Equistar Chemicals, LP

Marvin R Appel

Bradley P Etherton

Steven W Horwatt

Jeffrey S Borke

Mick C Hundley

A coated or jacketed wire or cable, and components thereof are disclosed. The coating, jacket, and components, which comprise a polyolefin and a phenolic polymeric antioxidant, exhibit outstanding oxidative thermal stability (as indicated by the increase in the oxidative inductive time (OIT)), when compared to polyolefins containing traditional non-polymeric antioxidants. A greater improvement in the thermal oxidative stability is observed after the polyolefin mixtures have been aged in water-blocking filler(s).

Preparation of wires and cables

A process to remove metal contaminants from a hydrocarbon solution of polyethylene is disclosed. The process comprises adding a primary alcohol and a &#x3b2;-diketone to a solution of polyethylene at a temperature within the range of 120&#xb0; C. to 300&#xb0; C. and contacting the solution with basic alumina. The process removes metal contaminants and minimizes degradation and condensation products, which can have a detrimental effect on polyethylene properties. The process provides polyethylene with low metal residues and good properties.

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Loveland, OH, United States of America

Marvin R Appel