US 9,056,939 B2 · Olefin block copolymer

Abstract

The present description relates to an olefin block copolymer with enhanced processability as well as excellences in elasticity and heat resistance, and a preparation method for the same. The olefin block copolymer includes first and second segments, each containing an ethylene or propylene repeating unit and an α-olefin repeating unit at different mole fractions, where the second segment is dispersed in the form of a closed curve as a dispersed phase on the first segment according to a TEM (Transmission Electron Microscope) image.

Claims11

Dependent claims

An olefin block copolymer comprising hard and soft segments, each comprising an ethylene or propylene repeating unit and a C4 or more α-olefin repeating unit at different mole fractions,

wherein the soft segment is dispersed in the form of a closed curve as a dispersed phase on the hard segment according to a TEM (Transmission Electron Microscope) image, and
wherein the form of the closed curve is circular or elliptical.

Dependencies are inferred from the claim text.

Facts

Application

13/980,741Filed 27 Jan 2012

Priority

KR 10-2011-000844527 Jan 2011

Published

US 2013/0296519 A17 Nov 2013

Granted

16 Jun 2015

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

C08F 297/06
Macromolecular compounds obtained by successively polymerising different monomer systems using a catalyst of the ionic or coordination type…:…
C08F 4/63927
Containing at least two cyclopentadienyl rings, fused or not: two cyclopentadienyl rings being mutually bridged
C08F 4/65927
Containing at least two cyclopentadienyl rings, fused or not: two cyclopentadienyl rings being mutually bridged
C08F 210/06
Monomers containing three or four carbon atoms: propene

Olefin block copolymer

Life of this patent

Olefin block copolymer

Life of this patent

Abstract

Claims11