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:
Jun. 21, 2011
Filed:
Aug. 20, 2009
Nobuyuki Otozawa, Chiyoda-ku, JP;
Nobuyuki Otozawa, Chiyoda-ku, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
To provide an antireflection coating composition having a low surface tension and excellent coating properties and capable of forming an antireflection film with a low refractive index, without use of PFOS nor PFOA having 7 or more carbon atoms. An antireflection coating composition which contains a fluorinated surfactant (A) containing a compound (A1) represented by the following formula (I), a water-soluble polymer (B) and an aqueous medium (C):R—O—(R—O)—R—X  (I)wherein Ris a linear or branched perfluoroalkyl group of which the terminal fluorine atom may be substituted by a hydrogen atom or a chlorine atom, each of Rand Rwhich are independent of each other, is a linear or branched perfluoroalkylene group, provided that the total number of carbon atoms in R, Rand Ris at most 5, n is 0 or an integer of at least 1, Xis —COOH or —C(CFZ)(CFZ)OH, which may form a salt, and each of Zand Zis a hydrogen atom, a fluorine atom, a chlorine atom or a trifluoromethyl group.