EP0026027A1
Expired / Lapsed
EP
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Method for polymerizing alpha olefin
Assignee: Ube Corp
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Filing: 1980-05-07
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Granted: —
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Expires: 2000-05-07
Abstract
Abstract Poly-a-olefin having an excellent H.I. is produced with an excellent yield by bringing, in the presence of an organic acid ester, a feed, containing at least one a-olefin having 3 or more carbon atoms, into contact with a catalyst which comprises (A) a solid catalytic ingredient prepared (a) by reacting a Grignard compound with an aluminium halide-tetraalkoxysilane reaction product, (b) bringing the resultant reaction product into a first contact with titanium tetrahalide, (c) treating the resultant titanium-containing solid product with an organic acid ester, and, finally, (d) bringing the treated solid product into a second contact with titanium tetrahalide, and; (B) another catalytic ingredient consisting of a trialkyl aluminium.
Inventors
- 👤 Haruo Ueno
- 👤 Takefumi Yano
- 👤 Tokuji Inoue
- 👤 Shigeru Ikai
- 👤 Yoshiyuki Kai
- 👤 Michimasa Shimizu
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-02 15:23
CPC Classifications
C; C08; C08F; C08F10/00
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
125 words
A method for polymerizing an a-olefin which comprises bringing, in the presence of an organic acid ester, a feed containing at least one a-olefin having 3 or more carbon atoms into contact with a catalyst comprising (A) a solid catalytic ingredient which has been prepared in such a manner that (a) a Grignard compound is reacted with a reaction product of an aluminium halide with a tetraalkoxysilane, (b) the resultant solid reaction product is brought into a first contact with a titanium tetrahalide, (c) the resultant titanium-containing solid product is treated with an organic acid ester and, finally, (d) the treated solid product is brought into a second contact with a titanium tetrahalide; and (B) another catalytic ingredient consisting of at least one trialkyl aluminium.
Claim 2
Independent Claim
125 words
A method for polymerizing an a-olefin which comprises bringing, in the presence of an organic acid ester, a feed containing at least one a-olefin having 3 or more carbon atoms into contact with a catalyst comprising (A) a solid catalytic ingredient which has been prepared in such a manner that (a) a Grignard compound is reacted with a reaction product of an aluminium halide with a tetraalkoxysilane, (b) the resultant solid reaction product is brought into a first contact with a titanium tetrahalide, (c) the resultant titanium-containing solid product is treated with an organic acid ester and, finally, (d) the treated solid product is brought into a second contact with a titanium tetrahalide; and (B) another catalytic ingredient consisting of at least one trialkyl aluminium.
Claim 3
Dependent Claim
22 words
A method as claimed in claim 1, wherein said a-olefin is selected from the group consisting of propylene, 1-butene, 4-methyl-l-pentene and 1-hexene.
Claim 4
Dependent Claim
27 words
A method as claimed in claim 1, wherein the contact of said feed with said catalyst is carried out at a temperature of from 30 to 100°C.
Claim 5
Dependent Claim
28 words
A method as claimed in claim 1, wherein the contact of said feed with said catalyst is effected under a pressure of from 1 to 80 kg/cm .
Claim 6
Dependent Claim
25 words
A method as claimed in claim 1, wherein said aluminium halide is selected from the group consisting of aluminium chloride, aluminium bromide and aluminium iodide.
Claim 7
Dependent Claim
34 words
A method as claimed in claim 1, wherein said tetraalkoxysilane is selected from those of the formula, Si(OR 1 ) 4 wherein R 1 represents an alkyl radical having 1 to 8 carbon atoms.
Claim 8
Dependent Claim
27 words
A method as claimed in claim 1, wherein said aluminium halide is used in an amount of from 0.25 to 10 moles per mole of said tetraalkoxysilane.
Claim 9
Dependent Claim
46 words
A method as claimed in claim 1, wherein said Grignard compound to be used in Step (A) is selected from those of the formula, R 2 MgX, wherein R 2 represents an alkyl radical having 1 to 8 carbon atoms and X represents a halogen atom.
