US5264405A
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Monocyclopentadienyl titanium metal compounds for ethylene-α-olefin-copolymer production catalysts
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1992-03-13
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Granted: 1993-11-23
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Expires: 2012-03-13
Abstract
Abstract The invention is a catalyst system including a monocyclopentadienyl titanium compound and an alumoxane component which is highly productive for polymerizing ethylene and α-olefins to produce a high molecular weight ethylene-α-olefin copolymer having a high content of α-olefin.
Inventors
- 👤 Jo Ann M. Canich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:31
CPC Classifications
C; C08; C08F; C08F210/00; C08F210/16; C07; C07F; C07F17/00; C07F7/00; C07F7/02; C07F7/08; C07F7/10; C08F10/00; C08F10/04; C08F10/06; C08F110/00; C08F110/02; C08F110/04; C08F110/06; C08F210/04; C08F210/06; C08F210/18; C08F4/00; C08F4/42; C08F4/44; C08F4/60; C08F4/62; C08F4/64; C08F4/659; C08F4/65908; C08F4/65912; C08F4/6592; Y; Y10; Y10S; Y10S526/00; Y10S526/943
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
145 words
A catalyst system comprising: (A) a transition metal component of the formula ##STR7## wherein R 1 and R 2 are each independently a hydrocarbyl radical, each Q and Q' is independently a halide or a C 1 -C 20 hydrocarbyl radical, R' is an aliphatic or alicyclic hydrocarbyl radical of the formula (C n H 2n +b) wherein "n" is a number from 3 to 20 and "b" is +1 for aliphatic and -1 for alicyclic ligands, and R' is covalently bonded to the nitrogen atom through a 1° or 2° carbon atom, L is a neutral Lewis base where "w" denotes a number from 0 to 3 and each R is, independently a C 1-4 hydrocarbyl radical or hydrogen, x is 0, 1, 2, 3 or 4, and two adjacent R groups may join to form a C 4-10 ring; and (b) an alumoxane.
Claim 2
Dependent Claim
145 words
A catalyst system comprising: (A) a transition metal component of the formula ##STR7## wherein R 1 and R 2 are each independently a hydrocarbyl radical, each Q and Q' is independently a halide or a C 1 -C 20 hydrocarbyl radical, R' is an aliphatic or alicyclic hydrocarbyl radical of the formula (C n H 2n +b) wherein "n" is a number from 3 to 20 and "b" is +1 for aliphatic and -1 for alicyclic ligands, and R' is covalently bonded to the nitrogen atom through a 1° or 2° carbon atom, L is a neutral Lewis base where "w" denotes a number from 0 to 3 and each R is, independently a C 1-4 hydrocarbyl radical or hydrogen, x is 0, 1, 2, 3 or 4, and two adjacent R groups may join to form a C 4-10 ring; and (b) an alumoxane.
Claim 3
Dependent Claim
23 words
The catalyst system of claim 1, wherein R 1 and R 2 are each independently a C 1 to C 6 hydrocarbyl radical.
Claim 4
Dependent Claim
13 words
The catalyst system of claim 2, wherein R' is an alicyclic hydrocarbyl radical.
Claim 5
Dependent Claim
10 words
The catalyst system of claim 3, wherein R' is cyclododecyl.
Claim 6
Dependent Claim
14 words
The catalyst system of claim 4, wherein R 1 and R 2 are methyl.
Claim 7
Dependent Claim
13 words
The catalyst system of claim 5, wherein each Q is chlorine or methyl.
Claim 8
Dependent Claim
145 words
A catalyst system comprising: (A) a transition metal component of the formula ##STR8## wherein R 1 and R 2 are each independently a hydrocarbyl radical, each Q and Q' is independently a halide or a C 1 -C 20 hydrocarbyl radical, R' is an aliphatic or alicyclic hydrocarbyl radical of the formula (C n H 2n +b) wherein "n" is a number from 3 to 20 and "b" is +1 for aliphatic and -1 for alicyclic ligands, and R' is covalently bonded to the nitrogen atom through a 1° or 2° carbon atom, L is a neutral Lewis base where "w" denotes a number from 0 to 3 and each R is, independently a C 1-4 hydrocarbyl radical or hydrogen, x is 0, 1, 2, 3 or 4, and two adjacent R groups may join to form a C 4-10 ring; and (B) an alumoxane.
Claim 9
Dependent Claim
145 words
A catalyst system comprising: (A) a transition metal component of the formula ##STR8## wherein R 1 and R 2 are each independently a hydrocarbyl radical, each Q and Q' is independently a halide or a C 1 -C 20 hydrocarbyl radical, R' is an aliphatic or alicyclic hydrocarbyl radical of the formula (C n H 2n +b) wherein "n" is a number from 3 to 20 and "b" is +1 for aliphatic and -1 for alicyclic ligands, and R' is covalently bonded to the nitrogen atom through a 1° or 2° carbon atom, L is a neutral Lewis base where "w" denotes a number from 0 to 3 and each R is, independently a C 1-4 hydrocarbyl radical or hydrogen, x is 0, 1, 2, 3 or 4, and two adjacent R groups may join to form a C 4-10 ring; and (B) an alumoxane.
Claim 10
Dependent Claim
10 words
The catalyst system of claim 7, wherein R' is cyclododecyl.
Claim 11
Dependent Claim
14 words
The catalyst system of claim 8, wherein R 1 and R 2 are methyl.
Claim 12
Dependent Claim
13 words
The catalyst system of claim 9, wherein each Q is chlorine or methyl.
References Cited (Backward Citations)
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