PHOTOCHROMIC SHEET, PHOTOCHROMIC BODY, INTERMEDIATE FILM FOR LAMINATED GLASS, AND LAMINATED GLASS

WIPO Patent Application WO/2012/036291

A1

The purpose of the present invention is to provide a highly light-resistant photochromic sheet in which light transmissivity is varied by the application of voltage and in which yellowing and discoloration are reduced even after long-term use; and to provide a photochromic body produced using the photochromic sheet; an intermediate film for laminated glass; and laminated glass produced using the intermediate film for laminated glass. The present invention provides a photochromic sheet having an electrolyte layer and an electrochromic layer that contains an electrochromic compound and is formed on at least one surface of the electrolyte layer, wherein the electrolyte layer contains a binder resin, a supporting electrolyte salt, a solvent, and an ultraviolet absorber having the benzotriazole structure represented by general formula (1). In formula (1), R1 and R2 represent alkyl groups, cycloalkyl groups, aryl groups, or aralkyl groups.

NAKAJIMA DAISUKE (JP)
YAHARA KAZUYUKI (JP)
ANDO TSUTOMU (JP)
OOWASHI KEIGO (JP)
WADA ATSUSHI (JP)

PCT/JP2011/071273

March 22, 2012

September 16, 2011

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SEKISUI CHEMICAL CO LTD (JP)
NAKAJIMA DAISUKE (JP)
YAHARA KAZUYUKI (JP)
ANDO TSUTOMU (JP)
OOWASHI KEIGO (JP)
WADA ATSUSHI (JP)

B32B7/02; B32B27/18; B32B27/30; C03C27/12; C08K3/16; C08K3/18; C08K5/00; C08K5/3475; C08L29/14; C08L49/00; G02F1/1503

JP2007526926A	2007-09-20
JP2009516759A	2009-04-23
JPH04214539A	1992-08-05

YASUTOMI & Associates (JP)
Patent business corporation Yasutomi international patent firm (JP)

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