| 摘要 |
PURPOSE: To obtain a composition, industrially useful as an optical filter, a heat ray absorbing glazing material, etc., due to its manifestation of excellent near infrared absorptivity without causing the instability such as fading and the photochromism such as fading by allowing thereof to stand in the dark for a long period. CONSTITUTION: The characteristic of this near infrared ray absorbing transparent resin composition comprises thermally kneading 100 pts.wt. transparent resin with 0.01-5 pts.wt. cupric sulfide having 0.05-4μm average particle diameter. Furthermore, this near infrared absorbing transparent resin molding is obtained by molding the composition into a sheetlike or a filmlike shape. Since the near infrared absorbing sheet thus obtained has a strong absorptivity over the whole near infrared region of 800-2000nm wavelength, the sheet can be utilized as an optical material such as a near infrared cutting filter, a recording material, a heat ray screening material, a thermal storage material, a near infrared detecting sensor, etc.
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