# US 10,308,734 B2 · Catalyst components for the polymerization of olefins and catalysts therefrom obtained

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- Number: US 10,308,734 B2
- Document ID: US10308734B2
- Status: Granted
- Kind: B2
- Application number: 14/431,590
- Filed: 2013-09-25
- Published: 2015-09-17
- Granted: 2019-06-04
- Earliest claimed: 2012-09-26
- Assignees: Basell Poliolefine Italia S.r.l.
- Applicants: Basell Poliolefine Italia S.r.l.
- Inventors: Simona Guidotti; Simona Esposito; Dario Liguori; Giampiero Morini; Fabrizio Piemontesi; Gianni Vitale
- Web page: https://patentgrep.com/patent/US10308734B2

## CPC

- C08F 10/06: Propene
- C08F 4/6543: {halides of magnesium}
- B01J 23/06: of zinc, cadmium or mercury
- B01J 27/04: Sulfides
- B01J 37/0036: {Grinding}
- C08F: MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS

## Abstract

Catalyst components component for the (co)polymerization of olefins CH2═CHR, in which R is a hydrocarbyl radical with 1-12 carbon atoms, optionally in mixture with ethylene, comprising Ti, Mg, Zn, Cl, and an electron donor compound characterized by the fact that more than 50% of the titanium atoms are in the +4 valence state, and that the amount of Zn ranges from 0.1 to 4% by weight based on then total weight of said solid catalyst component.

## Claims

### Claim 1

A catalyst for the (co)polymerization of olefins CH2═CHR, in which R is a hydrocarbyl radical with 1-12 carbon atoms, optionally in mixture with ethylene, having a solid catalyst component having an average diameter of 5-150 μm, wherein the solid catalyst component comprises Ti, a Zn compound, MgCl2, and an electron donor compound, wherein more than 50% of titanium atoms are in a +4 valence state, wherein an amount of Zn ranges from 0.1 to 4% by weight based on a total weight of solid catalyst component, and wherein the Zn compound is selected from Zn halide, Zn carbonate, Zn acetate, Zn nitrate, Zn oxide, Zn sulfate or Zn sulfide.

### Claim 2 (depends on 1)

The catalyst of claim 1, wherein the amount of Zn ranges from 0.2 to 3.5% by weight based on the total weight of solid catalyst component.

### Claim 3 (depends on 1)

The catalyst of claim 1, wherein a Zn/Mg molar ratio ranges from 0.001 to 0.05.

### Claim 4 (depends on 1)

The catalyst of claim 1, wherein an amount of Ti ranges from 1.1 to 2.5% wt.

### Claim 5 (depends on 1)

The catalyst of claim 1, wherein the electron donor compound is selected from esters, ethers, amines, silanes and ketones or mixtures thereof.

### Claim 6 (depends on 1)

The catalyst of claim 1, wherein the electron donor compound is selected from the group consisting of alkyl and aryl esters of optionally substituted aromatic mono or polycarboxylic acids, esters of malonic acids, esters of glutaric acids, esters of succinic acids, esters of maleic acids and 1,3-diethers of the formula (II):
wherein R, RI, RII, RIII, RIV and RV equal or different from each other, are hydrogen or hydrocarbon radicals having from 1 to 18 carbon atoms, and RVI and RVII, equal or different from each other, have the same meaning of R-RV except that they cannot be hydrogen; one or more of the R-RVII groups can be linked to form a cycle.

### Claim 7 (depends on 1)

The catalyst of claim 1, wherein the electron donor compound is selected from the group consisting of the (S,S), (R,R) or meso forms of the succinates of formula (I) below:
in which the radicals R1 and R2, equal to, or different from, each other are a C1-C20 linear or branched alkyl, alkenyl, cycloalkyl, aryl, arylalkyl or alkylaryl group, optionally containing heteroatoms; and the radicals R3 and R4 equal to, or different from, each other, are C1-C20 alkyl, cycloalkyl, aryl, arylalkyl or alkylaryl group, optionally containing heteroatoms with the proviso that at least one R3 and R4 is a branched alkyl.

### Claim 8 (depends on 1)

The catalyst of claim 1, wherein a final amount of electron donor compound in the solid catalyst component ranges from 1 to 25% by weight.

### Claim 9 (depends on 1)

The catalyst of claim 1, wherein the Zn compound is selected from Zn oxide and Zn dichloride.

### Claim 10 (depends on 1)

The catalyst of claim 1, wherein the Zn compound is Zn carbonate.

### Claim 11 (depends on 1)

The catalyst of claim 1, wherein the Zn compound is Zn acetate.

### Claim 12 (depends on 1)

The catalyst of claim 1, wherein the Zn compound is Zn nitrate.

### Claim 13 (depends on 1)

The catalyst of claim 1, wherein the Zn compound is Zn sulfate.

### Claim 14 (depends on 1)

The catalyst of claim 1, wherein the Zn compound is Zn sulfide.

### Claim 15 (depends on 1)

The catalyst of claim 1, comprising a product obtained by contacting:
(i) the solid catalyst component,
(ii) an alkylaluminum compound, and
(iii) optionally an external electron donor compound.

### Claim 16 (depends on 15)

The catalyst according to claim 15, wherein the alkylaluminum compound (ii) is a trialkylaluminum compound.

### Claim 17 (depends on 15)

The catalyst according to claim 15, wherein the external donor compound is selected from a silicon compound of formula (R6)a(R7)bSi(OR8)c, where a and b are integers from 0 to 2, c is an integer from 1 to 4 and the sum (a+b+c) is 4; R6, R7, and R8, are alkyl, cycloalkyl or aryl radicals with 1-18 carbon atoms optionally containing heteroatoms.