US4145313A
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Novel trialkyl aluminum cocatalyst
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1977-07-05
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Granted: 1979-03-20
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Expires: 1997-07-05
Abstract
Abstract A new improved catalyst system for alpha-olefin type polymerizations, includes at least one metal alkyl compound having the formula R n MR' 3-n in combination with a Group IVB-VIII transition metal compound on a support and at least one Lewis base wherein R is selected from the group consisting of C 3 to C 20 secondary or tertiary alkyl, cycloalkyl, alkenyl or aralkyl groups; R' is selected from the group consisting of C 1 to C 20 primary alkyl, alkenyl or aralkyl groups, or a hydride, M is selected from the group consisting of aluminum, gallium, or indium; and n = 1-3. The improved catalyst system provides polymers having increased isotactic stereo-regularity as well as lower catalyst residue.
Inventors
- 👤 Arthur W. Langer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:50
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/02; C08F4/022; C08F110/00; C08F110/04; C08F110/06
Claims Analysis
Total Claims: 33
Claim 1
Independent Claim
212 words
An improved catalyst composition adaptable for use in alpha-olefin polymerization which comprises a mixture of: (a) a transition metal compound on a support, said transition metal compound selected from the group consisting of VCl 3 , VBr 3 , TiCl 3 , TiCl 4 , TiBr 3 and TiBr 4 and mixtures thereof; and (b) at least one alkyl metal compound having the formula: R.sub.n MR'.sub.3-n wherein R' is selected from the group consisting of C 1 to C 20 primary alkyl, primary alkenyl, and primary aralkyl groups and hydride; R is attached to M through a secondary or tertiary carbon atom and is selected from the group consisting of C 3 to C 20 secondary and tertiary alkyl, cycloalkyl, alkenyl and aralkyl groups, M is selected from the group consisting of aluminum, gallium and indium and n = 1 to 2, wherein said composition includes at least one Lewis base selected from the group consisting of amines, esters, phosphines, phosphine oxide, phosphates, amides, ketones and ethers, with the proviso that said Lewis base does not cause excessive cleavage of metalcarbon bonds of said R n MR' 3-n or loss of active sites, a molar ratio of said alkyl metal compound to said transition metal compound being about 0.5:1 to about 50:1.
Claim 2
Dependent Claim
212 words
An improved catalyst composition adaptable for use in alpha-olefin polymerization which comprises a mixture of: (a) a transition metal compound on a support, said transition metal compound selected from the group consisting of VCl 3 , VBr 3 , TiCl 3 , TiCl 4 , TiBr 3 and TiBr 4 and mixtures thereof; and (b) at least one alkyl metal compound having the formula: R.sub.n MR'.sub.3-n wherein R' is selected from the group consisting of C 1 to C 20 primary alkyl, primary alkenyl, and primary aralkyl groups and hydride; R is attached to M through a secondary or tertiary carbon atom and is selected from the group consisting of C 3 to C 20 secondary and tertiary alkyl, cycloalkyl, alkenyl and aralkyl groups, M is selected from the group consisting of aluminum, gallium and indium and n = 1 to 2, wherein said composition includes at least one Lewis base selected from the group consisting of amines, esters, phosphines, phosphine oxide, phosphates, amides, ketones and ethers, with the proviso that said Lewis base does not cause excessive cleavage of metalcarbon bonds of said R n MR' 3-n or loss of active sites, a molar ratio of said alkyl metal compound to said transition metal compound being about 0.5:1 to about 50:1.
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein said transition metal compound is TiCl 4 .
Claim 4
Dependent Claim
12 words
The composition of claim 2, wherein said support contains MgCl 2 .
Claim 5
Dependent Claim
14 words
The composition of claim 1, wherein said transition metal compound is TiCl 3 .
Claim 6
Dependent Claim
13 words
The composition of claim 1, wherein said ester is a carboxylic acid ester.
Claim 7
Dependent Claim
9 words
The composition of claim 1, wherein n equals 2.
Claim 8
Dependent Claim
10 words
The composition of claim 2, further including TiCl 3 .
Claim 9
Dependent Claim
55 words
The composition of claim 1, wherein said RMR' 2 is formed from the reaction product of R' 2 MX and RMgX', wherein X is selected from the group consisting of chloride, bromide, or a monovalent anion which cannot initiate polymerization of olefinic monomers and X' is an anion which cannot initiate polymerization of olefinic monomers.
Claim 10
Dependent Claim
17 words
The composition of claim 8, wherein said transition metal compound is TiCl 4 containing MgCl 2 .
Claim 11
Dependent Claim
44 words
The composition of claim 1, wherein R 2 MR' is formed from the reaction product of R 2 Mg and R'MX 2 wherein X is selected from the group consisting of chloride, bromide, or a monovalent anion which cannot initiate polymerization of olefinic monomers.
Claim 12
Dependent Claim
17 words
The composition of claim 10, wherein said transition metal compound is TiCl 4 containing MgCl 2 .
