Patent ID: 8178640

Claim:
A butt fused joint area between a pipe having a terminal edge and a second pipe having a terminal edge, the terminal edge of the first pipe and the terminal edge of the second pipe being butt fused to form a butt fused joint area such that an interior sidewall of the first pipe is free of overlap with an exterior sidewall of the second pipe and an interior sidewall of the second pipe is free of overlap with an exterior sidewall of the first pipe, wherein at least the butt fused joint area is prepared from a pipe composition comprising: (a) 80 to 99 weight percent polyvinyl chloride; (b) 0.001 to 1.5 weight percent heat stabilizer; (c) 0.1 to 5 weight percent of one or more divalent metal salts of one or more C 6 to C 32 linear, branched or cyclic alkyl, alkenyl, aryl, aralkyl or alkaryl carboxylic acids; (d) 0.1 to 5 weight percent wax; (e) 0.1 to 5 weight percent UV stabilizer; (f) 0.1 to 2 weight percent of filler; and (g) 0.001 to 2 weight percent processing aid, based upon total weight of the pipe composition.