Shell Oil Comapny

Mark L Kasakevich

Jerry W Secrist

Charles C Hwo

Donald H Krasner

Roland O Meuhlner

The use of a minor amount of poly-1-butene for improving the processability or extrusion efficiency of a metallocene-made thermoplastics, particularly metallocene-made low density polyethylene, by adding about 0.1-15 wt % of poly-1-butene to the metallocene-made thermoplastics which are melt incompatible with the poly-l-butene prior to processing.

Method for improving processability of thermoplastics

A process is disclosed for the formation of polybutylene pipes having improved mechanical properties, by reduction in the rate of cooling of the extrudate used to form the pipe sections. Preferably, the ratio of the cooling bath residence time in minutes divided by the cooling water temperature in degrees Fahrenheit is selected to be in the range of from about 0.004 to about 0.010.

Growing community of inventors

Missouri City, TX, United States of America

Mark L Kasakevich