US3684782A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Manufactured shaped articles of unsaturated olefinic copolymers
Assignee: Individual
•
Filing: 1968-09-11
•
Granted: 1972-08-15
•
Expires: 1988-09-11
Abstract
Abstract The invention provides manufactured shaped articles, more particularly elastic films and fibers, having excellent characteristics. The articles are transformation products of certain terpolymers of ethylene, propylene, and hydrocarbon monomers containing at least two double bonds, which terpolymers contain, by mols, 70-85 percent ethylene, 15-30 percent propylene, and 0.05-3 percent of the polyene, have a molecular weight above 20,000, and are amorphous in the relaxed state but crystallize under stretching, more particularly after vulcanization.
Inventors
- 👤 Paolo Longi
- 👤 Alberto Valvassori
- 👤 Francesco Greco
- 👤 Ermanno Bernasconi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:38
CPC Classifications
C; C08; C08F; C08F210/00; C08L; C08L23/00; C08L23/02; C08L23/16
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
50 words
Manufactured, elastic fibers and films according to claim 1, obtained by shaping a terpolymer of ethylene, propylene, and hydrocarbon monomer selected from the group consisting of non-conjugated aliphatic polyenes, alkenylcycloalkenes, polycyclic endomethylenic polyenes, polycyclic polyenes having condensed rings each pair of which has two carbon atoms in common, and polyalkenylcycloalkanes.
Claim 2
Dependent Claim
22 words
Manufactured, elastic fibers and films according to claim 1, obtained by shaping a terpolymer of ethylene, propylene, and a non-conjugated aliphatic polyene.
Claim 3
Dependent Claim
20 words
Manufactured, elastic fibers and films according to claim 1, obtained by shaping a terpolymer of ethylene, propylene, and an alkenylcycloalkane.
Claim 4
Dependent Claim
22 words
Manufactured, elastic fibers and films according to claim 1, obtained by shaping a terpolymer of ethylene, propylene, and a polycyclic endomethylenic polyene.
Claim 5
Dependent Claim
34 words
Manufactured, elastic fibers and films according to claim 1, obtained by shaping a terpolymer of ethylene, propylene, and a polycyclic polyene containing condensed rings each pair of which has two carbon atoms in common.
Claim 6
Dependent Claim
19 words
Manufactured, elastic fibers and films according to claim 1, obtained by shaping a terpolymer of ethylene, propylene, and polyalkenylcycloalkane.
Claim 7
Dependent Claim
19 words
Manufactured, elastic fibers and films according to claim 1, obtained by shaping a terpolymer of ethylene, propylene, and methyltetrahydroindene.
Claim 8
Dependent Claim
19 words
Manufactured, elastic fibers and films according to clAim 1, obtained by shaping a terpolymer of ethylene, propylene and 5,7-dimethyloctadiene-1,6.
Claim 9
Dependent Claim
19 words
Manufactured, elastic fibers and films according to claim 1, obtained by shaping a terpolymer of ethylene, propylene and 4-vinylcyclohexane-1.
References Cited (Backward Citations)
US3300459A
Cited
US3106442A
Cited
US3000866A
Cited
GB957070A
Cited
US3162620A
Cited
US3225019A
Cited
US3378606A
Cited
US3509116A
Cited
US3592881A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |