Acrylate coating material

A wound capacitor comprising;

• a polypropylene or polyester dielectric sheet wound into a cylinder;
• a layer of crosslinked acrylate deposited on a face of the dielectric sheet, the acrylate layer being formed from acrylate monomer having a molecular weight in the range of from about 150 to 600 and including at least a portion of polyfunctional acrylate molecules for crosslinking;
• a metallized conductive layer deposited over the acrylate layer;
• a second layer of crosslinked acrylate deposited over the conductive layer;
• and
• a dielectric liquid filling the capacitor.

Metallized capacitor sheet for forming a wound capacitor comprising:

• a thermoplastic polypropylene or polyester dielectric sheet;
• a metallized conductive layer deposited on at least one face of the dielectric sheet;
• a first layer of polymerized acrylate deposited on the same face of the dielectric sheet as the conductive layer;
• and
• a second layer of polymerized acrylate deposited on the face of the dielectric sheet opposite from the face having a conductive layer for isolating the dielectric sheet, the acrylate layers being formed from acrylate monomer having a molecular weight in the range of from about 150 to 600 and including at least a portion of polyfunctional acrylate molecules for crosslinking.

A barrier sheet with low oxygen permeability comprising:

• a polypropylene, polyester or nylon sheet substrate;
• a first crosslinked evaporated acrylate layer covering one entire face of the substrate, the acrylate layer being a polymerization product of acrylate monomer having a molecular weight in the range of from 150 to 600;
• and
• a layer of oxygen barrier material selected from the group consisting of silicon oxide, aluminum oxide and metal, vapor deposited over the first acrylate layer and covering the entire face of the sheet;
• and
• a second crosslinked evaporated acrylate layer deposited over the oxygen barrier layer, the second acrylate layer also covering the entire face of the sheet and being a polymerization product of acrylate monomer having a molecular weight in the range of from 150 to 600.