| 摘要 |
<p>PURPOSE:To obtain abrasive composition having improved polishing speed and giving a polished product having excellent surface state by dispersing alumina in an aqueous medium and compounding aluminum sulfate, etc., and a specific water-soluble oxidizing agent as polishing accelerators to the dispersion. CONSTITUTION:The objective composition can be produced by dispersing 1-30-wt.%, preferably 2-15wt.% (based on the total composition) of alumina (preferably alpha-alumina) in an aqueous medium and compounding the dispersion with a polishing accelerator consisting of (A) 0.01-20wt.% (preferably 0.1-10wt.%) of aluminum sulfate and/or aluminum chloride and (B) usually 0.05-2 pts.wt., preferably 0.1-1 pt.wt. (based on 1 pt.wt. of the component A) of one or more water-soluble oxidizing agents selected from peroxide, nitric acid (salt), nitrite and aromatic nitro compound.</p> |
