US 5,902,849 A · Filling compound

Abstract

A filling compound for electrical and optical equipment in the form of cables, connectors, plugs etc. and to assemblies thus produced, is provided. Electrical and optical equipment in the form of cables, connectors, plugs etc. have to be protected against harmful influences penetrating from outside, particularly water, and also against mechanical damage during laying or as a result of exposure to heat. The filling compound is based on a stellate substance, i.e. a substance having a branched molecular structure in which, ideally, 3 or more branches, more particularly polymeric chains, radiate from a single branching point. The filling compound is flexible at very low temperatures but, on the other hand, does not run out, even at extremely high temperatures.

Claims31

Dependent claims

A filling compound for electrical and optical equipment comprising at least one stellate substance selected from the group consisting of poly-olefins wherein the ratio of carbon atoms forming the main chain to carbon atoms forming the side chains is less than 1:3 and polyesters having at least three ester containing groups radiating from a single branching point, wherein the stellate composition has a viscosity of from 10 to 500 mm.sup.2 /s at 40.degree. C. according to ASTM D445;

and wherein the filling compound does not contain a thixotropic agent.

Dependencies are inferred from the claim text.

Filling compound

Life of this patent

Filling compound

Life of this patent

Abstract

Claims31