US 9,657,119 B2 · Preparation method of a supported metallocene catalyst

Abstract

The present invention relates to a preparation method of a highly active supported metallocene catalyst which can prepare a polyolefin of high bulk density. More specifically, the present invention provides a method of preparing the supported metallocene catalyst in which one or more metallocene catalysts are loaded on the silica carrier of which the inside is penetrated by more cocatalyst than the prior art and the outside is attached with a substantial amount of the cocatalyst. The catalyst according to the present invention can prepare a polyolefin polymer with improved bulk density and efficiency while maintaining its highly active catalytic characteristic.

Claims14

Dependent claims

A method of preparing a supported metallocene catalyst, including the steps of:

preparing a silica carrier;
loading an alkylaluminoxane on the inside and the surface of the silica carrier by bringing the silica carrier into contact with the alkylaluminoxane, a cocatalyst component;
and
sequentially loading one or more metallocene compounds on the silica carrier on which the alkylaluminoxane is loaded,
wherein the alkylaluminoxane is dividedly loaded at different temperatures by a separate-input method, and
wherein the amount of the alkylaluminoxane loaded on the silica carrier is 5 to 15 mmol/g based on 1 g of the silica carrier.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

15/033,866Filed 28 Nov 2014

Priority

KR 10-2013-014647328 Nov 2013

Published

US 2016/0304637 A120 Oct 2016

Granted

23 May 2017

Term ends

Not estimatedThe source records don’t support an estimate.

Classification8 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 4/65908
Component covered by group C08F4/64 containing a transition metal-carbon bond: in combination with an ionising compound other than alumoxane, e.g.…
C08F 4/65912
Component covered by group C08F4/64 containing a transition metal-carbon bond: in combination with an organoaluminium compound

Preparation method of a supported metallocene catalyst

Life of this patent

Preparation method of a supported metallocene catalyst

Life of this patent

Abstract

Claims14