Thermoplastic extrusion process

Details Thermoplastic extrusion process Thermoplastic extrusion process

C - Chemistry, Metallurgy

08

K

C08K 3/22 (2006.01) C08K 5/053 (2006.01) C08K 5/54 (2006.01)

Patent

CA 2233976

Thermoplastic polyolefin compositions used to prepare extruded goods contain an additive package which includes a silicone process aid, at least 1000 parts per million of a particulate metal oxide and a polyethylene glycol. Exemplary compositions contain linear low density polyethylene as the predominant polyolefin and silica as the predominant particulate metal oxide. The performance of the silicone process aid in the presence of at least 1000 parts per million of silica is enhanced by the polyethylene glycol. Extruded goods such as profiles, films and tapes may be prepared according to this invention.

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