Catalyst for the polymerization of olefins
AssigneeBasell Poliolefine Italia S.r.l.
InventorsFABRIZIO PIEMONTESI, GIANNI VITALE, DARIO LIGUORI, GIAMPIERO MORINI
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Abstract
A catalyst for the homopolymerization or copolymerization of CH2═CHR olefins, made from or containing the product obtained by contacting: (i) a solid catalyst component made from or containing Ti, Mg, Cl, and an internal electron donor compound, wherein the solid catalyst component contains from about 0.1 to about 50 wt % of Bi, based upon the total weight of the solid catalyst component; (ii) an alkyl aluminum compound and, (iii) an external electron donor compound having the formula: (R1)aSi(OR2)b wherein R1 and R2 are independently selected from the group consisting of alkyl radicals with 1-8 carbon atoms and a is 0 or 1 and a+b=4.
Claims15
A catalyst for the homopolymerization or copolymerization of CH2═CHR olefins wherein R is a hydrocarbyl radical with 1-12 carbon atoms, comprising the product obtained by contacting:
- (A) the product obtained by contacting:
- (i) a solid catalyst component comprising
- (a) Ti,
- (b) Mg,
- (c) Cl, and
- (d) an internal electron donor compound selected from the group consisting of ethers, amines, silanes, carbamates ketones, esters of aliphatic acids, alkyl and aryl esters of optionally substituted aromatic polycarboxylic acids, diol derivatives selected from the group consisting of monoesters monocarbamates and monoesters monocarbonates and mixtures thereof,
- wherein the solid catalyst component further comprises
- (e) from about 0.1 to about 50 wt % of Bi, based upon the total weight of the solid catalyst component;
- (ii) an alkyl aluminum compound and,
- (iii) an external electron donor compound having the formula:
- (R1)aSi(OR2)b
- wherein R1 and R2 are independently selected from the group consisting of alkyl radicals with 1-8 carbon atoms, optionally containing heteroatoms, and a is 0 or 1 and a+b=4.
A process for the homopolymerization or copolymerization of olefins CH2═CHR, wherein R is a hydrocarbyl radical with 1-12 carbon atoms, optionally in mixture with ethylene, carried out in the presence of a catalyst,
- wherein the catalyst comprises
- (A) the product obtained by contacting:
- (i) a solid catalyst component comprising
- (a) Ti,
- (b) Mg,
- (c) Cl, and
- (d) an internal electron donor compound selected from the group consisting of ethers, amines, silanes, carbamates ketones, esters of aliphatic acids, alkyl and aryl esters of optionally substituted aromatic polycarboxylic acids, diol derivatives selected from the group consisting of monoesters monocarbamates and monoesters monocarbonates and mixtures thereof,
- wherein the solid catalyst component further comprises
- (e) from about 0.1 to about 50 wt % of Bi, based upon the total weight of the solid catalyst component;
- (ii) an alkyl aluminum compound and,
- (iii) an external electron donor compound having the formula:
- (R1)aSi(OR2)b
- wherein R1 and R2 are independently selected from the group consisting of alkyl radicals with 1-8 carbon atoms, optionally containing heteroatoms, and a is 0 or 1 and a+b=4.
Dependencies are inferred from the claim text.