| 摘要 |
<p>TITLE: METHODS OF MAKING COMBINED TITANIUM DIOXIDE AND CALCIUM CARBONATE AND OPAQUE PAPER CONTAINING THE RESULTING COMBINATION INVENTOR: ROBERT A. OLSON Method of making TiO2-CaCO3 combinations without involving a chemical reaction, said combinations, containing up to 50% CaCO3 in the combination, having the same scattering coefficient in paper as 100% TiO2 and method of making opaque paper containing the resulting combination.</p> |
