, AS DEFINED BELOW, DIRECTLY ATTACHED TO A1, SAID ALUMINUM HYDRIDE HAVING THE GENERAL FORMULA HA1XY, WHEREIN X AND Y, EQUAL OR DIFFERENT, ARE EACH A HYDROGEN ATOM, A HALOGEN ATOM OR A SECONDARY AMINIC RADICAL OF THE TYPE-NR1R2 WHEREIN R1 AND R2, EQUAL OR DIFFERENT, ARE EACH ALKYLS, ARYLS, ALKYLARYLS, CYCLOALKYLS OR PART OF A NITROGEN-CONTAINING HETEROCYCLIC NUCLEUS.
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) | 1971-06-04 | 1971-12-04 | 1972-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-06-04 | 1975-12-04 | 1976-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-06-04 | 1979-12-04 | 1980-06-04 | $7700.00 | Window Closed / Lapsed |