| 摘要 |
TO PROVIDE A POLISHING COMPOSITION WHICH ENABLES MAINTENANCE OF EXCELLENT PROPERTIES AND HIGH QUALITY OF THE SURFACE OF A HARD DISK WITHOUT LOWERING POLISHING RATE DURING POLISHING OF THE SURFACE,AND WHICH CAN PROVIDE A POLISHED SURFACE IN WHICH THE AMOUNT OF DUB-OFF IS CONSIDERABLY REDUCED AS COMPARED WITH THAT OF A CONVENTIONAL LEVEL,A POLISHING COMPOSITION CONTAINING WATER,A POLISHING MATERIAL (PARTICULARLY ALUMINA),A POLISHING ACCELERATOR,AND AT LEAST ONE OF HYDROXYPROPYL CELLULOSE AND HYDROXYALKYL ALKYL CELLULOSE IS PROVIDED. |
