US3687920A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymerization of olefins with silane modified catalyst system
Assignee: Union Carbide Corp
•
Filing: 1971-01-25
•
Granted: 1972-08-29
•
Expires: 1991-01-25
Abstract
Abstract Silane compounds of the structure H3Si(SiH2)mH and R4 nSiHn wherein m is 0 to 3 inclusive, n is 0 to 3 inclusive and R is C1 to C10 hydrocarbon are used with supported bis(cyclopentadienyl)chromium (II) catalysts for the polymerization of olefins in order to improve the productivity of the catalyst.
Inventors
- 👤 Robert N Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 08:56
CPC Classifications
C; C08; C08F; C08F10/00; Y; Y10; Y10S; Y10S526/00; Y10S526/901; Y10S526/905
Claims Analysis
Total Claims: 74
Claim 1
Independent Claim
15 words
A process as in claim 1 in which said silane compound has the structure H3Si(SiH2)mH
Claim 2
Dependent Claim
13 words
A process as in claim 2 in which said silane compound is SiH4.
Claim 3
Dependent Claim
13 words
A process as in claim 3 in which said monomer charge comprises ethylene.
Claim 4
Dependent Claim
11 words
A process as in claim 4 in which ethylene is homopolymerized.
Claim 5
Dependent Claim
16 words
A process as in claim 1 in which said silane compound has the structure R4 nSiHn
Claim 6
Dependent Claim
13 words
A process as in claim 6 in which said monomer charge comprises ethylene.
Claim 7
Dependent Claim
11 words
A process as in claim 7 in which ethylene is homopolymerized.
Claim 8
Dependent Claim
18 words
A process as in claim 7 in which ethylene is interpolymerized with at least one other alpha olefin.
Claim 9
Dependent Claim
13 words
A process as in claim 9 in which ethylene is interpolymerized with propylene.
Claim 10
Dependent Claim
13 words
A process as in claim 9 in which ethylene is interpolymerized with butene-1.
Claim 11
Dependent Claim
11 words
A process as in claim 6 in which n is 0.
Claim 12
Dependent Claim
14 words
A process as in claim 12 in which the silane compound comprises tetraethyl silane.
Claim 13
Dependent Claim
11 words
A process as in claim 6 in which n is 1.
Claim 14
Dependent Claim
14 words
A process as in claim 14 in which the silane compound comprises triethyl silane.
Claim 15
Dependent Claim
15 words
A process as in claim 14 in which the silane compound comprises methyl diethyl silane.
Claim 16
Dependent Claim
14 words
A process as in claim 14 in which the silane compound comprises trihexyl silane.
Claim 17
Dependent Claim
11 words
A process as in claim 6 in which n is 2.
Claim 18
Dependent Claim
14 words
A process as in claim 18 in which the silane compound comprises diethyl silane.
Claim 19
Dependent Claim
11 words
A process as in claim 6 in which n is 3.
Claim 20
Dependent Claim
14 words
A process as in claim 20 in which the silane compound comprises butyl silane.
Claim 21
Dependent Claim
14 words
A process as in claim 20 in which the silane compound comprises phenyl silane.
Claim 22
Dependent Claim
25 words
A process as in claim 1 in which about 0.1 to 50 moles of said silane compound are used per mole of the organochromium compound.
Claim 23
Dependent Claim
14 words
A process as in claim 1 which is conducted in an inert solvent medium.
Claim 24
Dependent Claim
13 words
A process as in claim 24 which is conducted under slurry polymerization conditions.
Claim 25
Dependent Claim
13 words
A process as in claim 24 which is conducted under solution polymerization conditions.
Claim 26
Dependent Claim
14 words
A process as in claim 1 which is conducted in a fluid bed reactor.
Claim 27
Dependent Claim
35 words
In a process for polymerizing a monomer charge comprising at least one alpha olefin by contacting it with at least one bis(cyclopentadienyl)chromium (II) compound supported on inorganic oxide, said bis(cyclopenTadienyl)chromium (II) compound having the structure
Claim 28
Dependent Claim
11 words
A process as in claim 28 in which n'' is 0.
Claim 29
Dependent Claim
15 words
A process as in claim 29 in which the silane compound has the structure H3Si(SiH2)mH
Claim 30
Dependent Claim
13 words
A process as in claim 30 in which the silane compound comprises silane.
Claim 31
Dependent Claim
13 words
A process as in claim 31 in which the inorganic oxide comprises silica.
Claim 32
Dependent Claim
13 words
A process as in claim 32 in which said monomer charge comprises ethylene.
Claim 33
Dependent Claim
11 words
A process as in claim 33 in which ethylene is homopolymerized.
Claim 34
Dependent Claim
16 words
A process as in claim 29 in which the silane compound has the structure R4 nSiHn
Claim 35
Dependent Claim
13 words
A process as in claim 35 in which the monomer charge comprises ethylene.
Claim 36
Dependent Claim
10 words
A process in claim 36 in which ethylene is homopolymerized.
Claim 37
Dependent Claim
13 words
A process as in claim 36 in which ethylene is interpolymerized with propylene.
