1 Introduction of CIR series - Near infra - red(IR)/heat absorption dye & pigment Contents 1. Comparison of the CIR series 2. Transmittance/Absorption spectrum 3. Heat resistance 4. Humidity resistance 5. Light stability 6. Solubility to typical solvents 7. Examples of application of the CIR dye/pigment
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Introduction of CIR series- Near infra-red(IR)/heat absorption dye & pigment
Contents
1. Comparison of the CIR series
2. Transmittance/Absorption spectrum
3. Heat resistance
4. Humidity resistance
5. Light stability
6. Solubility to typical solvents
7. Examples of application of the CIR dye/pigment
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Structure of the CIR dye
✔ High near IR radiation (780nm~1500nm) absorption ability
✔ High transmittance for visible light
✔ Solubility and durability can be adjusted by choice of “R” and “X”.
1. Comparison of the CIR series
Product type
Form Characteristics use with
CIR-RL dye durable thermo-plastic binders
CIR-FS265 pigment blue - shifted UV hard coatings, adhesives
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2. Transmittance/Absorption Spectrum - Film
<Test film structure>
Dye/PMMA (6~8μm)
PET (50μm)
400 600 800 1000 1200 1400
0
20
40
60
80
100
Tra
nsm
itta
nce /
%
Waveength / nm
CIR-RL CIR-FS265
wavelength/nm
transm
itta
nce/%
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2. Absorption Spectrum - Mass Absorption Coefficient
Product type
λmax/nmmass absorption
coefficient/L(g・cm)-1 solvent
CIR-RL 1070 ~ 1090 ≧ 66.2 acetone
CIR-FS265 1055 ~ 1075 ≧ 51.0 acetone
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3. Heat Resistance (CIR-RL)
b* indicates color change over time.
The larger the b* is, the more yellowish films are.