US4158642A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Trialkyl aluminum cocatalyst
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1978-04-14
•
Granted: 1979-06-19
•
Expires: 1998-04-14
Abstract
Abstract A new improved catalyst system for alpha-olefin type polymerizations, includes at least one metal alkyl compound having the formula RnMR'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 C3 to C20 secondary or tertiary alkyl, cycloalkyl, alkenyl or aralkyl groups; R' is selected from the group consisting of C1 to C20 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 stereoregularity as well as lower catalyst residue.
Inventors
- 👤 Arthur W. Langer, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 17:10
CPC Classifications
C; C08; C08F; C08F10/00; C08F4/00; C08F4/02; C08F4/022
Claims Analysis
Total Claims: 28
Claim 1
Independent Claim
224 words
An improved catalyst composition adaptable for use in polymerizations which comprises a mixture of: (a) a titanium metal compound on a support, said titanium metal compound selected from the group consisting of TiCl 3 , TiCl 4 , TiBr 3 and TiBr 4 and mixtures thereof; (b) at least one alkyl metal compound having the formula: R n MR' 3-n , wherein R' is selected from the group consisting of C 1 to C 20 primary alkyl, alkenyl and aralkyl groups and hydride, R is selected from the group consisting of a C 3 -C 20 secondary or tertiary alkyl, neopentyl alkyl, cycloalkyl, and a secondary or tertiary alkenyl and aralkyl groups, M is selected from the group consisting of Al, Ga and In, n is equal to 0-2; wherein said composition includes at least one Lewis base with the proviso that said Lewis base does not cause excessive cleavage of metal-carbon bonds 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 200:1; and (c) a salt of a Group IA to Group IIIA metal, said salt being selected from the group consisting of alkoxides, carboxylates, or aryloxides, a concentration of said metal salt being about 0.1 to about 20 moles per mole of said R n MR' 3-n compound.
Claim 2
Dependent Claim
224 words
An improved catalyst composition adaptable for use in polymerizations which comprises a mixture of: (a) a titanium metal compound on a support, said titanium metal compound selected from the group consisting of TiCl 3 , TiCl 4 , TiBr 3 and TiBr 4 and mixtures thereof; (b) at least one alkyl metal compound having the formula: R n MR' 3-n , wherein R' is selected from the group consisting of C 1 to C 20 primary alkyl, alkenyl and aralkyl groups and hydride, R is selected from the group consisting of a C 3 -C 20 secondary or tertiary alkyl, neopentyl alkyl, cycloalkyl, and a secondary or tertiary alkenyl and aralkyl groups, M is selected from the group consisting of Al, Ga and In, n is equal to 0-2; wherein said composition includes at least one Lewis base with the proviso that said Lewis base does not cause excessive cleavage of metal-carbon bonds 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 200:1; and (c) a salt of a Group IA to Group IIIA metal, said salt being selected from the group consisting of alkoxides, carboxylates, or aryloxides, a concentration of said metal salt being about 0.1 to about 20 moles per mole of said R n MR' 3-n compound.
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
14 words
The composition of claim 1 wherein said Lewis base is a carboxylic acid ester.
Claim 7
Dependent Claim
10 words
The composition of claim 2 further including TiCl 3 .
Claim 8
Dependent Claim
61 words
The composition of claim 1 wherein said R n AlR' 3-n is RAlR' 2 and is formed from the reaction product of R' 2 AlX 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 9
Dependent Claim
17 words
The composition of claim 7, wherein said transition metal compound is TiCl 4 containing MgCl 2 .
Claim 10
Dependent Claim
50 words
The composition of claim 1 wherein R n AlR' 3-n is R 2 AlR' and is formed from the reaction product of R 2 Mg and R'AlX 2 wherein X is selected from the group consisting of chloride, bromide, or a monovalent anion which cannot initiate polymerization of olefinic monomers.
Claim 11
Dependent Claim
17 words
The composition of claim 9, wherein said transition metal compound is TiCl 4 containing MgCl 2 .
Claim 12
Dependent Claim
20 words
The composition of claim 1, wherein said Group IA-IIIA metal is selected from the group consisting of magnesium or aluminum.
Claim 13
Dependent Claim
27 words
The composition of claim 1, wherein said Lewis base is selected from the group consisting of tertiary amines, esters, phosphines, phosphine oxides and phosphates and mixtures thereof.
