US3260708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric olefinic copolymers and process for producing the same
Assignee: Montedison SpA
•
Filing: 1962-10-16
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Granted: 1966-07-12
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Expires: 1982-10-16
Abstract
No abstract record available.
Inventors
- 👤 Natta Giulio
- 👤 Mazzanti Giorgio
- 👤 Valvassori Alberto
- 👤 Sartori Guido
- 👤 Cameli Nazzareno
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:14
CPC Classifications
C; C08; C08F; C08F10/00; C08F210/00; C08F232/00; C08F232/02; C08F232/06; C08F236/00; C08F236/02; C08F236/04; C08F236/14; C08F236/16; C08F36/00; C08G; C08G61/00; C08G61/02; C08G61/04; C08G61/06; C08G61/08; Y; Y10; Y10S; Y10S526/00; Y10S526/902
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
20 words
SULFUR-VULCANIZABLE, SUBSTANTIALLY LINEAR, AMORPHOUS, HIGH MOLECULAR WEIGHT COPOLYMERS OF (1) ETHYLENE, (2) AT LEAST ONE ALIPHATIC ALPHA-OLEFIN HAVING THE FORMULA
Claim 2
Dependent Claim
20 words
SULFUR-VULCANIZABLE, SUBSTANTIALLY LINEAR, AMORPHOUS, HIGH MOLECULAR WEIGHT COPOLYMERS OF (1) ETHYLENE, (2) AT LEAST ONE ALIPHATIC ALPHA-OLEFIN HAVING THE FORMULA
Claim 3
Dependent Claim
149 words
THE PROCESS FOR PREPARING SULFUR-VULCANIZABLE, SUBSTANTIALLY LINEAR COPOLYMERS AS DEFINED IN CLAIM 1, WHICH PROCESS COMPRISES POLYMERIZING A MIXTURE OF THE MONOMERS (1), (2) AND (3) IN A LIQUID PHASE, IN CONTACT WITH A CATALYST OBTAINED BY MIXING (1) A VANADIUM COMPOUND SELECTED FROM THE GROUP CONSISTING OF (A) VANADIUM HALIDES AND VANADIUM OXYHALIDES, AND (B) VANAIDUM COMPOUNDS IN WHICH AT LEAST ONE OF THE VANADIUM VALENCES IS SATISFIED BY A HETEROATOM SELECTED FROM THE GROUP CONSISTING OF OXYGEN AND NITROGEN LINKED TO AN ORGANIC GROUP, WITH (2) A SECOND CATALYST-FORMING COMPONENT SELECTED FROM THE GROUP CONSISTING OF ORGANOMETALLIC COMPOUNDS OF METALS BELONGING TO GROUPS I TO III INCLUSIVE OF THE MENDELEEF PERIODIC TABLE, HYDRIDES OF SAID METALS, COMPLEX ORGANO-METALLIC COMPOUNDS OF SAID METALS, AND COMPLEX HYDRIDES OF SAID METALS, THE SECOND CATALYST-FORMING COMPONENT (2) CONTAINING HALOGEN AT LEAST WHEN COMPONENT (1) IS A VANADIUM COMPOUND OF TYPE (B).
References Cited (Backward Citations)
US3033835A
Cited
US3000866A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-11 | 1970-01-10 | 1970-07-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-11 | 1974-01-10 | 1974-07-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-11 | 1978-01-10 | 1978-07-12 | $7700.00 | Window Closed / Lapsed |