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:
Jul. 04, 2017
Filed:
Mar. 06, 2014
Unimatec Co., Ltd., Tokyo, JP;
Hirosaki University, Aomori, JP;
Katsuyuki Sato, Ibaraki, JP;
Hideo Sawada, Aomori, JP;
Unimatec Co., Ltd., Toyko, JP;
Hirosaki University, Aomori, JP;
Abstract
Disclosed is a fluorine-containing oligomer comprising a copolymer of a fluoroalkyl alcohol (meth)acrylic acid derivative of the formula: CF(CH)OCOCR═CH[I], wherein R is a hydrogen atom or a methyl group, n is an integer of 1 to 10, and d is an integer of 1 to 6; and a (meth)acrylic acid derivative of the formula: (CH═CRCO)R' [II], wherein R is a hydrogen atom or a methyl group, m is 1, 2, or 3; and when m is 1, R′ is —OH group, NHgroup that is unsubstituted or mono- or di-substituted with an alkyl group having 1 to 6 carbon atoms, or a monovalent group derived from an alkylene glycol or polyalkylene glycol group containing an alkylene group having 2 or 3 carbon atoms; when m is 2 or 3, R′ is a divalent or trivalent organic group derived from a diol or triol. The copolymerization reaction is performed using a hydrocarbon-based peroxide or azo compound polymerization initiator. Also disclosed are nano-silica composite particles formed as a condensate of the fluorine-containing oligomer and an alkoxysilane with nano-silica particles.