Composition
AssigneeSi Group, Inc.
InventorsJonathan Hill, Siren Tan, Christopher Rider
Life of this patent
Estimating the term…
Abstract
The present invention relates to stabilising compositions, particularly stabilising compositions which can be used to stabilise insulation or semi-conductive compositions, such as are used for electrically insulating wires and cables. The stabilising composition comprises: a first stabilising component comprising at least one fully hindered phenolic antioxidant; a second stabilising component comprising at least one partially hindered phenolic antioxidant; and a third stabilising component comprising at least one sulphur-containing antioxidant.
Claims6
A stabilising composition for a polyethylene homopolymer or copolymer, comprising:
- a. a first stabilising component consisting of one or more of C13-C15 linear and branched alkyl esters of 3-(3′5′-di-t-butyl-4′-hydroxyphenyl) propionic acid;
- b. a second stabilising component consisting of 6-tert-butyl-2-methylphenol;
- and
- c. a third stabilising component consisting of ditridecylthiodipropionate;
- wherein the stabilising composition has a melting point of about 30C or lower, at atmospheric pressure of 101.325 kPa, and
- wherein
- the first stabilising component (a) is present in an amount ranging from about 25% to about 29% by weight of the stabilising composition,
- the second stabilising component (b) is present in an amount ranging from about 14% to about 25% by weight of the stabilising composition,
- the third stabilising component (c) is present in an amount ranging from about 50% to about 57% by weight of the stabilising composition.
Dependencies are inferred from the claim text.