The B. F. Goodrich Company

Ervin J Williger

William J Kroenke

A pigmented vinyl chloride composition is provided which has a whitening and opacifying package comprising titanium dioxide and a titanium dioxide replacement/extender. The replacement/extender replaces up to 30 percent by weight of the titanium dioxide and yet maintains one or more selected optical property as if the whitening and opacifying package were pure titanium dioxide. These optical properties include the Yellowness Index, the DE* value and the percentage light transmittance. The extender is one or more of an alkaline earth metal titanate, lanthanide titanate, or aluminum titanate.

Metal titanates as partial replacements for titanium dioxide in

Disclosed are polyvinyl chloride and polyvinyl chloride type compositions using a titanium dioxide based whitening/opacifying package containing up to about 30 percent by weight of an aluminosilicate composition. In the whitening/opacifying package the aluminosilicate composition acts as a replacement for the same amount by weight of titanium dioxide. The whitening/opacifying package achieves a measure of overall appearance (DE* value), a Yellowness Index, and a percentage of light transmitted (opacity) which are substantially comparable or superior to those achieved by the same weight of pure titanium dioxide.

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Tallmadge, OH, United States of America

Ervin J Williger