C - Chemistry – Metallurgy – 01 – F
Patent
C - Chemistry, Metallurgy
01
F
C01F 7/02 (2006.01) B24B 1/00 (2006.01) C01F 7/30 (2006.01) C01F 7/44 (2006.01) C09G 1/02 (2006.01) C09K 3/14 (2006.01)
Patent
CA 2519501
The present invention provides .alpha.-alumina powders comprising .alpha. - alumina particles of which at least 80% of the .alpha. -alumina particles have a particle size of less than 100nm. The invention also provides slurries, particularly aqueous slurries, which comprise .alpha. -alumina powders of the invention. The invention further provides methods of manufacturing .alpha. - alumina powders and .alpha. -alumina slurries of the invention and methods of polishing using same.
La présente invention concerne des poudres d'alpha-alumine comprenant des particules d'alpha-alumine. Au moins 80 % des particules d'alpha-alumine ont un calibre inférieur à 100 nm. L'invention concerne également des suspensions épaisses, en particulier des suspensions épaisses aqueuses, comprenant les poudres d'alpha-alumine de l'invention. L'invention concerne également des procédés destinés à la fabrication des poudres et des suspensions épaisses d'alpha-alumine de l'invention, ainsi que des procédés de polissage utilisant ces poudres.
Gowling Lafleur Henderson Llp
Saint-Gobain Ceramics & Plastics Inc.
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