Polyvinyl chloride formulations

A pipe system comprising a first pipe having a terminal edge, 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 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 is prepared from a pipe composition consisting of:

• (a) 80 to 99 weight percent of polyvinyl chloride;
• (b) 0.001 to 1.5 weight percent of one or more heat stabilizers;
• (c) 0.1 to 5 weight percent of one or more C6 to C32 linear, branched or cyclic alkyl, alkenyl, aryl, aralkyl or alkaryl carboxylic acids, corresponding C1 to C4 alkyl esters and/or metal salts thereof;
• (d) 0.1 to 5 weight percent of one or more waxes;
• (e) 0.1 to 5 weight percent of one or more UV stabilizers;
• (f) 0.001 to 2 weight percent of one or more processing aids;
• (i) 0.1 to 2 weight percent of one or more fillers;
• and
• (j) optionally, up to 2 weight percent of one or more pigments,
• based upon total weight of the pipe composition.

A pipe system comprising a first pipe having a terminal edge, 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 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 is prepared from a pipe composition consisting of:

• (a) 92 to 95 weight percent polyvinyl chloride;
• (b) 0.5 to 1 weight percent of one or more heat stabilizers;
• (c) 0.5 to 1 weight percent of one or more C6 to C32 linear, branched or cyclic alkyl, alkenyl, aryl, aralkyl or alkaryl carboxylic acids, corresponding C1 to C4 alkyl esters and/or metal salts thereof;
• (d) 0.5 to 2 weight percent of one or more waxes;
• (e) 1.0 to 2.0 weight percent of one or more UV stabilizers;
• (j) 0.5 to 1.0 weight percent of one or more processing aids;
• (k) 0.1 to 1.9 weight percent of one or more fillers;
• and
• (l) optionally, up to 2 weight percent of pigment,
• based upon total weight of the pipe composition.

A pipe composition consisting of:

• (a) 85 to 99 weight percent of polyvinyl chloride;
• (b) 0.001 to 1.5 weight percent of heat stabilizer;
• (c) 0.1 to 5 weight percent of one or more C6 to C32 linear, branched or cyclic alkyl, alkenyl, aryl, aralkyl or alkaryl carboxylic acids, corresponding C1 to C4 alkyl esters and/or metal salts thereof;
• (d) 0.1 to 5 weight percent of wax;
• (e) 0.1 to 5 weight percent of UV stabilizer;
• (f) 0.001 to less than 1 weight percent of processing aid selected from the group consisting of methacrylic esters, acrylic esters, acrylonitrile, styrene, and combinations thereof;
• and
• (g) 0.1 to 5 weight percent of filler,
• based upon total weight of the pipe composition,
• (h) optionally, up to 2 weight percent of pigment, based upon the total weight of the pipe composition.