Singlelayer and multilayer polyolefin foam pipes

Details Singlelayer and multilayer polyolefin foam pipes Singlelayer and multilayer polyolefin foam pipes

2006-01-17

2006-01-17

Pyon, Harold (Department: 1772)

Stock material or miscellaneous articles

Hollow or container type article

Polymer or resin containing

C428S036500, C428S036900, C428S036920, C428S308400, C428S318600, C428S318800, C428S319900, C138S140000, C138S142000, C138S145000, C138S149000

Reexamination Certificate

active

06986922

ABSTRACT:
Single layer and multilayer polyolefin foam pipes with improved compression resistance have a polyolefin foam layer which consists of mixtures of modified propylene polymers having strain hardening behaviour or propylene homopolymers with a stereospecifity index >98% or propylene copolymers with a stereospecifity index of the homopolymer matrix of >96%. The polyolefin foam pipes are coated steel pipes for transporting crude oil or gas products or district heating applications, single layer pipes for insulation purposes and for non- or low-pressure applications and multilayer plastic pipes for the transportation of hot or cold fluids.

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