Method of making extruded polyethlyene pipes

Details Method of making extruded polyethlyene pipes Method of making extruded polyethlyene pipes

1994-06-17

1999-09-28

Tsang, Cecilia J.

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

525240, C08L 2300

Patent

active

059585307

ABSTRACT:
The invention relates to a process for the production of plastic parts, particularly pipes and sleeves, by the extrusion of a mixture of polyethylene homopolymer, copolymer or block polymer (PE) and a polymeric plasticizer reactive therewith, as well as small amounts of conventional additives, in which the moulded or extruded plastic part optionally subsequently undergoes cross-linking and stretching, or cross-linking only, in which a mixture of PE and EPDM with an average molecular weight of 1,000 to 20,000 in a weight ratio of 90 to 97% PE and 3 to 10% by weight EPDM is moulded or extruded.

REFERENCES:
patent: 4321292 (1982-03-01), Blomgvist
patent: 4722971 (1988-02-01), Datta et al.
patent: 4843129 (1989-06-01), Spenadel et al.
patent: 4960829 (1990-10-01), Allen et al.
patent: 5030694 (1991-07-01), Kelley
"Hawley's Condensed Chemical Dictionary", Lewis (Twelth Edition, 1993) p. 933, "Polyethylene".

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