Pipe manufactured from irradiated polyethylene containing...

Details Pipe manufactured from irradiated polyethylene containing... Pipe manufactured from irradiated polyethylene containing...

C - Chemistry, Metallurgy

08

J

204/91.74

C08J 3/28 (2006.01) B29B 9/16 (2006.01) B29C 67/24 (2006.01) B29C 35/08 (2006.01)

Patent

CA 1142882

ABSTRACT OF THE DISCLOSURE A process for the manufacture of pipe, and the pipe so obtained, are disclosed. A blend of a polyethylene having a density in the range of 0.935-0.948 g/cm3 and 1-3%, by weight, of carbon black and which has been irradiatd in an inert atmosphere while in the form of granules, is fed to an extruder, extruded in the form of pipe and cooled. The irradiation may be electron or gamma irradiation and is in an amount of less than 1.5 Mrad. The preferred inert atmos- phere is steam. The pipe has improved properties and may be used in a wide variety of uses e.g. construction of sewer lines and for transmission of liquids and gases and the like. DC-0135

359523

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