US 2003/0171208 A1 · Catalytic component for the polymerization of olefins obtained by impregnation of a prepolymer with a solution of a catalytic component, prepolymer obtained from the catalytic component and polymerization process using said catalytic component

Abstract

The present invention relates to a catalytic component for the polymerization of olefins combining a number of catalytic components for the polymerization of olefins and to a process for preparing it. The catalytic component according to the invention is obtained by impregnation of a prepolymer with a solution of a catalytic component for the polymerization of olefins. The invention brings about control of the combination of different catalytic components and provides for improvement in the control of the quality of the polymers manufactured by virtue of the catalytic action of the combined catalytic components. Another advantage of the invention is to be able to control the morphology and the particle size distribution of the polymers by choosing the morphology of a single catalytic component. The prepolymer and the polymer obtained from the catalytic component according to the invention are also subjects of the present invention.

Claims16

Dependent claims

Process for the manufacture of a catalytic component for the polymerization of olefins comprising:

a—the manufacture of a prepolymer by prepolymerization A in the presence of a solid catalytic component A, then
b—the impregnation of the said prepolymer with a solution of a catalytic component B,
the component A and the component B not being such that at the same time:
the component A comprises a group with the cyclopentadienyl skeleton and a compound containing an Al—O bond, and
the component B comprises two ligands each comprising a cyclopentadienyl skeleton connected to each other by a divalent radical.

2 more elements

Dependencies are inferred from the claim text.

Facts

Application

10/379,728Filed 6 Mar 2003

Priority

FR 94 0342024 Mar 1994

Published

11 Sep 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification9 codes

C08F 110/02
Homopolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond: ethene
C08F 10/00
Homopolymers and copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double
C08F 4/65904
Component covered by group C08F4/64 containing a transition metal-carbon bond: in combination with another component of C08F4/64
C08F 4/65912
Component covered by group C08F4/64 containing a transition metal-carbon bond: in combination with an organoaluminium compound

Family

Application08/405,655Continuation · filed 17 Mar 1995

Application08/953,296Division · filed 17 Oct 1997

Application08/953,296Continuation · filed 17 Oct 1997

Application10/379,728Division · filed 6 Mar 2003

US 6,551,956 B1Related patent

US 7,019,090 B2Related patent

US 2003/0171208 A1This patent

From the US filing history. Foreign family members aren’t listed.

Catalytic component for the polymerization of olefins obtained by impregnation of a prepolymer with a solution of a catalytic component, prepolymer obtained from the catalytic component and polymerization process using said catalytic component

Life of this patent

Catalytic component for the polymerization of olefins obtained by impregnation of a prepolymer with a solution of a catalytic component, prepolymer obtained from the catalytic component and polymerization process using said catalytic component

Life of this patent

Abstract

Claims16