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:
Sep. 17, 2013
Filed:
May. 13, 2011
Naoki Hayashida, Tokyo, JP;
Kazushi Tanaka, Tokyo, JP;
Jiro Yoshinari, Tokyo, JP;
TDK Corporation, Tokyo, JP;
Abstract
The present invention provides a hologram recording material and a hologram recording medium that can stably maintain the shape of a recording layer and achieve high diffraction efficiency. A hologram recording material comprising a photoradical polymerizable compound (A), a photopolymerization initiator (B), and a dispersion medium (C). The medium (C) is selected from the group consisting of: a compound of the formula (I): wherein Ris a divalent Chydrocarbon group, Rand Reach independently represent a Chydrocarbon group, k, l, m and n are each independently a number of 0 or more and 5 or less; and a compound of the formula (II): wherein Rrepresents a divalent Chydrocarbon group, Rand Reach independently represent a Chydrocarbon group, and at least one of Rand Rrepresents a Chydrocarbon group.