Sumitomo Chemical

Tokyo, Japan

Sumitomo Chemical

Tokyo, Japan

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Patent
Sumitomo Chemical | Date: 2017-01-27

Provided is a nitride semiconductor wafer in which, above a nitride semiconductor template having a nitride semiconductor layer as a top layer thereof, a light emitting layer having a multiple quantum well structure that is formed by a regrown nitride semiconductor and a p-type nitride semiconductor layer are stacked. Here, when the light emitting layer having a multiple quantum well structure includes a plurality of well layers and one of the well layers that is the closest to the p-type nitride semiconductor layer is referred to as a top well layer, a distance t from a regrowth interface of the nitride semiconductor layer of the nitride semiconductor template to the top well layer is 1 m or less, and the top well layer has an oxygen concentration of 5.010^(16 )cm^(3 )or less.


Patent
Sumitomo Chemical | Date: 2017-01-31

A nitride semiconductor template includes a substrate, an AlN layer that is formed on the substrate and that includes Cl, and a nitride semiconductor layer formed on the AlN layer. In the AlN layer, a concentration of the Cl in a region on a side of the substrate is higher than that in a region on a side of the nitride semiconductor layer. Also, a light-emitting element includes the nitride semiconductor template, and a light-emitting layer formed on the nitride semiconductor template.


Patent
Sumitomo Chemical | Date: 2017-01-27

A nonaqueous secondary battery separator, disposed between a cathode and an anode, includes: a porous base material containing a polyolefin as a main component; and a porous layer containing a polyvinylidene fluoride-based resin on at least one surface of the porous base material. The separator satisfies (C)/(D)0.13, where (C) represents the average pore diameter (m) of the porous base material, and (D) represents the porosity of the porous base material, in the porous layer after being immersed for 24 hours in an electrolyte solution having a temperature of 25 C. in which electrolyte solution LiPF_(6 )having a concentration of 1.0 mole per liter is dissolved in a mixed solvent containing ethyl methyl carbonate, diethyl carbonate, and ethylene carbonate at a volume ratio of 50:20:30, the resin having absorbed the electrolyte solution having a volume of 0.05 to 5.00 cm^(3 )per square meter of the porous layer.


Patent
Sumitomo Chemical | Date: 2017-05-17

A polynucleotide encoding an amino acid sequence represented by SEQ ID NO: 1, 3, or 5; a protein having an amino acid sequence represented by SEQ ID NO: 1, 3, or 5; a method for producing an -oxocarboxylic acid compound, which comprises the step of reacting a protein of the present invention with an -hydroxycarboxylic acid compound; and a method for producing an L--amino acid compound, which comprises the step (1) of reacting the present invented protein with an -hydroxycarboxylic acid compound to obtain a corresponding -oxocarboxylic acid compound, and the step of reacting a protein having the ability to aminate an -oxocarboxylic acid compound and convert the same into a corresponding L--amino acid compound with the -oxocarboxylic acid compound obtained in the step (1) to obtain a corresponding L--amino acid compound; and the like.


Patent
Sumitomo Chemical | Date: 2017-05-17

Provided is a metal complex excellent in light emission stability. A metal complex represented by the formula (1):_(1) represents an integer of 1 to 3, n_(2) represents an integer of 0 to 2, E^(2) to E^(4) represent a nitrogen atom or a carbon atom, two selected from among E^(2) to E^(4) are nitrogen atoms, the remaining one is a carbon atom, R^(1) represents an aryl group or the like, R^(2) and R^(3) represent a hydrogen atom, an alkyl group, an aryl group or the like, the ring B represents a triazole ring, the ring A represents an aromatic hydrocarbon ring or the like, and A^(1)-G^(1)-A^(2) represents an anionic bidentate ligand.


Patent
Sumitomo Chemical | Date: 2017-05-17

A polynucleotide encoding an amino acid sequence represented by SEQ ID NO: 1 or 3; a protein having an amino acid sequence represented by SEQ ID NO: 1 or 3; and; a method for producing an L--amino acid compound, which comprises the step (1) for reacting the present invented protein with an -hydroxycarboxylic acid compound to obtain a corresponding -oxocarboxylic acid compound, and the step of reacting a protein having the ability to aminate an -oxocarboxylic acid compound and convert the same into a corresponding L--amino acid compound with the -oxocarboxylic acid compound obtained in the step (1) to obtain a corresponding L--amino acid compound; and the like.


The present invention provides, as a nonaqueous electrolyte secondary battery separator having excellent heat resistance and excellent ion permeability, a nonaqueous electrolyte secondary battery separator which includes a porous layer including: a nitrogen-containing aromatic polymer A; and an aromatic polymer B differing in structural unit from the nitrogen-containing aromatic polymer A.


Patent
Cambridge Display Technology and Sumitomo Chemical | Date: 2017-02-08

Methods of metal-catalysed polymerisation are described using a metal catalyst of formula (III): wherein R^(3 )in each occurrence is independently selected from C_(1-10 )alkyl and aryl that may be unsubstituted or substituted with one or more substituents; y is 0 or 2; and Z^()is an anion. Methods described include Buchwald-type and Suzuki-type polymerisation.


Patent
Sumitomo Chemical | Date: 2017-05-24

Provided is a method of producing a light emitting device excellent in light emission efficiency. A method of producing a light emitting device comprising an anode, a cathode, a light emitting layer disposed between the anode and the cathode, and an encapsulating layer, comprising a step of forming the light emitting layer by an application method using an iridium complex having an iridium atom as the central metal or the like, a step of forming the anode or the cathode, and a step of forming the encapsulating layer, wherein for the whole process from initiation of the step of forming the light emitting layer to completion of the step of forming the encapsulating layer during which the light emitting device in production is exposed to ozone, the average value of the ozone concentration: A ppb and the time interval: B min satisfy the formula (1-1):


Patent
Sumitomo Chemical | Date: 2017-05-03

A compound represented by formula (4) is produced by a step A of reacting a compound represented by formula (2): wherein R1 represents an ethyl group or the like, R represents a halogen atom or the like, n represents 0, 1, 2, or 3, and M represents potassium or the like, with thionyl chloride to obtain a compound represented by formula (1): a step B of reacting the compound represented by formula (1) with a compound represented by formula (5): wherein A1 represents a nitrogen atom or =CH-, R5 represents a trifluoromethyl group or the like, and m represents 1 or 2, to produce a compound represented by formula (3): or an acid salt thereof; and a step C of reacting the compound represented by formula (3) or an acid salt thereof in the presence of an acid at 100?C to 180?C to obtain the compound represented by formula (4):.

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