Patent ID: 8222325

Claim:
A thermoplastically processable polyvinyl chloride composition comprising polyvinyl chloride and a stabilizer composition comprising at least one metal ion and 0.1 to 15 parts of a heat-treated polyvinyl alcohol per 100 parts of polyvinyl chloride, the heat-treated polyvinyl alcohol having an absorbance (a) at a wavelength of 280 nm and an absorbance (b) at a wavelength of 320 nm, the absorbance (a) being greater than 0.1 and the ratio (b)/(a) being greater than 0.25, the absorbances (a) and (b) measured in 0.1 weight percent aqueous solution, the thermoplastically processable polyvinyl chloride composition obtained by adding the heat treated polyvinyl alcohol to solid polyvinyl chloride.