US 2022/0025083 A1 · POLYPROPYLENE RESIN HAVING EXCELLENT MELT CHARACTERISTICS, AND PREPARATION METHOD THEREFOR

Abstract

The present invention relates to a high-melt-strength polypropylene resin, and a preparation method therefor. A method for preparing the high-melt-strength polypropylene resin, according to the present invention, comprises the steps of: creating a polypropylene by polymerizing propylene monomers in the presence of a metallocene catalyst; and putting a diene compound and a comonomer into the created polypropylene and unreacted propylene monomers and reacting same, thereby forming a C40 or greater long-chain branch on the main chain of the polypropylene.

Claims11

Dependent claims

A method of producing a high-melt-strength polypropylene resin, comprising:

producing a polypropylene by polymerizing a propylene monomer in the presence of a metallocene catalyst;
and
forming a long-chain branch having 40 or more carbon atoms in a main chain of the polypropylene by adding and reacting a diene compound and a comonomer to the produced polypropylene and an unreacted propylene monomer.

Dependencies are inferred from the claim text.

Facts

Application

17/296,936Filed 27 Nov 2019

Priority

KR 10-2018-015079129 Nov 2018

Published

27 Jan 2022

Term ends

Not estimatedThe source records don’t support an estimate.

Classification10 codes

C08F 210/06
Monomers containing three or four carbon atoms: propene
C08F 255/02
Macromolecular compounds obtained by polymerising monomers on to polymers of hydrocarbons as defined in group C08F10/00: on to polymers of olefins…
C08F 110/06
Monomers containing three or four carbon atoms: propene
C08L 23/12
Homopolymers or copolymers of propene: polypropene

Polypropylene resin having excellent melt characteristics, and preparation method therefor

Life of this patent

Polypropylene resin having excellent melt characteristics, and preparation method therefor

Life of this patent

Abstract

Claims11