Patent ID: 8344070
Filing Date: 2013-01-01
Classification: C08K,C08L

Abstract:
1. A polymer composition comprising a polymer blend of: (a) at least 40 wt % (based upon the weight of the polymer composition) of a first polymer component comprising a cyclic olefin polymer comprising ethylene and at least 20 wt % (based upon the weight of the cyclic olefin polymer) of norbornene and/or dicyclopentadiene, said cyclic olefin polymer having a glass transition temperature greater than 100° C.; (b) from about 15 wt % to about 40 wt % (based upon the weight of the polymer composition) of a second polymer component comprising an acyclic olefin polymer modifier having a glass transition temperature of less than −30° C. and a Bicerano solubility parameter that is up to 0.6 J (c) at least 10 wt % (based upon the weight of the polymer composition) of one of more fillers having a median particle diameter of about 0.1 to about 100 microns and an aspect ratio greater than 1.2, wherein: 1) the notched Izod impact resistance of said polymer composition measured at 23° C. is greater than 100 J/m; 2) the flexural modulus (1% secant method) of said polymer composition is greater than 1400 MPa; and 3) the domain size of the acyclic olefin polymer modifier is less than 2 microns in average diameter.