Patent ID: 8575260

Claim:
A positive temperature coefficient heating circuit comprising an encapsulant formed from an encapsulant composition consisting essentially of: (a) 70-97 wt % of a first organic medium, based on the total weight of the encapsulant composition, said first organic medium comprising 30-60 wt % thermoplastic fluoropolymer resin dissolved in a first organic solvent, wherein the weight percent of said thermoplastic fluoropolymer resin is based on the total weight of said first organic medium; and (b) 3-30 wt % of a second organic medium, based on the total weight of the encapsulant composition, said second organic medium comprising 10-50 wt % acrylic resin dissolved in a second organic solvent, wherein the weight percent of said acrylic resin is based on the total weight of said second organic medium; wherein said encapsulant composition has been heated to remove all solvent.