Claim 14
Dependent Claim
29 words
The composition of claim 1, wherein said Lewis base is selected from the group consisting of aryl phosphates, alkyl phosphites, hexaalkyl phosphinic triamides and dimethyl sulfoxide and mixtures thereof.
Claim 15
Dependent Claim
27 words
The composition of claim 1, wherein said Lewis base is selected from the group consisting of dimethyl foramide, secondary amines, ethers, epoxides and ketones and mixtures thereof.
Claim 16
Dependent Claim
23 words
The composition of claim 1, wherein said Lewis base is selected from the group consisting of saturated and unsaturated heterocycles and mixtures thereof.
Claim 17
Dependent Claim
190 words
An improved catalyst composition adaptable for use in polymerizations which comprises a mixture of: (a) a titanium metal compound on a support, said titanium metal compound selected from the group consisting of TiCl 3 , TiCl 4 , TiBr 3 and TiBr 4 and mixtures thereof; (b) at least one alkyl metal compound having the formula R 3 "M wherein M is selected from the group consisting of Al, Ga, and In, and R" is selected from the group consisting of C 1 -C 20 primary alkyl, secondary alkyl, tertiary alkyl, cycloalkyl, alkenyl and aralkyl groups, wherein said composition includes at least one Lewis base with the proviso that said Lewis base does not cause excessive cleavage of metal-carbon bonds or loss of active sites, a molar ratio of said R 3 "M to said transition metal compound being about 0.5:1 to about 200:1; and (c) a salt of a Group IA to Group IIIA metal, said salt being selected from the group consisting of alkoxides, carboxylates, or aryloxides, a concentration of said metal salt being about 0.1 to about 20 moles per mole of said R 3 "M compound.
Claim 18
Dependent Claim
190 words
An improved catalyst composition adaptable for use in polymerizations which comprises a mixture of: (a) a titanium metal compound on a support, said titanium metal compound selected from the group consisting of TiCl 3 , TiCl 4 , TiBr 3 and TiBr 4 and mixtures thereof; (b) at least one alkyl metal compound having the formula R 3 "M wherein M is selected from the group consisting of Al, Ga, and In, and R" is selected from the group consisting of C 1 -C 20 primary alkyl, secondary alkyl, tertiary alkyl, cycloalkyl, alkenyl and aralkyl groups, wherein said composition includes at least one Lewis base with the proviso that said Lewis base does not cause excessive cleavage of metal-carbon bonds or loss of active sites, a molar ratio of said R 3 "M to said transition metal compound being about 0.5:1 to about 200:1; and (c) a salt of a Group IA to Group IIIA metal, said salt being selected from the group consisting of alkoxides, carboxylates, or aryloxides, a concentration of said metal salt being about 0.1 to about 20 moles per mole of said R 3 "M compound.
Claim 19
Dependent Claim
27 words
The composition of claim 16, wherein said Lewis base is selected from the group consisting of tertiary amines, esters, phosphines, phosphine oxides and phosphates and mixtures thereof.
Claim 20
Dependent Claim
29 words
The composition of claim 16, wherein said Lewis base is selected from the group consisting of aryl phosphates, alkyl phosphites, hexaalkyl phosphinic triamides and dimethyl sulfoxide and mixtures thereof.
Claim 21
Dependent Claim
27 words
The composition of claim 16, wherein said Lewis base is selected from the group consisting of dimethyl foramide, secondary amines, ethers, epoxides and ketones and mixtures thereof.
Claim 22
Dependent Claim
23 words
The composition of claim 16, wherein said Lewis base is selected from the group consisting of saturated and unsaturated heterocycles and mixtures thereof.
Claim 23
Dependent Claim
14 words
The composition of claim 16, wherein said transition metal compound is TiCl 4 .
Claim 24
Dependent Claim
12 words
The composition of claim 21, wherein said support contains MgCl 2 .
Claim 25
Dependent Claim
14 words
The composition of claim 16, wherein said transition metal compound is TiCl 3 .
Claim 26
Dependent Claim
14 words
The composition of claim 16, wherein said Lewis base is a carboxylic acid ester.
Claim 27
Dependent Claim
10 words
The composition of claim 16, further including TiCl 3 .
Claim 28
Dependent Claim
20 words
The composition of claim 16, wherein said Group IA-IIIA metal is selected from the group consisting of magnesium or aluminum.
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) | 1982-06-18 | 1982-12-18 | 1983-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-18 | 1986-12-18 | 1987-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-18 | 1990-12-18 | 1991-06-19 | $7700.00 | Window Closed / Lapsed |