Triarylphosphine or triarylarsine compound, alpha-olefin polymerization catalyst using the compound, ternary copolymer, and production process of alpha-olefin-((meth)acrylic acid)-based copolymer

Patent metadata

Field	Value
Publication number	US-9890231-B2
Application number	US-201615161663-A
Country	US
Kind code	B2
Filing date	May 23, 2016
Priority date	Nov 20, 2008
Publication date	Feb 13, 2018
Grant date	Feb 13, 2018

Abstract

To provide an industrially useful α-olefin•((meth)acrylic acid)-based olefin copolymer having both a high molecular weight and a high comonomer content, a catalyst component capable of realizing a production of two different kinds of α-olefin•((meth)acrylic acid)-based olefin copolymers, and a production process using the catalyst. An α-olefin•((meth)acrylic acid)-based olefin copolymer is produced by using a metal complex complexed with a ligand represented by the following formula (Y is phosphorus or arsenic) for a catalyst composition.

First claim

The invention claimed is:

1. A ternary copolymer of an ethylene, an α-olefin having a carbon number of 3 to 10 and a (meth)acrylic acid or ester represented by CH 2 ═C(R 18 )CO 2 (R 19 ), wherein R 18 is a hydrogen atom or an alkyl group having a carbon number of 1 to 10, and R 19 is a hydrogen atom or an alkyl group having a carbon number of 1 to 30, which may contain a hydroxyl group, an alkoxy group or an epoxy group on an arbitrary position, the ternary copolymer satisfying the following requirements (a) and (b):
(a) the ratio Mw/Mn of the weight average molecular weight (Mw) to the number average molecular weight (Mn) satisfies the following relationship:
1.5≦Mw/Mn≦3

(b) the melting point Tm (° C.), the α-olefin content [C] (mol %) and the polar group-containing vinyl monomer content [X] (mol %) from the (meth)acrylic acid or ester satisfy the following relationship:
60 ≦Tm≦ 135−6.4×([ C ]+[ X ])

wherein Tm is a peak temperature of a melting curve obtained by the measurement using a differential scanning calorimeter (DSC), and when a plurality of melting peaks are detected, Tm is the temperature of the maximum peak out of detected peaks.

2. The ternary copolymer as claimed in claim 1 , wherein a phase angle δ(G*=0.1 MPa at G*−0.1 MPa) as measured by a rotary rheometer is from 40 to 75°.

3. The ternary copolymer as claimed in claim 1 , wherein a difference T90−T10 (° C.) between a temperature T10 (° C.) allowing 10 wt % of the total to elute in an integrated elution curve as determined by a continuous temperature rising elution fractionation method (TREF) and a temperature T90 (° C.) allowing 90 wt % of the total to elute, and a weight average elution temperature Tw (° C.) satisfy the following relationship:
28−0.3 ×Tw≦T 90− T 10≦41−0.3× Tw.

4. The ternary copolymer as claimed in claim 1 , wherein the carbon number of the α-olefin is any of 4 to 8.

Assignees

• Japan Polyethylene Corp
• Japan Polypropylene Corp

Inventors

• Kobayashi Minoru
• Uchino Hideshi
• Yamamoto Kazuhiro
• Egashira Toshiaki
• Shimizu Hiroyuki
• Morioka Tetsuya

Classifications

• C07F15/04

  Nickel compounds · CPC title

• C08F2500/03

  Narrow molecular weight distribution, i.e. Mw/Mn < 3 · CPC title

• C07F9/65515

  the oxygen atom being part of a five-membered ring · CPC title

• C08F210/02 Primary

  Ethene · CPC title

• C08F210/14

  Monomers containing five or more carbon atoms · CPC title