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Title:
無電解ニッケル−リンめっきされたアルミニウム磁気ディスク基板用研磨剤組成物
Document Type and Number:
Japanese Patent JP6659449
Kind Code:
B2
Abstract:
Embodiments provide a polishing composition for a magnetic disc substrate including colloidal silica, a phosphorus-containing compound, a water-soluble polymer compound, and water. According to at least one embodiment, the water-soluble polymer compound is a copolymer having a structural unit derived from an unsaturated aliphatic carboxylic acid and a structural unit derived from an unsaturated amide.

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Inventors:
Junichiro Ando
Application Number:
JP2016093805A
Publication Date:
March 04, 2020
Filing Date:
May 09, 2016
Export Citation:
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Assignee:
Yamaguchi Seiken Industry Co., Ltd.
International Classes:
G11B5/84; B24B37/00; C09K3/14; H01L21/304
Domestic Patent References:
JP2001064681A
JP2011240478A
JP2015204127A
JP2012025873A
Attorney, Agent or Firm:
Ippei Watanabe
Shigeru Koike
Nagaoka Norio
Satoshi Asakura



 
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