Claim 10
Dependent Claim
30 words
A method as claimed in claim 1, wherein in Step (A) said Grignard compound is used in an amount of from 0.05 to 4 moles per mole of said tetraalkoxysilane.
Claim 11
Dependent Claim
25 words
A method as claimed in claim 1, wherein said reaction of in Step (a) is carried out at a temperature of from -50 to 100°C.
Claim 12
Dependent Claim
39 words
A method as claimed in claim 1, wherein the solid reaction product in Step (a) is washed with an - organic solvent consisting of at least one member selected from the group consisting of benzene, toluene, hexane and heptane.
Claim 13
Dependent Claim
28 words
A method as claimed in claim 1, wherein said titanium tetrahalide to be used in Step (b) is selected from titanium tetrachloride, titanium tetrabromide, and titanium tetra iodide.
Claim 14
Dependent Claim
34 words
A method as claimed in claim 1, wherein in Step (b), said titanium tetrahalide is used in an amount of at least one mole per mole of said Grignard compound used in Step (A)..
Claim 15
Dependent Claim
34 words
A method as claimed in claim 1, wherein the first contact of said solid reaction product with said titanium tetrahalide in Step (b) is carried out at a temperature of from 20 to 200°C.
Claim 16
Dependent Claim
24 words
A method as claimed in claim 1, wherein the titanium-containing solid product prepared in Step (b) contains 0.5 to 10% by weight of titanium.
Claim 17
Dependent Claim
79 words
A method as claimed in claim 1, wherein said organic acid ester to be used in Step (c) is selected from aromatic carboxylic acid esters of the formula: where R 5 represents an alkyl radical having 1 to 6 carbon atoms and Y represents a hydrogen atom, an alkyl radical having 1 to 4 carbon atoms or a radical of the fomula, OR 6 , in which R 6 represents an alkyl radical having 1 to 4 carbon atoms.
Claim 18
Dependent Claim
33 words
A method as claimed in claim 1, wherein in Step (c), said organic acid ester is used in an amount of from 0.1 to 10 millimoles per gram of said titanium-containing solid product.
Claim 19
Dependent Claim
24 words
A method as claimed in claim 1, wherein said treatment in Step (c) is carried out at a temperature of from 0 to 200°C.
Claim 20
Dependent Claim
19 words
A method as claimed in claim 1, wherein said solid catalytic ingredient contains.0.5 to 5% by weight of titanium.
Claim 21
Dependent Claim
34 words
A method as claimed in claim 1, wherein said trialkyl aluminium is selected from those of the formula, Al R7 , wherein R 7 represents an alkyl radical having 2 to 6 carbon atoms.
Claim 22
Dependent Claim
33 words
A method as claimed in claim 1, wherein said trialkyl aluminium is used in an amount of from 1 to 1000 moles per gram atom of titanium contained in said solid catalytic ingredient.
Claim 23
Dependent Claim
36 words
A method as claimed in claim 1, wherein said organic acid ester presented in said polymerization mixture is used in an amount of from 0.05 to 0.6 moles per mole of trialkylaluminium contained in said catalyst.
Claim 24
Dependent Claim
16 words
A method as claimed in claim 1, wherein said catalyst is suspended in the polymerization mixture.
Claim 25
Dependent Claim
36 words
A method as claimed in claim 22, wherein said catalyst supended in said polymerization mixture is in an amount, in terms of elemental titanium, of 0.001 to 10 milligram atoms per liter of said polymerization mixture.
Claim 26
Dependent Claim
36 words
A method as claimed in claim 22, wherein said catalyst suspended in said polymerization mixture is in an amount, in terms of the trialkyl aluminium, of 0.01 to 1,000 millimoles per liter of said polymerization mixture.
References Cited (Backward Citations)
GB2014164A
Cited
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