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US 9,897,731 B2Granted
Infrared ray cutting film, infrared ray cutting laminated glass, and infrared ray cutting member
AssigneeFUJIFILM Corporation
InventorsShunya Katoh, Takao Taguchi, Kazuhiro Oki, Masaru Yoshikawa
Life of this patent
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Abstract
An infrared ray cutting film having a transparent base, a near infrared ray absorbing layer containing a compound of Formula (1) with a maximum absorption wavelength of from 750 nm to 920 nm, and a near infrared ray reflection layer obtained by fixing a cholesteric liquid crystal phase is excellent in invisibility, robustness and high heat shielding performance. R1a and R1b represent alkyl, aryl or heteroaryl; at least one of R2 and R3 is an electron-withdrawing group, and R4 represents H, alkyl, aryl, heteroaryl, substituted boron, or a metal.
Claims15
An infrared ray cutting film having a transparent base;
- a near infrared ray absorbing layer that contains a near infrared ray absorbent having a maximum absorption wavelength of from 750 nm to 920 nm;
- and at least one near infrared ray reflection layer obtained by fixing a cholesteric liquid crystal phase, wherein the near infrared ray absorbent is a compound represented by the following general formula (1):
- wherein in the general formula (1), R1a and R1b may be the same as or different from each other and each independently represent an alkyl group, an aryl group, or a heteroaryl group;
- R2 and R3 each independently represent a hydrogen atom or a substituent, at least one of R2 and R3 is an electron-withdrawing group, and R2 and R3 may be bonded to each other to form a ring;
- and R4 represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, substituted boron, or a metal atom, and R4 may be bonded to at least one of R1a, R1b, and R3 by a covalent bond or a coordinate bond;
- and
- wherein the transparent base, the at least one near infrared ray reflection layer and the near infrared ray absorbing layer are laminated in this order;
- and
- wherein at least one layer among all near infrared ray reflection layers has a maximum value of reflectance at 750 nm to 900 nm of 40% or more.
6 more elements
An infrared ray cutting laminated glass having two sheets of glass plates;
- and an infrared ray cutting film which is interposed between the glass plates,
- wherein the infrared ray cutting film has a transparent base;
- a near infrared ray absorbing layer that contains a near infrared ray absorbent having a maximum absorption wavelength of from 750 nm to 920 nm;
- and at least one near infrared ray reflection layer obtained by fixing a cholesteric liquid crystal phase, in which the near infrared ray absorbent is a compound represented by the following general formula (1):
- wherein in the general formula (1), R1a and R1b may be the same as or different from each other and each independently represent an alkyl group, an aryl group, or a heteroaryl group;
- R2 and R3 each independently represent a hydrogen atom or a substituent, at least one of R2 and R3 is an electron-withdrawing group, and R2 and R3 may be bonded to each other to form a ring;
- and R4 represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, substituted boron, or a metal atom, and R4 may be bonded to at least one of R1a, R1b, and R3 by a covalent bond or a coordinate bond.
4 more elements
A window having an infrared ray cutting film,
- wherein the infrared ray cutting film has a transparent base;
- a near infrared ray absorbing layer that contains a near infrared ray absorbent having a maximum absorption wavelength of from 750 nm to 920 nm;
- and at least one near infrared ray reflection layer obtained by fixing a cholesteric liquid crystal phase, in which the near infrared ray absorbent is a compound represented by the following general formula (1):
- wherein in the general formula (1), R1a and R1b may be the same as or different from each other and each independently represent an alkyl group, an aryl group, or a heteroaryl group;
- R2 and R3 each independently represent a hydrogen atom or a substituent, at least one of R2 and R3 is an electron-withdrawing group, and R2 and R3 may be bonded to each other to form a ring;
- and R4 represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, substituted boron, or a metal atom, and R4 may be bonded to at least one of R1a, R1b, and R3 by a covalent bond or a coordinate bond.
3 more elements
Dependencies are inferred from the claim text.