Toray Fine Chemicals Co.

Nagoya-shi, Japan

Toray Fine Chemicals Co.

Nagoya-shi, Japan

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Patent
Toray Fine Chemicals Co. | Date: 2015-09-07

A method produces a 2-trifluoromethyl-substituted aromatic ketone and includes reacting a 2-halogen-substituted benzotrifluoride compound with magnesium metal to convert the compound to a Grignard reagent; and reacting the Grignard reagent with an acid anhydride; and then hydrolyzing the resultant to produce a 2-trifluoromethyl-substituted aromatic ketone. The method of producing a 2-trifluoromethyl-substituted aromatic ketone enables 2-trifluoromethyl-substituted aromatic ketone to be produced without using expensive raw materials by generating a Grignard reagent as an intermediate and reacting this Grignard reagent with an acid anhydride in an efficient productivity. The 2-trifluoromethyl-substituted aromatic ketone that is produced by the method of producing a 2-trifluoromethyl-substituted aromatic ketone can be used as fine chemicals, raw materials for pharmaceuticals and agrochemicals, raw materials for resins and plastics, electronics and information related materials, optical materials, and the like.


Patent
Toray Fine Chemicals Co. | Date: 2017-03-29

Provided is a retractor for endoscopic surgery and the like, which can be placed in a vicinity of a target organ in a body cavity, while reducing burdens on a patient. The retractor is a surgical retractor including a liquid-absorbing and swelling material, wherein the liquid-absorbing and swelling material is formed in a roll shape, the roll-shaped liquid-absorbing and swelling material absorbs liquid in a body cavity to swell and expand into a planar shape.


Patent
Toray Fine Chemicals Co. | Date: 2017-06-14

The present invention provides a method for producing an optically active 2-methylpiperazine including: adding a solvent to a solution of the optically active 2-methylpiperazine to carry out solvent replacement, and then being crystallized to obtain crystals of the optically active 2-methylpiperazine. The method for producing an optically active 2-methylpiperazine according to the present invention allows the optically active 2-methylpiperazine to be purified during the crystallization process, and thus it is possible to obtain an optically active 2-methylpiperazine having a high quality.


Patent
Toray Fine Chemicals Co. | Date: 2017-07-26

The present invention is a method of producing a 2-trifluoromethyl-substituted aromatic ketone comprising reacting a 2-halogen-substituted benzotrifluoride compound with magnesium metal to convert the compound to a Grignard reagent; and reacting the Grignard reagent with an acid anhydride; and then hydrolyzing the resultant to produce a 2-trifluoromethyl-substituted aromatic ketone. The method of producing a 2-trifluoromethyl-substituted aromatic ketone of the present invention enables 2-trifluoromethyl-substituted aromatic ketone to be produced without using expensive raw materials by generating a Grignard reagent as an intermediate and reacting this Grignard reagent with an acid anhydride in an efficient productivity. The 2-trifluoromethyl-substituted aromatic ketone that is produced by the method of producing a 2-trifluoromethyl-substituted aromatic ketone of the present invention can be used as fine chemicals, raw materials for pharmaceuticals and agrochemicals, raw materials for resins and plastics, electronics and information related materials, optical materials, and the like.


Patent
Toray Fine Chemicals Co. | Date: 2017-04-24

A thiol group-containing polymer represented by: HS(RS_(r))_(n)RSH wherein R is an organic group including a OCH_(2)O bond and a branched alkylene group, n is an integer of from 1 to 200, r is an integer of from 1 to 5, an average value of r is 1.1 or more and lower than 1.8, and the thiol group-containing polymer is a liquid at room temperature and has a specific gravity at 23 C. of 1.20 to 1.27.


Patent
Toray Medical Co. and Toray Fine Chemicals Co. | Date: 2015-01-21

This heat and moisture exchanger (HME) is characterized by comprising: a heat and moisture exchanger material that is formed by coiling a strip-shaped porous body, said porous body having a plurality of slits formed therein that are arranged along the lengthwise direction, into a spirally-wound shape with the slits facing radially outward; and a housing that accommodates the heat and moisture exchanger material. The use of such a structure for an HME makes it possible to reduce pressure loss and improve moisture retention capabilities by means of a relatively simple structure, thereby allowing the inexpensive provision of an HME that lowers the burden on a patient. More specifically, little pressure loss occurs because the slits that are formed in the porous body work as flow paths for exhalation and inhalation, said porous body makes it possible to exhibit superior moisture retention capabilities and moisturizing capabilities, and it is thus possible to provide an HME exhibiting superior production characteristics.


Patent
Toray Fine Chemicals Co. | Date: 2016-01-27

The present invention is a method for producing optically active trans-1,2-diaminocyclohexane, in which a crystal of optically active trans-1,2-diaminocyclohexane is obtained by crystallization from a solution of optically active trans-1,2-diaminocyclohexane. According to the present invention, optically active trans-1, 2-diaminocyclohexane with high purity is obtained in a favorable yield from a solution of optically active trans-1,2-diaminocyclohexane. The optically active trans-1,2-diaminocyclohexane with high purity, which is produced by a method for producing optically active trans-1,2-diaminocyclohexane of the present invention, is useful as a raw material for a large number of medicines.


Patent
Toray Fine Chemicals Co. | Date: 2015-06-10

The thiol group-containing polymer of the present invention is represented by the following general formula: HS-(R-S_(r))_(n)-R-SH, wherein R is an organic group including a -O-CH_(2)-O- bond and/or a branched alkylene group, n is an integer of from 1 to 200, r is an integer of from 1 to 5, and the average value of r is 1.1 or more and 1.8 or less. A curable composition using the thiol group-containing polymer of the present invention can be used in sealants, adhesives, paints and the like, which require properties such as a low specific gravity, a low viscosity and a low glass transition temperature. Furthermore, since the curable composition of the present invention improves elastic recovery and weather resistance, it can be used in sealants, adhesives, paints and the like, which require elastic recovery and weather resistance.


A method of producing a thiol group-containing polymer includes reacting bis(2-chloroethyl) formal with sodium hydrosulfide, wherein the thiol group-containing polymer is represented by general formula: HS(RS_(r))_(n)RSH where R is an organic group including a C_(2)H_(4)OCH_(2)OC_(2)H_(4) structure, n is an integer of from 1 to 200, r is an integer of from 1 to 5, and the average value of r is 1.1 or more and lower than 1.8, and wherein the thiol group-containing polymer is a liquid polymer.


Patent
Toray Fine Chemicals Co. | Date: 2016-03-09

The present invention provides a method for purifying dimethyl sulfoxide economically and at good yield so as to satisfy the specifications of the United States Pharmacopoeia and reduce odor. The method is characterized in that a solution having 35 parts by weight or more of water admixed per 100 parts by weight of raw dimethyl sulfoxide is distilled.

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