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US3905913A
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Catalyst system for the homo- and co-polymerization of olefins, conjugated or unconjugated dienes
Assignee: SnamProgetti SpA
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Filing: 1973-09-10
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Granted: 1975-09-16
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Expires: 1993-09-10
Abstract
Abstract A new catalyst system, for the homo- and copolymerization of olefins, conjugated or unconjugated dienes or mixtures thereof, is composed of a Ziegler catalyst transition metal compound and an aluminum compound having the general formula: wherein X is hydrogen or halogen; both R''s are hydrocarbon radicals; and R'' is an unsaturated or saturated aliphatic divalent hydrocarbon radical, unsubstituted cycloalkyl radical or unsubstituted aryl radical.
Inventors
- 👤 Margherita Corbellini
- 👤 Agostino Balducci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:47
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07; C07F; C07F5/00; C07F5/06; C07F5/069; C08F10/00
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
45 words
A CATALYST SYSTEM USEFUL FOR THE HOMO- AND CO-POLYMERIZATION OF OLEFINS, CONJUGATED AND UNCONJUGATED DIENES OR MIXTURES OF SAID UNSTURATED COMPOUNDS CONSISTING ESSENTIALLY OF A TRANSITION METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TICL3 AND TICL4 AND AN ALUMINUM COMPOUND HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
45 words
A CATALYST SYSTEM USEFUL FOR THE HOMO- AND CO-POLYMERIZATION OF OLEFINS, CONJUGATED AND UNCONJUGATED DIENES OR MIXTURES OF SAID UNSTURATED COMPOUNDS CONSISTING ESSENTIALLY OF A TRANSITION METAL COMPOUND SELECTED FROM THE GROUP CONSISTING OF TICL3 AND TICL4 AND AN ALUMINUM COMPOUND HAVING THE GENERAL FORMULA:
Claim 3
Dependent Claim
35 words
A catalyst system as claimed in claim 1, wherein the group R'' in the general formula of the aluminum compound represents -(CH2)n- wherein n is a whole number in the range between 2 and 6.
Claim 4
Dependent Claim
14 words
A catalyst system as claimed in claim 1, wherein the aluminum compound is NN''-diethylethylenediamidodialane.
Claim 5
Dependent Claim
14 words
A catalyst system as claimed in claim 1, wherein the aluminum compound is NN''-diethylpropylenediamidodialane.
Claim 6
Dependent Claim
14 words
A catalyst system as claimed in claim 1, wherein the aluminum compound is NN''-diethylhexamethylenediamidodialane.
Claim 7
Dependent Claim
14 words
A catalyst system as claimed in claim 1 wherein the aluminum compound is NN''-diisopropylethylenediamidodialane.
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) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |