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US 6,310,760 B1Granted
Adhesive, elastomeric gel impregnating composition
AssigneeSandia Corporation
InventorsDavid Glenn Shaw, John Randolph Pollard, Robert Aubrey Brooks
Life of this patent
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Abstract
An improved capacitor roll with alternating film and foil layers is impregnated with an adhesive, elastomeric gel composition. The gel composition is a blend of a plasticizer, a polyol, a maleic anhydride that reacts with the polyol to form a polyester, and a catalyst for the reaction. The impregnant composition is introduced to the film and foil layers while still in a liquid form and then pressure is applied to aid with impregnation. The impregnant composition is cured to form the adhesive, elastomeric gel. Pressure is maintained during curing.
Claims7
A capacitor roll comprising:
- a dielectric film layer;
- and
- a metal foil layer;
- wherein the film and foil layers are impregnated with an electrically insulating adhesive, elastomeric gel composition.
1 more element
Dependencies are inferred from the claim text.