Extrudable compounded polyvinyl chloride

An extruded compounded polyvinyl chloride film having a thickness in the range of about 0.5 to about 4.5 mils prepared by the method which comprises (A) dry blending materials to a free flowing granular mixture, (B) pelletizing said mixture and (C) extruding said pellatized mixture, as a melt, through a die having a temperature in the range of about 170.degree. C. to about 220.degree. C., said dry blend materials comprising (1) 100 parts by weight particulate polyvinyl chloride resin, about 20 to 32 parts by weight of at least one plasticizer selected from at least one of di(2-ethylhexyl) adipate, epoxidized soyabean oil, epoxidized linseed oil, acetyl tributylcitrate, butylbenzylphthalate, dibutyl sebacate, butyl stearate, acetyl triethyl citrate, p-tert-butyl-phenyl salicylate, butylphthalyl butyl glycolate, di-(2-ethylhexyl)phthalate, diethyl phthalate, diisobutyl adipate, diisooctyl phthalate, dipehenyl-2-ethylhexyl phosphate, ethylphthalyl ethyl glycolate, glycerol monooleate, monoisopropyl citrate, mono-, di- and tristearyl citrate, triacetin (glycerol triacetate), triethyl citrate, 3-(2-xenoyl)-1,2-epoxypropane, 1,3-butylene glycol adipic acid polyester of about 1700 to about 2200 molecular weight terminated with at least one organic acid selected from myristic, palmitic and stearic acids, dicyclohexyl phthalate, di(2-ethylhexyl)-azelate, di-n-hexyl azelate, dihexyl phthalate, diphenyl phthalate, epoxidized butyl esters of linseed oil fatty acids, diisononyl adipate and iisononyl phthalate, (2) from about 0.1 to about 2.5 parts by weight of a pigment having an average particle size in the range of about 2 to about 10 microns selected from pigments comprised of about 50 to about 100 weight percent silica (SiO.sub.2), and corresponding from none to about 50 weight percent other oxides selected from aluminum, magnesium, calcium, iron, potassium and sodium, (3) from about 0.75 to about 7 parts by weight of a heat stabilizer selected from stannous stearate, magnesium stearate and a mixture comprising zinc stearate and calcium stearate in a zinc to calcium weight ratio of about 1:1 to about 3.9:1, (4) from about 0.25 to about 2.5 parts by weight of tris-nonylphenyl phosphite as the chelator, (5) from about 0.2 to about 1.5 parts by weight of a lubricant selected from alcohol esters, amide waxes, fatty acids fatty acid esters, fatty alcohols, glycerol esters, glycol esters metallic stearates and ricinoleates, paraffin waxes, synthetic waxes, polyethylene waxes, modified polyethylene waxes, vinyl ethers, triglycerides, wax acid, and wax esters;

• (6) from about 2 to about 9 parts by weight of at least one surfactant selected from:
• polyoxyethylene(20) sorbitan monooleate, the mono and diglycerides of fat-forming fatty acids, a nonylphenoxy polyoxyethylene ethanol containing 4 to 5 moles of ethoxylate, glycerol monooleate, sorbitan monooleate, polyoxyethylene(9)monooleate, .alpha.-alkyl-, .alpha.-alkenyl and .alpha.-alkylaryl-omega-hydroxypoly(oxyethylene) comprised of at least one of .alpha.-(2,4,6-triisobutylphenol)-omega-hydroxypoly(oxyethylene), .alpha.-(Z)-9-octadecenyl-omega-hydroxypoly (oxyethylene), and .alpha.-alkyl(C.sub.16 -C.sub. 18)-omega-hydroxypoly(oxyethylene) .alpha.-alkyl-omega-hydroxypoly(oxyethylene) derived from ethylene oxide and C.sub.11 -C.sub.15 straight chain secondary alcohols, n-alkylsulfonate where said alkyl group has 10-18 carbon atoms, .alpha.-di-sec-butylphenyl-omega-hydroxypoly(oxyethylene) derived from ethylene oxide and di-sec-butylphenol, .alpha.-dodecyl-omega-hydroxypoly (oxyethylene) mixture of dihydrogen phosphate and monohydrogen phosphate esters derived from esterification of the product of ethylene oxide and n-dodecyl alcohol, .alpha.-(p-dodecylphenyl)-omega-hydroxypoly(oxyethylene) derived from ethylene oxide and dodecylphenol .alpha.-(p-nonylphenyl)-omega-hydroxypoly(oxyethylene) mixture of dihydrogen phosphate and monohydrogen phosphate esters derived from esterification of .alpha.-(p-nonylphenyl)-omega-hydroxypoly(oxyethylene) derived from condensation of nonylphenol and ethylene oxide, .alpha.-(p-nonylphenyl)-omega-hydroxypoly(oxyethylene) sulfate, ammonium and sodium salts where said nonyl group is a propylene trimer isomer and said poly(oxyethylene) content averages about 4 moles, poly(oxypropylene) block polymer with poly(oxyethylene) having an average molecular weight of about 11,000 to about 18,000, polyoxyethylene(20)sorbitan monostearate, polyoxyethylene (20) sorbitan tristearate, polyoxyethylene(20) sorbitan monooleate, polyoxyethylene(20) sorbitan trioleate, sodium n-alkylbenzene-sulfonate where said alkyl group contains an average of about 10 to about 16 carbon atoms, sorbitan monopalmitate, sorbitan monostearate, sorbitan trioleate, sorbitan tristearate, .alpha.-]p-(1,1,3,3,-tetramethylbutyl)phenyl]-omega-hydroxy poly(oxyethylene) derived from ethylene oxide and p-(1,1,3,3,-tetramethylbutyl)phenol, tetrasodium 28 N-(1,2-dicarboxyethyl)-N-octadecyl-sulfosuccinamate, and .alpha.-tridecyl-omega-hydroxypoly(oxyethylene) mixture of dihydrogen phosphate and monohydrogen phosphate esters derived from esterification of the product of ethylene oxide and tridecyl alcohol, (7) and from about 0.1 to about 0.6 part by weight of a slip-antiblock agent selected from at least one of the group consisting of ethylene-N,N'-bis-oleamide, hydrofol glyceride, hydrogenated fish oil, calcium ricinoleate and fatty acid amides selected from amides with aliphatic hydrocarbon chains containing in the range of about 16 to 40 even numbered carbon atoms, said hydrocarbon chains being saturated or partly unsaturated with 1 to 2 carbon-to-carbon double bonds of unsaturation.