Water/oil emulsion fuel
Wax anti-settling agents for distillate fuels
Wax composition
Wax crystal modifiers for petroleum oils
Wax-impregnated fire kindling sticks
Wax-impregnated fire kindling sticks
Winterized paraffin crystal modifiers
Zirconium additives for residual fuel oil
Zirconium additives for residual fuel oil
Zirconium-cerium additives for residual fuel oil
ZnO dispersions by decomposition of ZnCO.sub.3
Zwitterionic quaternary ammonium carboxylates, their metal salts