WINDOW MATERIAL AND LIGHT-TRANSMISSIVE ROOF MATERIAL

WIPO Patent Application WO/2024/005148

A1

Provided are: a window material and a light-transmissive roof material which can autonomously change the cloudiness thereof in accordance with temperature, have an uncomplicated structure, and can be easily manufactured; a building comprising the window material and/or the light-transmissive roof material; and a corresponding vehicle, ship, or aircraft.　The window material or the light-transmissive roof material according to the present invention comprises at least one light-transmissive base material layer and at least one adhesive layer, wherein: the adhesive layer is formed from an adhesive composition containing 1 to 100 parts by mass of polymer fine particles with respect to 100 parts by mass of a thermosensitive adhesive; the refractive index of the thermosensitive adhesive increases as the temperature decreases, with the rate of increase in the refractive index being greater in the vicinity of the melting point of the thermosensitive adhesive than in a temperature range other than the vicinity of the melting point; and the adhesive power of the adhesive composition decreases as the temperature decreases, with the rate of decrease in the adhesive power being greater in the vicinity of the melting point of the thermosensitive adhesive than in the temperature range other than the vicinity of the melting point.

YAMAGUCHI SATOSHI (JP)
KATO TAKUMI (JP)

PCT/JP2023/024199

January 04, 2024

June 29, 2023

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NITTA CORP (JP)

E06B9/24; B32B7/023; B32B27/00; B32B27/18; B32B27/30; C09J11/08; C09J133/06; G02B5/00

JP2018178060A	2018-11-15
JP2021055089A	2021-04-08
JP2022013326A	2022-01-18
JP2021125516A	2021-08-30
JP2019055580A	2019-04-11

SHOBAYASHI Masayuki et al. (JP)

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