ABRADING AGENT AND ABRADING METHOD

• Main Authors: SHINODA TAKASHI, ONO HIROSHI, OKADA YUUHEI
• Format: Patent
• Language: English; French; Japanese
• Published: 19.08.2010
• Subjects: ADHESIVES; BASIC ELECTRIC ELEMENTS; CHEMISTRY; DRESSING OR CONDITIONING OF ABRADING SURFACES; DYES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS; GRINDING; MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE; METALLURGY; MISCELLANEOUS APPLICATIONS OF MATERIALS; MISCELLANEOUS COMPOSITIONS; NATURAL RESINS; PAINTS; PERFORMING OPERATIONS; POLISHES; POLISHING; POLISHING COMPOSITIONS OTHER THAN FRENCH POLISH; SEMICONDUCTOR DEVICES; SKI WAXES; TRANSPORTING

Disclosed is an abrading agent produced by adjusting the pH value of a composition comprising an inorganic acid, an amino acid, a protective film-forming agent, an abrasive grain, an oxidizing agent, an organic acid and water to 1.5 to 4, wherein the quantity of potassium hydroxide required for increasing the pH value of a composition obtained by removing the organic acid from the above-mentioned composition to 4 is 0.10 mol or more per 1 kg of the composition obtained by removing the organic acid from the above-mentioned composition, the organic acid contains two or more carboxyl groups, and the logarithm of the inverse of the first acid dissociation constant (pKa1) is 3 or less. La présente invention a trait à un agent abrasif produit en ajustant le pH d'une composition comprenant un acide inorganique, un acide aminé, un produit filmogène protecteur, un grain abrasif, un oxydant, un acide organique et de l'eau de 1,5 à 4, la quantité d'hydroxyde de potassium requise pour augmenter le pH d'une composition obtenue en supprimant l'acide organique de la composition susmentionnée jusqu'à 4 étant de 0,10 mole ou plus pour 1 kg de composition obtenue en supprimant l'acide organique de la composition susmentionnée, l'acide organique contenant deux groupes carboxyle ou plus, et le logarithme de l'inverse de la première constante de dissociation de l'acide (pKa1) étant inférieur ou égal à 3.