Paul R Lydigsen

US Patent:

60203870, Feb 1, 2000

Filed:

Sep 22, 1997

Appl. No.:

8/934744

Inventors:

William J. Downey - Somerset NJ
Christopher Andreola - Morristown NJ
Paul R. Lydigsen - Westmont IL
Wayne E. Wright - South Plainfield NJ

Assignee:

Caschem, Inc. - Bayonne NJ

International Classification:

C08G 1806

US Classification:

521 57

Abstract:

A low density polymer composition including a polymer component capable of being cured, a low density filler in an amount sufficient to reduce the density of the polymer and a thixotrope present in a sufficient amount to impart a sufficient viscosity and to inhibit separation of the filler from the polymer until after the polymer is cured. The resulting lightweight, filled polymer composition is a strong electrical insulator, has low shrinkage, a low coefficient of thermal expansion, low cured density and a soft filler that does not harden the polymer. Methods of preparing and using the low density polymer compositions are also disclosed.