Ecolab USA Inc.

Sean McCue

Kim Long

Michael A Kamrath

Kim Marie Long

Described herein are compositions, kits and methods for polishing sapphire surfaces using compositions having colloidal aluminosilicate particles in an aqueous acidic solution. In some aspects, the methods for polishing a sapphire surface may include abrading a sapphire surface with a rotating polishing pad and a polishing composition. The polishing composition may include an amount of a colloidal aluminosilicate and may have a pH of about 2.0 to about 7.0.

Methods of polishing sapphire surfaces

Kits for polishing sapphire surfaces are disclosed. The kits have compositions including colloidal silica and the colloidal silica has a broad particle size distribution. The kits also include a polishing pad. The polishing pad may include polyurethane impregnated with polyester and it may have a compressibility of about 1% to about 40% and a Shore D hardness of about 50 to about 60.

Kit for polishing sapphire surfaces

Described herein are methods for polishing sapphire surfaces using compositions comprising colloidal silica, wherein the colloidal silica has a broad particle size distribution.

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Chicago, IL, United States of America

Sean McCue