31results about "Indamines/indophenols" patented technology

Provided is a near-infrared absorptive coloring matter that enables the production of a near-infrared blocking filter having excellent transparency, heat resistance and moist heat resistance. The near-infrared absorptive coloring matter is characterized by consisting of a noncrystalline body of a diimonium salt represented by general formula (1).

A near-infrared-absorbing film which is excellent in heat resistance and moist-heat resistance and retains optical properties including satisfactory near-infrared-absorbing ability. The near-infrared-absorbing film comprises a transparent base and a pressure-sensitive adhesive layer formed on one side of the base from a pressure-sensitive adhesive comprising a near-infrared-absorbing dye and a copolymer of a constituent monomer which is a C5-10 cycloalkyl ester of (meth)acrylic acid. This near-infrared-absorbing film may be laminated to other functional film(s) to give a laminate useful as anoptical filter for PDPs.

Provided is, for example, a compound excellent in light fastness and storage stability. The compound is characterized by having a structure represented by the following formula (1) or (2).

The present invention discloses an infrared absorption filter which enables a coloring matter having infrared absorptivity to be contained or dispersed uniformly in a high concentration and has excellent durability, and an infrared absorption panel comprising this infrared absorption filter. The infrared absorption filter comprises a polycarbonate resin which contains 20 to 100 mol % of a recurring unit having a fluorene skeleton represented by the formula (1) and 0 to 80 mol % of a recurring unit represented by the formula (2), and a coloring matter having infrared absorptivity.

Provided is, for example, a compound excellent in light fastness and storage stability. The compound is characterized by having a structure represented by the following formula (1) or (2).

An indaniline dye represented by the following formula (1):wherein R1 and R2 represent an unsubstituted linear or branched alkyl group having from 2 to 5 carbon atoms; R3 represents an unsubstituted linear or branched alkyl group having from 1 to 3 carbon atoms; provided that the total number of the carbon atoms of R1, R2 and R3 is 6 or 7.

The present invention provides a paint containing an infrared absorbing pigment (A), a resin (B) and a solvent (C) and diacetone alcohol as an essential component of the solvent (C), and a near infrared absorbing filter formed using the paint. The infrared absorbing dye (A) is preferably a diimonium compound, especially a diimonium compound represented by the following general formula (I). In the formula, R11, R12, R13, R14, R15, R16, R17, and R18 represent a hydrogen atom or a C1-10 alkyl group that may have a substituent, and R19, R20, R21, and R22 represent a hydrogen atom, a halogen atom, and may have A C1-10 alkyl group of the substituent or an amino group that may have a substituent, the methylene group in the above-mentioned alkyl group may be substituted by -O- or -CH=CH-, t represents the number of 1 to 4, and Anq- represents q Valence anions.

This invention provides a wavelength-selective absorption optical filter that exhibits high level and broad absorption in a near infrared region, further absorbs neon light, and exhibits high light transmittance in other visible light region. The wavelength-selective absorption optical filter is less likely to cause a change in optical properties with the elapse of time and is highly durable. The wavelength-selective absorption optical filter comprises a transparent base material and a wavelength-selective absorption layer having a single or multilayer structure stacked on the base material. The wavelength-selective absorption layer comprises a resin, an near infrared absorptive coloring matter (A) and a coloring matter (B), and the wavelength-selective absorption optical filter has maximum absorption at a wavelength of 800 to 1200 nm and a wavelength of 550 to 620 nm. The wavelength-selective absorption optical filter is characterized in that one type of the near infrared absorptive coloring matter (A) is an aromatic diimmonium coloring matter (a) of which the counter ion is bis(trifluoromethansulfonyl)imidic acid, and one type of the coloring matter (B) is a porphyrin coloring matter or azaporphyrin coloring matter (b).

The invention provides a near-infrared absorbing material, including: at least one of at least one singlet oxygen scavengers, at least one radical scavenger, and at least one antioxidant; and at least one near-infrared absorbing compound obtained by oxidation of a compound represented by the following Formula (II).In the formula, R211, R212, R221, R222, R231, R232, R241 and R242 independently represent a hydrogen atom or an aliphatic or aromatic group; R203, R213, R223, R233 and R243 independently represent a substituent; and n203, n213, n223, n233 and n243 independently represent an integer of 0 to 4.

The present invention relates to isolated nucleic acid constructs containing a sequence encoding a Polyporus laccase, and the laccase proteins encoded thereby.

The invention provides dyes for optical disc recoding media, having the general formula:wherein m, n is independently selected from integers 0-3; X represents oxygen, sulfur, C—R1, or N—R2R3; Y is oxygen or sulfur; each of R1, R2, and R3 can be the same or different; and Z⊕ is a cation. The dyes have a maximum absorption in wavelength of 300-500 nm and can be used in recording layers of high density optical disc recording media.