Patent ID: 7928169

Claim:
A melt processed article having improved surface smoothness, comprising: a composition derived from a chlorinated polyvinyl chloride (CPVC) having a chlorine content of from about 60% to about 75% by weight, wherein the polyvinyl chloride precursor has an inherent viscosity of from about 0.8 to about 1.2 per ASTM-D1243; from about 3 to about 12 parts by weight per 100 parts by weight of said CPVC of an impact modifier derived from an organosiloxane monomer and at least one acrylic monomer; from about 0.2 to about 2.5 parts by weight per 100 parts by weight of said CPVC of an aluminosilicate zeolite in particle form; wherein said zeolite particles have a mean particle diameter in the range of about 0.25 to about 1.5 microns and wherein said zeolite contains from 1% to 30% by weight water; and from about 1.0 to about 2.0 parts by weight per 100 parts by weight of said CPVC of a metal containing stabilizer.