Claim 13
Dependent Claim
140 words
An improved catalyst composition adaptable for use in alpha-olefin polymerization including a mixture of a Lewis base, a Group IVB to VIII transition metal compound on a support, and at least one alkyl metal compound having the formula: R.sub.n MR'.sub.3-n wherein R' is selected from the group comprising C 1 to C 20 primary alkyl, primary alkenyl and primary aralkyl groups and hydride; M is selected from the group consisting of aluminum, gallium and indium and n = 1 to 2, said Lewis base not causing excessive cleavage of metal-carbon bonds of said R n MR' 3-n or loss of active sites, wherein the improvement comprises R is attached to M through a secondary or tertiary carbon atom and being selected from the group consisting of C 3 to C 20 secondary and tertiary alkyl, cycloalkyl, alkenyl, or aralkyl groups.
Claim 14
Dependent Claim
140 words
An improved catalyst composition adaptable for use in alpha-olefin polymerization including a mixture of a Lewis base, a Group IVB to VIII transition metal compound on a support, and at least one alkyl metal compound having the formula: R.sub.n MR'.sub.3-n wherein R' is selected from the group comprising C 1 to C 20 primary alkyl, primary alkenyl and primary aralkyl groups and hydride; M is selected from the group consisting of aluminum, gallium and indium and n = 1 to 2, said Lewis base not causing excessive cleavage of metal-carbon bonds of said R n MR' 3-n or loss of active sites, wherein the improvement comprises R is attached to M through a secondary or tertiary carbon atom and being selected from the group consisting of C 3 to C 20 secondary and tertiary alkyl, cycloalkyl, alkenyl, or aralkyl groups.
Claim 15
Dependent Claim
15 words
The composition of claim 12, wherein said transition metal compound is a transition metal halide.
Claim 16
Dependent Claim
27 words
The composition of claim 13, wherein the halide group of said transition metal halide is selected from the group consisting of chloride or bromide and mixtures thereof.
Claim 17
Dependent Claim
27 words
The composition of claim 14, wherein the metal of said transition metal halide is selected from the group consisting of trivalent titanium, trivalent vanadium and tetravalent titanium.
Claim 18
Dependent Claim
14 words
The composition of claim 12, wherein said transition metal compound is TiCl 4 .
Claim 19
Dependent Claim
12 words
The composition of claim 16, wherein said support contains MgCl 2 .
Claim 20
Dependent Claim
14 words
The composition of claim 12, wherein said transition metal compound is TiCl 3 .
Claim 21
Dependent Claim
25 words
The composition of claim 12, wherein said Lewis base is selected from the group of amines, esters, phosphines, phosphine oxides, phosphates, amides, ketones and ethers.
Claim 22
Dependent Claim
26 words
The composition of claim 17, wherein said Lewis base is selected from the group consisting of amines, esters, phosphines, phosphine oxides, phosphates, amides, ketones and ethers.
Claim 23
Dependent Claim
14 words
The composition of claim 12, wherein said Lewis base is a carboxylic acid ester.
Claim 24
Dependent Claim
9 words
The composition of claim 12, wherein n equals 1.
Claim 25
Dependent Claim
9 words
The composition of claim 12, wherein in equals 2.
Claim 26
Dependent Claim
26 words
The composition according to claim 12, wherein a molar ratio of said alkyl metal compound to said transition metal compound is about 0.5:1 to about 50:1.
Claim 27
Dependent Claim
10 words
The composition of claim 16, further including TiCl 3 .
Claim 28
Dependent Claim
15 words
The composition of claim 14, wherein said R n MR' 3-n is RMR' 2 .
Claim 29
Dependent Claim
55 words
The composition of claim 26, wherein said RMR' 2 is formed from the reaction product of R' 2 MX and RMgX', wherein X is selected from the group consisting of chloride, bromide, or a monovalent anion which cannot initiate polymerization of olefinic monomers and X' is an anion which cannot initiate polymerization of olefinic monomers.
Claim 30
Dependent Claim
17 words
The composition of claim 27, wherein said transition metal compound is TiCl 4 containing MgCl 2 .
Claim 31
Dependent Claim
15 words
The composition of claim 14, wherein said R n MR' 3-n is R 2 MR'.
Claim 32
Dependent Claim
44 words
The composition of claim 29, wherein R 2 MR' is formed from the reaction product of R 2 Mg and R'MX 2 wherein X is selected from the group consisting of chloride, bromide, and a monovalent anion which cannot initiate polymerization of olefinic monomers.
Claim 33
Dependent Claim
17 words
The composition of claim 30, wherein said transition metal compound is TiCl 4 containing MgCl 2 .
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) | 1982-03-19 | 1982-09-18 | 1983-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-03-19 | 1986-09-18 | 1987-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-03-19 | 1990-09-18 | 1991-03-20 | $7700.00 | Window Closed / Lapsed |