| http://www.w3.org/ns/prov#value | - Furthermore, for many purposes, it may be desirable to compound the rubber compositions of the present invention with other conventional rubber additives. lllustrative of such additives are other materials such as titanium dioxide, silicon dioxide, zinc oxide, calcium carbonate, clays, calcium silicate, zinc sulfide, hydrous alumina and calcined magnesia; thermoplastic resins such as polyvinyl chl
|
