METHOD FOR DECREASING SWELL PROPERTIES OF ALPHA OLEFINS

摘要

A method for decreasing the swell properties of polymers produced by fluidized bed polymerization of alpha olefins with a chromium-titanium containing catalyst by utilizing the chromium in the hexavalent state and in the range of about 0.15 to 0.40 weight percent and by regulating the ethylene partial pressure and temperature of the polymerization.