Claim 38
Dependent Claim
13 words
A process as in claim 36 in which ethylene is interpolymerized with butene-1.
Claim 39
Dependent Claim
14 words
A process as in claim 35 in which the silane compound comprises diethyl silane.
Claim 40
Dependent Claim
14 words
A process as in claim 35 in which the silane compound comprises triethyl silane.
Claim 41
Dependent Claim
15 words
A process as in claim 35 in which the silane compound comprises methyl diethyl silane.
Claim 42
Dependent Claim
14 words
A process as in claim 35 in which the silane compound comprises phenyl silane.
Claim 43
Dependent Claim
14 words
A process as in claim 35 in which the silane compound comprises butyl silane.
Claim 44
Dependent Claim
14 words
A process as in claim 35 in which the silane compound comprises trihexyl silane.
Claim 45
Dependent Claim
14 words
A process as in claim 35 in which the silane compound comprises tetraethyl silane.
Claim 46
Dependent Claim
51 words
An olefin polymerization catalyst which comprises inorganic oxide supported bis(cyclopentadienyl)chromium (II) modified with silane compound having the structure H3Si(SiH2)mH or R4 nSiHn wherein m is an integer from 0 to 3, inclusive, n is an integer from 0 to 3, inclusive, and R is a C1 to C10, inclusive, hydrocarbon radical.
Claim 47
Dependent Claim
25 words
A catalyst as in claim 47 in which said inorganic oxide is selected from the group consisting of silica, alumina, thoria, zirconia and mixtures thereof.
Claim 48
Dependent Claim
15 words
A catalyst as in claim 48 in which the silane compound has the structure H3Si(SiH2)mH
Claim 49
Dependent Claim
13 words
A catalyst as in claim 49 in which the silane compound comprises silane.
Claim 50
Dependent Claim
14 words
A catalyst as in claim 50 in which the inorganic oxide support comprises silica.
Claim 51
Dependent Claim
16 words
A catalyst as in claim 48 in which the silane compound has the structure R4 nSiHn
Claim 52
Dependent Claim
14 words
A catalyst as in claim 52 in which the inorganic oxide support comprises silica.
Claim 53
Dependent Claim
11 words
A catalyst as in claim 53 in which n is 0.
Claim 54
Dependent Claim
14 words
A catalyst as in claim 54 in which the silane compound comprises tetraethyl silane.
Claim 55
Dependent Claim
11 words
A catalyst as in claim 53 in which n is 1.
Claim 56
Dependent Claim
14 words
A catalyst as in claim 56 in which the silane compound comprises triethyl silane.
Claim 57
Dependent Claim
15 words
A catalyst as in claim 56 in which the silane compound comprises methyl diethyl silane.
Claim 58
Dependent Claim
14 words
A catalyst as in claim 56 in which the silane compound comprises trihexyl silane.
Claim 59
Dependent Claim
11 words
A catalyst as in claim 53 in which n is 2.
Claim 60
Dependent Claim
14 words
A catalyst as in claIm 60 in which the silane compound comprises diethyl silane.
Claim 61
Dependent Claim
11 words
A catalyst as in claim 53 in which n is 3.
Claim 62
Dependent Claim
14 words
A catalyst as in claim 62 in which the silane compound comprises butyl silane.
Claim 63
Dependent Claim
14 words
A catalyst as in claim 62 in which the silane compound comprises phenyl silane.
Claim 64
Dependent Claim
14 words
A catalyst as in claim 52 in which the inorganic oxide support comprises alumina.
Claim 65
Dependent Claim
14 words
A catalyst as in claim 65 in which the inorganic oxide support comprises silica-alumina.
Claim 66
Dependent Claim
11 words
A catalyst as in claim 66 in which n is 1.
Claim 67
Dependent Claim
14 words
A catalyst as in claim 67 in which the silane compound comprises triethyl silane.
Claim 68
Dependent Claim
15 words
A catalyst as in claim 67 in which the silane compound comprises methyl diethyl silane.
Claim 69
Dependent Claim
23 words
A catalyst as in claim 47 which comprises about 0.1 to 50 moles of said silane compound per mole of said chromium compound.
Claim 70
Dependent Claim
47 words
In a process for polymerizing a monomer charge comprising at least one alpha olefin by contacting it with at least one bis(cyclopentadienyl)chromium (II) compound supported on an inorganic oxide support, the improvement which comprises modifying said catalyst, prior to said contact, with at least one hydrocarbyl silane.
Claim 71
Dependent Claim
14 words
A process as in claim 71 which is conducted in an inert solvent medium.
Claim 72
Dependent Claim
13 words
A process as in claim 72 which is conducted under slurry polymerization conditions.
Claim 73
Dependent Claim
13 words
A process as in claim 72 which is conducted under solution polymerization conditions.
Claim 74
Dependent Claim
14 words
A process as in claim 72 which is conducted in a fluid bed reactor.
References Cited (Backward Citations)
DE1214407B
Cited
FR1591425A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-29 | 1976-02-28 | 1976-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-29 | 1980-02-28 | 1980-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-29 | 1984-02-28 | 1984-08-29 | $7700.00 | Window Closed / Lapsed |