Patent ID: 6608115
Filing Date: 2003-08-19
Classification: C08J,C08L

Abstract:
A dry, particulate polyvinyl chloride dispersion resin for use in the production of whitened polyvinyl chloride foam comprising vinyl chloride polymer and(A) from about 0.01 to about 5 parts by weight per hundred parts by weight of said dry, particulate polyvinyl chloride dispersion resin of at least one first additive selected from the group consisting of: i) a sulfonic acid derivative having the formula Râ€”SO3M wherein R is an alkyl, alkylaryl or an arylalkyl group containing from 1 to 12 carbon atoms and wherein M is selected from hydrogen and monovalent metals; ii) a sulfinic acid derivative having the formula Râ€”SO2M wherein R is an alkyl, alkylaryl or an arylalkyl group consisting from 1 to 12 carbon atoms and wherein M is selected from the group consisting of hydrogen and monovalent metals; and iii) mercapto acetic acid sodium salt; (B) and optionally containing at least one second additive selected from the group consisting of: i) at least one water soluble metal salt selected from the group consisting of water soluble salts of alkali metals, alkaline-earth metals and transition metals; and ii) t-butyl hydroperoxide.