Disclosed are a chemically modified polyolefin elastomer composition that
is highly compatible with thermoplastics and useful in improving the low temperature
impact strength of thermoplastics, and a method for preparing the chemically modified
polyolefin elastomer composition. The elastomer composition includes a polyolefin
resin and a chemically modified ethylene--olefin elastomer mixed with the
polyolefin resin. The chemically modified ethylene--olefin elastomer includes
an ethylene--olefin elastomer backbone and grafted branches from the backbone.
The branches includes polymers of one or more monomers comprising an unsaturated
organic compound containing at least one carbonyl group. The method of producing
the composition includes mixing an ethylene--olefin elastomer and a polyolefin
resin to provide a mixture thereof, to which added is one or more monomers having
an unsaturated organic compound containing at least one carbonyl group. Then the
one or more monomers are polymerized in the presence of a grafting initiator.
