Near-infrared absorbing compound and near-infrared absorbing filter using same

A near-infrared and compound technology, which is applied in the fields of near-infrared absorbing compositions, near-infrared absorbing compounds, and near-infrared absorbing filter materials, can solve the problems that cannot be practically applied, that there is no relevant data, and the molar absorption coefficient is low.
CN1742214AInactive Publication Date: 2006-03-01NIPPON KAYAKU CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NIPPON KAYAKU CO LTD
Publication Date
2006-03-01
Estimated Expiration
Not applicable · inactive patent

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Abstract

A near-infrared absorbing filter which does not contain antimony, arsenic or the like and is excellent in heat resistance is disclosed. The near-infrared absorbing filter is characterized by containing a compound composed of a salt of cations obtained by oxidizing a substance represented by the formula (1) below and anions (X), which are alkylsulfonic acid ions having 1-8 carbon atoms that are necessary for neutralizing the cations and not substituted or may be substituted with a halogen atom, a lower alkoxy group, a cyano group, or a hydroxyl group. (1) (in the formula (1), rings A and B may have a substituent, and R1-R8 independently represent a substituted or non-substituted alkyl group, cycloalkyl group, alkenyl group or aryl group having 1-8 carbon atoms.
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Description

technical field

[0001] The present invention relates to a kind of near-infrared absorption compound, and it has excellent heat resistance, and is harmless; It relates to a kind of near-infrared absorption filter material; It relates to a kind of near-infrared absorption composition; Near-infrared absorption filter material for display panels. Background technique

[0002] Diimonium salt compounds and ammonium salt compounds have been widely recognized as near-infrared absorbers (for example, see Japanese Patent Publication (KOKOKU) No. 7-51555 (page 2), Japanese Patent Application Laid-Open (KOKAI) No. 10-316633 (page 5), and Japanese Patent Publication (KOKOKU) No. 43-25335 (pages 7-14)), and are widely used, such as being used in near-infrared absorption filter materials, for heat shielding films, sunglasses, etc. . Among these compounds, the counter ions are hexafluoroantimonate ions, respectively, those of hexafluoroarsenate ions are excellent in heat resistance, and c...

Claims

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