Silica base particles and production process for same
AssigneeNippon Shokubai Co., Ltd.
InventorsJiro Iriguchi, Shuji Shimizu, Yasuhiro Yamamoto, Hideki Oishi
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Abstract
Provided is a silica base particle having an average particle diameter of 0.01 to 10 .mu.m, wherein carboxylic esters are present on the surface of the above particle in a proportion falling in a range of 0.05 to 10% by weight based on the weight of the above particle. A polyester film containing the above silica base particles shows an excellent lubricant property and scratch resistance.
Claims5
A silica base particle having an average particle diameter of 0.01 to 10 .mu.m, wherein aromatic dicarboxylic diesters are present on the surface of said particle in a proportion falling in a range of 0.05 to 10% by weight based on the weight of said particle.
Dependencies are inferred from the claim text.