Tokyo Ohka Kogyo

Kawasaki, Japan

Tokyo Ohka Kogyo

Kawasaki, Japan
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Patent
Tokyo Ohka Kogyo | Date: 2017-02-22

Provided are: a photosensitive resin composition for cell culture substrates that enables the low-cost manufacture of a cell culture substrate, that can easily form patterns of various shapes when providing a pattern on the surface of a cell culture substrate, that has low cytotoxicity, and that can form a cell culture substrate with which cells can be cultured well; a cell culture substrate that is formed using the photosensitive resin composition; and a cell culture substrate manufacturing method that uses the photosensitive resin composition. In the photosensitive resin composition, which includes a photopolymerizable monomer (A) and a photopolymerization initiator (B), the photopolymerizable monomer (A) used contains a defined amount of a polyfunctional monomer (A1) that is at least trifunctional, and the content of the photopolymerization initiator (B) is within a prescribed range.


Patent
Tokyo Ohka Kogyo | Date: 2017-03-29

To provide a surface treatment liquid capable of successfully making a surface of a treatment target hydrophilic or hydrophobic even without including resin having a coating film formation property, and a surface treatment method using the surface treatment liquid. In a surface treatment liquid including (A) resin and a (C) solvent, resin having a functional group I that is at least one group selected from the group consisting of a hydroxyl group, a cyano group, and a carboxyl group, and a functional group II that is a hydrophilic group or a hydrophobic group other than the functional group I is used as the (A) resin, and (B) strong acid having a pKa of 1 or less is added to the surface treatment liquid.


First, there is provided a crystal growth control agent which is capable of suppressing an increase in a crystal size of a p-type semiconductor, and performing chemical modification on a surface of p-type semiconductor microparticle, a method for forming p-type semiconductor microparticles or a p-type semiconductor microparticle film by using the crystal growth control agent, a composition for forming a hole transport layer of a solar cell, and a solar cell using the composition for forming a hole transport layer. Second, there is provided a composition for forming a hole transport layer which is capable of prompting crystallization and fine pulverization of the p-type semiconductor and performing the chemical modification on the surface of the p-type semiconductor microparticle even in the case where an organic salt (an ionic liquid) containing an anion other than the thiocyanate ion is used, and a solar cell using the composition for forming a hole transport layer. According to the present invention, the crystal growth control agent contains at least one of sulfur-containing compounds (except for thiocyanate) selected from the group consisting of a compound, which generates a thiolate anion due to dissociation of a proton or a cation, and a disulfide compound, and controls crystal growth of a p-type semiconductor.


To provide a porous separator which has excellent handleability and provides a secondary battery with high electrical characteristics. A porous separator for secondary batteries according to the present invention is formed of a porous film, and is characterized by having a first layered region having an average pore diameter of from 100 nm to 500 nm (inclusive) and a second layered region having a larger average pore diameter than the first layered region. This porous separator for secondary batteries is also characterized in that the first layered region is positioned in one outermost surface of the porous film. Both the first layered region and the second layered region may be positioned as the outermost surface of the porous film.


Provided are: a transparent body production method that uses a novel vinyl group-containing compound; and a transparent body obtained by this production method. This transparent body production method includes subjecting a vinyl group-containing compound that is represented by formula (1) to heating at a temperature equal to or greater than the melting point of said compound. In formula (1), each of W^(1) and W^(2) is the group represented by formula (2) (in the formula, the ring Z is an aromatic hydrocarbon ring, X is a single bond or a group represented by -S-, R^(1) is a single bond or an alkylene group having 1-4 carbon atoms, R^(2) is a specific substituent such as a monovalent hydrocarbon group, and m is an integer of 0 or higher), the group represented by formula (4) (in the formula, the ring Z, X, R^(1), R^(2), and m are as indicated above), a hydroxyl group, or an (meth)acryloyloxy group, each of the ring Y^(1) and the ring Y^(2) is an aromatic hydrocarbon ring, R is a single bond or a specific divalent group, each of R^(3a) and R^(3b) is a cyano group, a halogen group, or a monovalent hydrocarbon group, and each of n1 and n2 is an integer of 0-4.


A homogeneous coating solution for forming a light-absorbing layer of a solar cell, the homogeneous solution including: at least one metal or metal compound selected from the group consisting of a group 11 metal, a group 13 metal, a group 11 metal compound and a group 13 metal compound; a Lewis base solvent; and a Lewis acid.


Patent
Tokyo Ohka Kogyo | Date: 2017-02-06

An adhesive composition for temporarily attaching a substrate to a support plate which supports the substrate, including a thermoplastic resin and a release agent.


This invention provides: a new imidazole compound that yields a surface treatment liquid that is very effective at suppressing migration and the oxidation of a wiring surface; a metal surface treatment liquid that contains the imidazole compound; a metal surface treatment method that uses the metal surface treatment liquid; and a laminate production method that uses the surface treatment liquid. Metal is surface-treated using the surface treatment liquid which includes a saturated fatty acid or a saturated fatty acid ester of a specific structure, in which a prescribed position is substituted by an aromatic group of a prescribed structure and an imidazolyl group that may have a substituent group.


Patent
Tokyo Ohka Kogyo | Date: 2017-05-10

The purpose of the present invention is to provide a photosensitive composition having excellent sensitivity, an insulating film formed using said photosensitive composition, a color filter formed using said photosensitive composition, a display device provided with said insulating film or said color filter, and a compound suitable for incorporation as a photopolymerization initiator into said photosensitive composition. This photosensitive composition includes (A) a photopolymerizable compound and (B) a photopolymerization initiator, wherein the photopolymerization initiator (B) contains a compound represented by formula (1). In formula (1), R^(1) is a hydrogen atom, a nitro group, or a monovalent organic group; R^(2) and R^(3) are each an optionally substituted linear alkyl group, an optionally substituted cyclic organic group, or a hydrogen atom, and R^(2) and R^(3) may be bonded to one another to form a ring; R^(4) is a monovalent organic group; R^(5) is a hydrogen atom, an optionally substituted C1-11 alkyl group, or an optionally substituted aryl group; n is an integer from 0 to 4; and m is 0 or 1.


A filtration filter used for filtering a liquid chemical for lithography, provided with a polyimide resin porous membrane; a filtration method including allowing a liquid chemical for lithography to pass through the filtration filter; and a production method of a purified liquid chemical product for lithography, including filtering a liquid chemical for lithography by the filtration method.

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