English Abstract

Industrial Synthetic Method of the Rubbers
9. Polyolefin Elastomers

Michio ONO
Dow Chemical Japan Ltd., Dow Japan Development Center, Yokohama-shi, Kanagawa-ken, JAPAN
Nippon Gomu Kyokaishi,(2016),89(3),63-67 General Review in Japanese

In this paper, we will report the industrial production method and properties of polyolefin elastomers (POEs) and their applications. Most POEs are random copolymers of ethylene-co-1-butene (EB) and ethylene-co-1-octene (EO). These POEs are generally produced by solution polymerization in a hydrocarbon solvent with unique catalyst systems that enable efficient co-monomer incorporation and ability to attain lower crystallinity than traditional polyolefin products. Their physical properties are greatly dependent on co-monomer type, co-monomer content and molecular weight. POEs are used in a variety of applications, including impact modifiers for automotive polypropylene (PP) based compounds. This paper will further describe new POEs including olefin block copolymers (OBCs) and super high flow POEs.

Keywords: Polyolefin Elastomer, Solution Polymerization, Impact Modifier, Polypropylene, Molecular Weight Distribution, Co-monomer Sequential Distribution, Chain Shuttling Agent