Polyvinyl Chloride Formulations

Abstract

An extrudable polyvinyl chloride composition comprising from 80 to 99.9 percent by weight polyvinyl chloride for use in extruding a first part and a second part, wherein a fusion joint between the first extruded part and the second extruded part is formed by: A) composition at least a portion of a first terminal edge of the first extruded part and a first terminal edge of the second extruded part; B) engaging the melted terminal edges; and C) maintaining pressure between the engaged terminal edges to create a fused joint having a strength that is at least 50% of the tensile strength of the extruded part as measured by ASTM D638-2a. The extruded parts can be pipe sections.

1 - 28 . (canceled) 
     
     
         29 . 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 of processing aid comprising methacrylic ester, acrylic ester, acrylonitrile, and/or styrene,   based upon total weight of the pipe composition, wherein the pipe composition is free of chlorinated polyethylene.   
     
     
         30 . The pipe composition according to  claim 29 , wherein the pipe composition is a fusion joint composition. 
     
     
         31 . The pipe composition according to  claim 29 , wherein the polyvinyl chloride comprises between 90 and 99 weight percent of the pipe composition. 
     
     
         32 . The pipe composition according to  claim 29 , wherein the polyvinyl chloride is virgin polyvinyl chloride. 
     
     
         33 . The pipe composition according to  claim 29 , wherein the heat stabilizer is an organotin heat stabilizer. 
     
     
         34 . The pipe composition according to  claim 29 , wherein the divalent metal salts of carboxylic acids comprise calcium stearate. 
     
     
         35 . The pipe composition according to  claim 29 , wherein the pipe composition comprises 0.1 to 2 weight percent calcium stearate. 
     
     
         36 . The pipe composition according to  claim 29 , wherein the wax is paraffin wax. 
     
     
         37 . The pipe composition according to  claim 29 , wherein the wax is oxidized polyethylene wax. 
     
     
         38 . The pipe composition according to  claim 29 , wherein the wax is paraffin wax and oxidized polyethylene wax. 
     
     
         39 . The pipe composition according to  claim 29 , wherein the pipe composition comprises 0.5 to 2 weight percent wax. 
     
     
         40 . The pipe composition according to  claim 29 , wherein the pipe composition comprises 0.001 to 1 weight percent processing aid. 
     
     
         41 . The pipe composition according to  claim 29 , wherein the pipe composition comprises 0.001 to less than 1 weight percent processing aid. 
     
     
         42 . The pipe composition according to  claim 29 , wherein the processing aid comprises an acrylic ester. 
     
     
         43 . The pipe composition according to  claim 29 , wherein the pipe composition further comprises up to 2 weight percent of pigment. 
     
     
         44 . A pipe composition according to  claim 29 , comprising:
 (a) 80 to 99 weight percent polyvinyl chloride;   (b) 0.001 to 1.5 weight percent heat stabilizer;   (e) 0.1 to 5 weight percent calcium stearate;   (d) 0.1 to 5 weight percent paraffin wax and oxidized polyethylene wax;   (e) 0.1 to 5 weight percent titanium dioxide;   (f) 0.1 to 2 weight percent of calcium carbonate; and   (g) 0.001 to 1.0 weight percent processing aid comprising methacrylic ester, acrylic ester, acrylonitrile, and/or styrene,   based upon total weight of the pipe composition, wherein the pipe composition is free of chlorinated polyethylene.   
     
     
         45 . A pipe composition according to  claim 29 , wherein the pipe composition consists essentially of:
 (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 calcium stearate;   (d) 0.1 to 5 weight percent paraffin wax and oxidized polyethylene wax;   (e) 0.1 to 5 weight percent titanium dioxide;   (f) 0.1 to 2 weight percent of calcium carbonate; and   (g) 0.001 to 1.0 weight percent processing aid comprising methacrylic ester, acrylic ester, acrylonitrile, and/or styrene,   based upon total weight of the pipe composition, wherein the pipe composition is free of chlorinated polyethylene.   
     
     
         46 . A pipe prepared extruded from the pipe composition of  claim 29 . 
     
     
         47 . The pipe according to  claim 46 , wherein the pipe is a water pipe having a burst strength of at least 200 psi as determined by ASTM D1785 in accordance with ASTM D1599 (Procedure B). 
     
     
         48 . The pipe according to  claim 46 , wherein the pipe is a gravity drain pipe, a sanitary pipe, a utility conduit, a water pipe, a sewer pipe, a pressurized pipe, a pipe inserted via horizontal directional drilling, a pipe used in slip lining, a pipe used in a pipe bursting application, a pipe used in guided boring, a pipe used in direct bury applications or any combination thereof. 
     
     
         49 . The pipe according to  claim 46 , wherein the pipe has a diameter of from 0.5 inches (1.27 cm) to 60 inches (153 cm). 
     
     
         50 . The pipe according to  claim 46 , wherein the pipe has a wall thickness of from 0.05 inches (0.125 cm) to 3 inches (7.6 cm). 
     
     
         51 . A pipe system comprising a first pipe, a second pipe and a fusion joint therebetween, wherein at least the fusion joint is prepared from the pipe composition of  claim 29 . 
     
     
         52 . 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 the pipe composition of  claim 29 .