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Patent
Nissan Chemical Industries Ltd. and Kyusyu Nanotec Optics Co. | Date: 2017-05-03

To provide a liquid crystal display device, in which favorable transparency when no voltage is applied and favorable scattering property when a voltage is applied are achieved, and the adhesion between the liquid crystal layer and the vertical liquid crystal alignment film is high. A liquid crystal display device, which comprises a liquid crystal layer formed by disposing a liquid crystal composition between a pair of substrates provided with an electrode and irradiating the liquid crystal composition with ultraviolet rays and curing it by an ultraviolet irradiation apparatus in such a state that the liquid crystal composition partly or entirely shows liquid crystallinity, and at least one of the substrates being provided with a liquid crystal alignment film to vertically align a liquid crystal, wherein the liquid crystal composition contains a liquid crystal, a curable resin, a bifunctional monomer and a monomer having at least one polar group selected from the group consisting of a hydroxy group, a carboxy group and a phosphoric acid group, and the liquid crystal alignment film is a liquid crystal alignment film obtained from a liquid crystal aligning agent containing a polymer having a specific side chain structure.


Patent
Nissan Chemical Industries Ltd. | Date: 2017-04-26

There are provided a novel method of producing a silane compound having a sulfonyl bond useful for a raw material for a resist underlayer film-forming composition for lithography. The method of producing the silane compound having a sulfonyl bond of Formula (1) comprising a step (A) of reacting a chlorosulfonyl compound of Formula (I) with sodium sulfite in water as a solvent in the presence of a base, to produce a sulfinic acid sodium salt of Formula (II): and a step (B) of adding an aromatic hydrocarbon solvent to this reaction system to carry out azeotropic dehydration, and adding an aprotic polar solvent and a chloroalkylsilane compound of Formula (III) to cause a reaction.^(1), R^(2), R^(3), R^(4), and R^(5) are each independently a substituent selected from the group consisting of a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, a haloalkyl group, a haloalkoxy group, a cyano group, and a nitro group, R^(2) and R^(1) or R^(3) may form -CH=CH-CH=CH- together, R^(6) and R^(7) are each independently a C_(1-5) alkyl group, L is a single bond or a saturated or unsaturated divalent C_(1-10) hydrocarbon group having a structure that is linear, branched, cyclic, or a combination thereof, and q is an integer of 1 to 3.)


To provide a liquid crystal display device, in which the vertical alignment property of the liquid crystal is high, favorable transparency when no voltage is applied and favorable scattering property when a voltage is applied are achieved, and the adhesion between the liquid crystal layer and the vertical liquid crystal alignment film is high. A liquid crystal display device, which comprises a liquid crystal layer formed by disposing a liquid crystal composition containing a polymerizable compound which undergoes a polymerization reaction by ultraviolet rays, between a pair of substrates provided with an electrode, and irradiating the liquid crystal composition with ultraviolet rays and curing it in such a state that the liquid crystal composition partly or entirely shows liquid crystallinity, and at least one of the substrates being provided with a liquid crystal alignment film to vertically align a liquid crystal, wherein the liquid crystal alignment film is a liquid crystal alignment film obtained from a liquid crystal aligning agent containing a polymer having a first side chain structure and a second side chain structure.


Patent
Nissan Chemical Industries Ltd. | Date: 2017-05-17

A charge-transporting varnish according to the present invention includes a charge-transporting substance, a dopant substance, and an organic solvent, wherein the charge-transporting substance contains at least one selected from N,N-di(l-naphthyl)benzidine, N,N-di(2-naphthyl)benzidine, and N-(1-naphthyl)-N-(2-naphthyl)benzidine. The charge-transporting varnish allows formation of a charge-transporting thin film with which an organic EL element excellent in durability can be achieved when the charge-transporting thin film is applied to a hole injection layer.


Patent
Nissan Chemical Industries Ltd. | Date: 2017-05-17

There is provided a method for producing an active silicic acid solution in which the existing amount of foreign matters as plate-like fine particles is reduced and a method for producing a silica sol in which such foreign matters are reduced. A method for producing an active silicic acid solution fulfilling the following condition: (1) the existing amount of plate-like fine particles having a length of one side of 0.2 to 4.0 m and a thickness of 1 to 100 nm is measured to be 0% to 30% in accordance with measuring method A, the method characterized by including the steps of: preparing an active silicic acid solution by subjecting an alkali silicate aqueous solution having a silica concentration of 0.5% by mass to 10.0% by mass to cation-exchange to remove alkaline components; and filtering the active silicic acid solution through a filter whose removal rate of particles having a primary particle size of 1.0 m is 50% or more, and whose filtering rate is 13 L/min to 400 L/min per 1 m^(2) of the filtration area of the used filter.


Patent
Nissan Chemical Industries Ltd. | Date: 2017-05-17

Provided are a fluorine-atom-containing polymer that is a condensation polymer of a fluorine-atom-containing triphenylamine derivative giving a repeating unit represented by formula (1) and a fluorene derivative giving a repeating unit represented by formula (2) and the use of this fluorine-atom-containing polymer.^(1) and R^(2) represents any of an alkoxyl group, an alkenyloxy group, an alkynyloxy group, an aryloxy group, a heteroaryloxy group, and an alkyl group including at least one ether structure, R^(3)-R^(6) represent prescribed substituents, m^(1) and m^(2) each independently represent an integer of 0-4, n^(1) and n^(2) represent an integer of 0-3.)


The invention provides a charge-transporting varnish, containing a charge-transporting substance formed of an indolocarbazole represented by the following formula (1), a dopant substance, and an organic solvent.


Provided is a composition for forming a metal oxide semiconductor that includes a solvent represented by general formula [1] and an inorganic metal salt. (In the formula, R1 represents a linear or branched C2-3 alkylene group, and R2 represents a linear or branched C1-3 alkyl group.)


Patent
Nissan Chemical Industries Ltd. | Date: 2017-05-31

This charge-transporting material, which includes a charge-transporting substance, halo-tetracyanoquinodimethane, and a complexing agent comprising an amide compound such as 1,3-dimethyl-2-imidazolidinone, for example, and capable of forming a complex with halo-tetracyanoquinodimethane, and in which the halo-tetracyanoquinodimethane and complexing agent form a complex, makes it possible to provide a thin film having excellent charge-transporting properties and to realize an organic EL element having low drive voltage when said thin film is applied to a hole injection layer.


Patent
Nissan Chemical Industries Ltd. | Date: 2017-05-31

A charge transport material containing a charge transport substance that is composed of a compound represented by formula (1) and another charge transport substance that is composed of a charge transport compound having a molecular weight of 200-9,000 exhibits good solubility in an organic solvent. A charge transport varnish, from which a charge transport thin film having excellent charge transport properties, flatness and uniformity is formed with good reproducibility, is able to be prepared by dissolving the above-described charge transport material in an organic solvent.

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