Title:
METHOD FOR MANUFACTURING AN ALUMINOSILICATE GLASS SUBSTRATE FOR HARD DISKS
Document Type and Number:
WIPO Patent Application WO/2011/132665
Kind Code:
A1
Abstract:
The disclosed method for manufacturing an aluminosilicate glass substrate for hard disks includes a step in which an aluminosilicate glass substrate is polished using a liquid polishing composition that contains silica particles, a polymer containing sulfonic acid groups, and water, with the adsorption constant of said polymer with respect to aluminosilicate glass being between 1.5 and 5.0 L/g. Said polymer preferably contains an aromatic ring and has a weight-average molecular weight preferably between 3,000 and 100,000.
Inventors:
DOI Haruhiko (())
土居陽彦 (())
UCHINO Yosuke (())
土居陽彦 (())
UCHINO Yosuke (())
Application Number:
JP2011/059605
Publication Date:
October 27, 2011
Filing Date:
April 19, 2011
Export Citation:
Assignee:
KAO CORPORATION (14-10, Nihonbashi Kayabacho 1-chome Chuo-k, Tokyo 10, 〒1038210, JP)
花王株式会社 (〒10 東京都中央区日本橋茅場町一丁目１４番１０号 Tokyo, 〒1038210, JP)
DOI Haruhiko (())
土居陽彦 (())
花王株式会社 (〒10 東京都中央区日本橋茅場町一丁目１４番１０号 Tokyo, 〒1038210, JP)
DOI Haruhiko (())
土居陽彦 (())
International Classes:
B24B37/00; C09K3/14; G11B5/84
Attorney, Agent or Firm:
IKEUCHI SATO & PARTNER PATENT ATTORNEYS (26th Floor, OAP TOWER 8-30, Tenmabashi 1-chome, Kita-ku, Osaka-sh, Osaka 26, 〒5306026, JP)
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Claims: