Mitsubishi Gas Chemical Company Patente

In the cyanate ester compound having two or more cyanate groups in a molecule according to the present invention, a content of a compound having a triazine ring is 4.0% by area or less on HPLC area percentage.

The present invention relates to: an etching liquid that makes it possible to form a favorable etched surface while controlling how much of the surface of a copper-containing metal layer is etched; and a production method for a semiconductor device that uses the etching liquid. This etching liquid is for etching the surface of a copper-containing metal layer and is characterized by including, relative to the total amount of the etching liquid, (A) more than 0.1 but no more than 0.5 mass% of hydrogen peroxide, (B) 0.01 to 20 mass% of an organic acid that has a lowest acid dissociation constant pKa of at least 2.0, (C) 0.010 to 0.3 mass% of a nitrogen-containing heteromonocyclic compound, and (D) water, the inorganic acid content being less than 0.1 mass%.

The cyanate ester compound of the present invention is a cyanate ester compound having two or more cyanate groups in a molecule, wherein a content of a compound having one carbamate group is 0.5% by area or less on HPLC area percentage.

Provided are a multilayer body including a polyolefin resin layer containing a xylylenediamine-based polyamide resin and a barrier layer; a packaging material; and a method for producing a packaging material. A multilayer body includes: a polyolefin resin layer (A) containing an acid-unmodified polyolefin resin as a main component; and a barrier layer (B) containing a barrier resin as a main component. The polyolefin resin layer (A) contains from 0.1 to 8 mass% of a xylylenediamine-based polyamide resin and from 0.1 to 15 mass% of an acid-modified polyolefin resin. The xylylenediamine-based polyamide resin is a polyamide resin containing a diamine-derived structural unit and a dicarboxylic acid-derived structural unit, 70 mol% or more of the diamine-derived structural unit being derived from a xylylenediamine, and 70 mol% or more of the dicarboxylic acid-derived structural unit being derived from an α,ω-linear aliphatic dicarboxylic acid having from 4 to 20 carbon atoms.

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Provided is a method for producing a recycled resin, which is excellent in terms of efficiency in recycling molding waste products.A method for producing a recycled resin,the method comprising:a step of irradiating a laser light to a molding waste product consisting of a thermoplastic resin, identifying the type of the thermoplastic resin of the molding waste product based on a Raman scattering light scattered from the molding waste product, and separating and recovering the molding waste product; anda step of obtaining a recycled resin from the separated and recovered molding waste product, whereinthe thermoplastic resin comprises at least one selected from a constituent unit (A) derived from a monomer represented by the following general formula (1), a constituent unit (B) derived from a monomer represented by the following general formula (2), a constituent unit (C) derived from a monomer represented by the following general formula (3), a constituent unit (D) derived from a monomer represented by the following general formula (4), and a constituent unit (E) derived from a monomer represented by the following general formula (5):

According to the present invention, there can be provided a thermoforming laminate, comprising a base material layer and a hard coat layer, wherein the base material layer is formed by laminating a layer containing a polycarbonate resin and a layer containing a high-hardness resin, the hard coat layer is laminated on the layer containing a high-hardness resin in the base material layer, and the hard coat layer comprises a urethane (meth)acrylate resin and a hindered amine-based light stabilizer, and the content of the hindered amine-based light stabilizer is 0.1 to 4.0 parts by mass with respect to 100 parts by mass of the urethane (meth)acrylate resin.

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An air-permeable packaging material for an oxygen scavenger includes, in this order, an outer layer containing a thermoplastic resin, an intermediate layer containing one or more selected from paper and nonwoven fabric, and an inner layer containing a linear low-density polyethylene, the inner layer includes a through-hole H1, the through-hole H1 having an opening diameter φ1 of 150 µm or more and 3000 µm or less, and when differential scanning calorimetry is performed using the inner layer as a measurement sample in a nitrogen atmosphere under conditions of heating from 50°C to 200°C at 10°C per minute (heating 1), then cooling from 200°C to 50°C at 10°C per minute (cooling 1), and heating again from 50°C to 200°C at 10°C per minute (heating 2), a maximum endothermic peak is observed at 120°C or more in a process of (heating 2).

According to the present invention, there can be provided a polyester resin composition comprising a polyester resin (A) and a dye (B), wherein the polyester resin (A) has a dicarboxylic acid constituent unit and a diol constituent unit, the dicarboxylic acid constituent unit is a terephthalic acid unit and/or a 2,6-naphthalenedicarboxylic acid unit, 5% to 90% by mole of the diol constituent unit is a unit represented by the following general formula (1) or general formula (2), and 5% to 90% by mole of the diol constituent unit is a unit derived from an alicyclic diol, and the dye (B) is a combination of two or more types of dyes each having a structure containing at least two secondary amino groups and at least one benzene ring:

A method for producing an aromatic nitrile compound is provided by which the aromatic nitrile compound can be selectively obtained in high yield in a shortened reaction time using an aromatic amide compound and which can inhibit the formation of by-products. The above-mentioned problem was solved by the following method for producing an aromatic nitrile compound. The method for producing an aromatic nitrile compound includes a dehydration reaction in which an aromatic amide compound is dehydrated. The dehydration reaction includes a contact step in which the aromatic amide compound and a diluent are brought into contact with a catalyst in a gas phase. In the contact step, the temperature at which the aromatic amide compound and the diluent are brought into contact with the catalyst is 300°C or higher.

The present invention addresses the problem of efficiently recycling waste resin compositions such as synthetic resins, enabling the reuse of a wider variety of resins than before. The problem is solved by a method for producing a dicarboxylic acid compound, said method including a crystallization step for crystallizing at least the dicarboxylic acid compound from a mixed liquid containing a dicarboxylic acid compound represented by general formula (1-1) or general formula (1-2) and a dihydroxy compound represented by general formula (2-1) or general formula (2-2). The substituents and the like in the general formulas are as described in the description of the present application.

The present invention provides a method that makes it possible to selectively obtain a desired compound with high yield while shortening reaction time in regeneration of a nitrile compound by dehydration of an amide compound, and that also suppresses the generation of by-products. This problem is solved by a furonitrile compound production method comprising a dehydration reaction for dehydration of a furamide compound, wherein the dehydration reaction has a contact step for bringing a diluent and the furamide compound in a gaseous phase into contact with a catalyst. (In formula (1), R₁ and n are as defined in the description.)

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Provided is a fragrance composition containing the following 3-(4-alkylphenyl)propanenitrile represented by General Formula (1) as an active ingredient. The fragrance composition contains 3-(4-alkylphenyl)propanenitrile having a floral scent, and a green scent or a fruity scent, as an active ingredient and has a strong floral scent. Further, use of 3-(4-alkylphenyl)propanenitrile as a fragrance, a scenting method, and a method for producing 3-(4-alkylphenyl)propanenitrile are provided. In Formula (1), R represents an alkyl group having from 2 to 4 carbon atoms.

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