Hodogaya Chemical Co.

Tsukuba, Japan

Hodogaya Chemical Co.

Tsukuba, Japan
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Patent
Hodogaya Chemical Co. | Date: 2017-05-17

The organic EL device of the present invention has an anode, a hole transport layer, a luminous layer, an electron transport layer, and a cathode in this order, and the hole transport layer contains an arylamine compound represented by the following general formula (1):Ar^(1) to Ar^(4) each represent a monovalent aromatic hydrocarbon group or a monovalent aromatic heterocyclic group.


Patent
Hodogaya Chemical Co. | Date: 2017-02-22

An organic electroluminescent device comprises, between an anode and a cathode, a hole injection layer, a hole-transporting layer, a luminous layer and an electron-transporting layer, wherein the hole injection layer contains an arylamine compound () having three or more triphenylamine skeletons, the hole-transporting layer contains an arylamine compound () having two triphenylamine skeletons, and the electron-transporting layer contains an electron-transporting compound having an anthracene ring skeleton and a pyridoindole ring skeleton. The organic EL device emits light highly efficiently, drives on a low voltage, and features excellent durability and long life.


An organic compound with characteristics excelling in hole-injecting/transporting performance and having an electron blocking ability, a highly stable thin-film state, and excellent heat resistance is provided as material for an organic electroluminescent device of high efficiency and high durability, and the organic electroluminescent device of high efficiency and high durability is provided using this compound. The compound of a general formula (Chemical Formula 1) has an acridan ring structure, wherein Ar_(1) is substituted or unsubstituted 9,9-dimethylfluorenyl and Ar_(2) is a substituted or unsubstituted condensed polycyclic aromatic group, and is used as a constituent material of at least one organic Layer in the organic electroluminescent device that includes a pair of electrodes and one or more organic layers sandwiched between the pair of electrodes.


Patent
Hodogaya Chemical Co. and SFC Co. | Date: 2017-06-28

The organic EL device of the invention has, in order, an anode, a hole transport layer, a luminous layer, an electron transport layer and a cathode. The hole transport layer includes an indenoacridan derivative represented by the following general formula (1), and the luminous layer includes an N-aromatic substituted indenoindole compound and/or an N-aromatic substituted carbazole compound. In the formula, A^(1) is a divalent aromatic hydrocarbon group, a divalent aromatic heterocyclic group or a single bond, B is a monovalent aromatic hydrocarbon group; a monovalent aromatic heterocyclic group; or a disubstituted amino group having, as a substituent, a monovalent aromatic hydrocarbon group or a monovalent aromatic heterocyclic group; and R^(1) to R^(14) each represent a hydrogen atom or an alkyl group.


Patent
Hodogaya Chemical Co. and SFC Co. | Date: 2017-06-07

According to the present invention, there is provided an organic electroluminescent device which has an anode, a hole transport layer, a luminous layer, an electron transport layer, and a cathode arranged in order of description. The device is characterized in that: the hole transport layer includes a specific arylamine compound, and that the luminous layer includes a specific indenoindole derivative or a specific carbazole derivative. The organic EL device of the present invention has improved efficiency of hole transport from the hole transport layer to the luminous layer and also improved efficiency of electron transport from the electron transport layer to the luminous layer, in comparison to conventional organic EL devices.


Patent
Hodogaya Chemical Co. | Date: 2017-05-03

[Object] An organic electroluminescent device having high efficiency, low driving voltage and a long lifetime is provided by combining various materials for an organic electroluminescent device, which are excellent, as materials for an organic electroluminescent device having high efficiency and high durability, in hole and electron injection/transport performances, electron blocking ability, stability in a thin-film state and durability, so as to allow the respective materials to effectively reveal their characteristics. [Means of Realizing the Object] In the organic electroluminescent device having at least an anode, a hole transport layer, a light emitting layer, an electron transport layer and a cathode in this order, the hole transport layer includes an arylamine compound of the following general formula (1), and the electron transport layer includes a compound the following general formula (2) having an anthracene ring structure.


Patent
Hodogaya Chemical Co. | Date: 2017-04-19

According to the present invention, there are provided a pyrimidine derivative represented by a general formula (1) indicated below, and an organic electroluminescent device comprising a pair of electrodes, and at least one organic layer sandwiched therebetween, wherein the pyrimidine derivative is used as a constituent material for the at least one organic layer. The pyrimidine derivative of the present invention is a material for a high efficiency, high durability organic electroluminescent device, is excellent in electron injection/transport performance, has hole blocking capability, and excels in characteristics.


Patent
Hodogaya Chemical Co. | Date: 2016-04-13

According to the present invention, there are provided an indenoindole derivative represented by the following general formula (1) ; and an organic electroluminescent element including a pair of electrodes and at least one organic layer sandwiched therebetween, wherein the above compound is used as a constituent material for the at least one organic layer. The indenoindole derivative of the present invention provides anorganic compound, which is excellent in hole injection/transport performance, has electron blocking capability, is highly stable in a thin film state, and excels in heat resistance, as a material for a high efficiency, high durability organic electroluminescent element. Anorganic electroluminescent element formed using this compound is highly efficient and highly durable.


The present invention relates to a colorant for hair dyeing containing a compound represented by the following general formula (I), a composition for hair dyeing containing the same, and a hair dyeing method:_(1), R_(2) and R_(3) each independently represent a hydrogen atom, a linear or branched alkyl group having from 1 to 6 carbon atoms, or a linear or branched alkoxy group having from 1 to 6 carbon atoms, and An- represents an inorganic anion or an organic anion).


Patent
Hodogaya Chemical Co. | Date: 2016-06-08

A Benzotriazole derivative represented by the following general formula (1),Ar^(1) is a monovalent aromatic hydrocarbon group or aromatic heterocyclic group,Ar^(2) is a hydrogen atom, a deuterium atom, or a monovalent aromatic hydrocarbon group or aromatic heterocyclic group,A is a divalent aromatic hydrocarbon group or aromatic heterocyclic group,B is a divalent condensed polycyclic aromatic hydrocarbon group or a single bond, andC is a monovalent aromatic heterocyclic group, and wherein if A is a phenylene group, B is a divalent condensed polycyclic aromatic hydrocarbon group or C is a monovalent aromatic heterocyclic group other than a pyridyl group.

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