Composition containing magnesium, titanium, halogen and an inner electron donor, its preparation and use for the polymerization of alpha-olefins
AssigneeBorealis A/S
InventorsThomas Garoff, Timo Leinonen, Sirpa Ala-Huikku
Life of this patent
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Abstract
Disclosed is the homogenous reaction at 40-200° C. of MgX12−nR1OH (where n=2.0-6.4) with TiX24 and a higher (C6-C20) alkyl ester of a carboxylic acid, optionally in the presence of a solvent. In such a completely homogenous reaction, no carrier appears. In order to obtain a product in the liquid stage, the molar ratio between the ester and the MgX12.nR1OH should be at least 0.8/j wherein j is the number of carboxyl groups in the ester. If the ester has two carboxyl groups, for instance, j is 2 and the molar ratio should be at least 0.8/2, that is, 0.4.
Claims49
A composition containing magnesium, titanium, halogen, and a carboxylic acid ester, prepared by bringing into contact with each other at a certain temperature and reacting the complex MgX12.nR1OH, where X1 is a halogen, R1 is a C1-C20 alkyl, and n is in the range 2.0-6.4, a titanium tetrahalide TiX24, where X2 is a halogen, and a carboxylic acid ester, wherein the said composition is obtained in the liquid state by using:
- (a) as the said carboxylic acid ester, a compound that contains at least 8·j carbon atoms and is compatible with the following formula (I)
- R2(COOR3)j (I)
- where R2 is a j-valent substituted or unsubstituted C1-C34 hydrocarbon group, R3 is a C6-C20 alkyl group, and j is an integer from 1 to 4;
- (b) a molar ratio R2(COOR3)j/MgX12.nR1OH that is ≧approximately 0.8/j;
- (c) a molar ratio TiX24/MgX12.nR1OH that is ≧approximately n;
- (d) optionally an organic dissolvent substance S;
- and
- (e) as the said certain temperature, a value that is in the range 40-200° C.
A composition containing magnesium, titanium, halogen and an electron donor, wherein it is soluble at least in liquid titanium tetrahalide, in a mixture of liquid titanium tetrahalide and a dissolvent organic substance S1, or in a dissolvent organic substance S1 and that it is a composition compatible with the following empirical formula (III):
- (MgX32)v(TiX44)x(D3)y(TiX43OR7)z (III)
- where X3 is a halogen, X4 is a halogen, R7 is a C1-C20 alkyl, the inner electron donor D3 is a di- C6-C20 alkyl ester of phthalic acid, x+z is basically approximately 1, v is 1 to 8, x is 0 to 1, and y is 0.2 to 2.
A composition containing magnesium, titanium, halogen and an electron donor, wherein it is a composition compatible with the following empirical formula (IV):
- (MgX52)v′(TiX64)x′(D4)y′(TiX63OR8)z′ (IV)
- where X5 is a halogen, X6 is a halogen, R8 is a C1-C20 alkyl, the inner electron donor D4 is a di- C6-C20 alkyl ester of phthalic acid, x′+z′ is basically approximately 1, v′ is 9 to 16, x′ is 0.2 to 1, and y′ is 0.2 to approximately 1.
A composition containing magnesium, titanium, halogen and an electron donor, wherein it is a composition compatible with the following empirical formula (VI):
- (MgX72)v″(TiX84)x″(D5)y″(TiX83OR9)z″ (VI)
- where X7 is a halogen, X8 is a halogen, R9 is a C1-C20 alkyl, the inner electron donor D5 is a di- C1-C6 alkyl ester of phthalic acid, x″+z″ is basically approximately 1.2, v″ is 1.5 to 10.5, x″ is 0.2 to 1.2, and y″ is 0.2 to 1.2.
Dependencies are inferred from the claim text.