摘要:
The present invention provides a safe charge control agent which exhibits an excellent negative chargeability and excellent dispersibility in and compatibility with binder resins, and is even applicable for col or toners. Specifically, the charge control agent consists of a naphthol derivative of formula [I]: and a salt thereof, and an electrophotographic toner comprising the agent are provided.
摘要:
The present invention provides a novel naphthol derivative represented by the following general formula (I). The novel naphthol derivative of the present invention is useful as a positively electrifiable charge control agent. The present invention further provides an electrophotographic toner comprising a charge control agent comprising the novel naphthol derivative represented by formula (I).
摘要:
The present invention provides a novel naphthol derivative represented by the following general formula (I). The novel naphthol derivative of the present invention is useful as a positively electrifiable charge control agent. The present invention further provides an electrophotographic toner comprising a charge control agent comprising the novel naphthol derivative represented by formula (I).
摘要:
The present invention provides an alkylenebisnaphthol derivative represented by formula [I]: and a salt thereof. The compound of the present invention has an excellent triboelectric charge property and useful as charge control agent for electrophotographic toners.
摘要:
The present invention provides a safe charge control agent which exhibits an excellent negative chargeability and excellent dispersibility in and compatibility with binder resins, and is even applicable for col or toners. Specifically, the charge control agent consists of a naphthol derivative of formula [I]: and a salt thereof, and an electrophotographic toner comprising the agent are provided.
摘要:
The present invention provides a method for producing a hydroxybenzoic acid compound comprising, dehydrating a phenol compound and an alkaline metal compound to form the alkaline metal salt of the phenol compound and reacting the alkaline metal salt and carbon dioxide, wherein the dehydrating step is conducted by reacting the alkaline metal compound with an excess amount of the phenol compound at a temperature of 160° C. or above. According to the method of the present invention, the hydroxybenzoic acid compound can be obtained by simple steps with low cost without using an expensive aprotic polar organic solvent. The provided method can produce highly pure hydroxybenzoic acid compound comprising little by-products in high yield.
摘要:
A monoazo compound synthesized using 2-hydroxynaphthalene-3,6-dicarboxylic acid (or salt thereof), an amide, an ureide or an ester thereof as a coupler is novel, and is superior in water resistance, chemical resistance and solvent resistance. The present invention provides such a novel azo compound and a process for producing the same.
摘要:
The present invention provides novel condensed azo compounds using bisamide compounds of 2-hydroxynaphthalene-3,6-dicarboxylic acid, amide, or ester as the couplers, which have excellent properties such as excellent water resistance, chemical resistance, solvent resistance, and heat resistance.
摘要:
A novel compound represented by the general formula (1) or salts thereof. The compound is useful as a structural component of polymers such as polyesters and polyamides. The compound wherein Y1, Y2, Y3, and/or Y4 are carboxy groups is especially useful as a structural component of a liquid crystal polymer with improved weld strength and anisotropy.
摘要:
The present invention relates to a novel 2-hydroxy-naphthalene-3,6-dicarboxylic acid derivative. The compound is useful as a raw material for dyes, pigments, photosensitive materials and the like.