Patent ID: 6218331
Filing Date: 2001-04-17
Classification: C08F,Y10S

Abstract:
A process for preparing a polymer supported Ziegler-Natta catalyst component comprising:(a) providing a particulate olefin copolymer support comprised of discrete particles that are spherical or substantially spherical having a median particle size ranging from about 1 up to about 500 microns, a pore volume less than 0.1 cc/g and a surface area of less than 15 m.sup.2 /g, a melt index of about 1 up to about 125 g/10 min. and comprising from about 50.1 to about 99.9 weight percent C.sub.2-3 .alpha.-olefin and from about 0.1 to about 49.9 weight percent of a monomer selected from the group consisting of a vinyl ester and an acrylate;(b) contacting said particulate olefin copolymer support with an organometallic compound, complex or mixture thereof under conditions effective to form a catalyst precursor;(c) washing the catalyst precursor with an organic solvent; and(d) contacting said washed catalyst precursor produced in step (c) with a transition metal, a transition metal compound or mixture thereof under conditions effective to produce a supported catalyst.