The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 22, 2015
Filed:
Dec. 21, 2011
Taku Kato, Funabashi, JP;
Keisuke Shuto, Funabashi, JP;
Junpei Kobayashi, Funabashi, JP;
Masayoshi Suzuki, Funabashi, JP;
Taku Kato, Funabashi, JP;
Keisuke Shuto, Funabashi, JP;
Junpei Kobayashi, Funabashi, JP;
Masayoshi Suzuki, Funabashi, JP;
NISSAN CHEMICAL INDUSTRIES, LTD., Tokyo, JP;
Abstract
There is provided a planarizing film-forming composition for a hard disk. A planarizing film-forming composition for a hard disk comprising a hydrophobic coating material having a photopolymerizable group and an aromatic group, containing a polymer or a combination of a polymer and a compound selected from the group consisting of a polymer (A1) including an aromatic group, having a molecular weight of 300 to 5000, and being a liquid at normal temperature under atmospheric pressure, a polymer (A2) including at least two photopolymerizable groups, having a molecular weight of 300 to 5000, and being a liquid at normal temperature under atmospheric pressure, a polymer (A3) including an aromatic group and at least two photopolymerizable groups, having a molecular weight of 300 to 5000, and being a liquid at normal temperature under atmospheric pressure, a compound (a1) including an aromatic group, having a molecular weight of 100 to 1000, and being a liquid at normal temperature under atmospheric pressure, a compound (a2) including at least two photopolymerizable groups, having a molecular weight of 100 to 1000, and being a liquid at normal temperature under atmospheric pressure, and a compound (a3) including an aromatic group and at least two photopolymerizable groups, having a molecular weight of 100 to 1000, and being a liquid at normal temperature under atmospheric pressure.