Daicel Corporation

Himeji, Japan

Daicel Corporation

Himeji, Japan
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Patent
Daicel Corporation and Yamaguchi University | Date: 2017-05-17

Provided is a compound that thickens and/or gelatinizes a fluid organic substance to a desired viscosity, or uniformly stabilizes a composition containing the fluid organic substance. Also provided are: a thickening/stabilizing agent including the compound, a thickened/stabilized composition including the thickening/stabilizing agent and a fluid organic substance, and a method for producing the composition. The compound according to the present invention is represented by Formula (1):(R^(2)-HNOC)_(4-n)-R^(1)-(CONH-R^(3))_(n)(1)where R^(1) is a group resulting from removing four hydrogen atoms from the structural formula of an aromatic hydrocarbon or cyclohexane; R^(2) is, independently in each occurrence, an aliphatic hydrocarbon group containing 1 to 4 carbon atoms; R^(3) is, independently in each occurrence, an aliphatic hydrocarbon group containing 6 or more carbon atoms; and n is an integer of 1 to 3.


Patent
Daicel Corporation | Date: 2017-02-22

The present invention provides a perforator for breaking a closing member at a gas outlet of a gas bottle to allow a gas to flow out, includingthe cylindrical housing havingthree openings, namely, a first opening at a first end portion, a second opening at a second end portion which is opposite to the first end portion, and a third opening formed in a circumferential wall portion,an ignition device being fixed at the first opening, the second opening to be connected to the gas bottle and the third opening serving as a gas discharge portion,an first piston and a second piston being disposed, in the order of the first piston and the second piston, from the side of the ignition device to the side of the second opening in the cylindrical housing, andwhen a pressure created by actuation of the ignition device is received, the first piston moving in an axial direction inside the cylindrical housing, and the second piston moving towards the second opening inside the cylindrical housing by receiving the movement of the first piston.


A flange fastening skill determination apparatus includes: a receiver configured to receive output signals that are outputted from respective tightening force detectors when a testee performs work of tightening a plurality of bolts that are tightened for connecting flanges together, the tightening force detectors being individually provided corresponding to the plurality of respective bolts; a measurer configured to obtain a plurality of measurement results, the measurement results indicating transition of change in each of the output signals received by the receiver from a start to an end of the work of tightening a corresponding one of the plurality of bolts; a calculator configured to obtain a first calculation result, a second calculation result, and a third calculation result, each as a skill determining item, by performing calculation on the plurality of measurement results, the first calculation result indicating variation among output signal values of the respective tightening force detectors during the work of tightening the plurality of bolts, the second calculation result indicating variation among output signal values of the respective tightening force detectors at a time of completion of the work of tightening the plurality of bolts, the third calculation result indicating a degree of tightening force of each of the plurality of bolts at the time of completion of the work of tightening the plurality of bolts; a determiner configured to determine, based on results of comparing the skill determining items with determination criteria, to which one of three or more skill levels a skill of the testee in the work of tightening the bolts corresponds; and an output device configured to output a result of the determination performed by the determiner.


Patent
Daicel Corporation | Date: 2017-03-29

Provided is a film, sheet, plate, or other such formed article having excellent transparency made of a copolymer obtained from a cyclic olefin monomer and an -olefin monomer. The present invention provides a formed article made from a copolymer having Tg of 170 C or higher and an Al content of 50 ppm or less that is a copolymer including a structural unit of a cyclic olefin monomer (A) derived from norbornene and a structural unit of a monomer (B) derived from at least one C4-C12 -olefin.


Patent
Daicel Corporation | Date: 2017-02-15

A nutrient composition, a lipid metabolism-improving agent, and prophylactic and/or therapeutic agents typically for inflammatory bowel diseases, immune disorders, cancers, non-alcoholic steatohepatitis, obesity, diabetes, and hypercholesterolemia each contain a cellulose acetate having a total degree of acetyl substitution of 0.4 to 1.1. The cellulose acetate may be one having a compositional distribution index (CDI) of 2.0 or less, where the CDI is defined by the formula:


Patent
Daicel Corporation and Yamaguchi University | Date: 2017-03-22

The present invention provides a compound that thickens or gels a fluid organic substance to a desired viscosity or homogeneously stabilizes a composition containing a fluid organic substance, a thickening/stabilizing agent containing the compound, a thickened/stabilized composition containing the thickening/stabilizing agent and a fluid organic substance, and a method for producing a thickened/stabilized composition. The compound of the present invention is represented by the following formula (1). In the formula, R^(1) and R^(2) are different from each other and represent an aliphatic hydrocarbon group having not less than 4 carbon atoms, and n represents an integer of 1 to 3. The thickening/stabilizing agent of the present invention contains the compound.


Patent
Daicel Corporation | Date: 2017-09-20

A method produces acetic acid and includes a reaction step, a first purification step, a second purification step, and a third purification step. In the reaction step, a material mixture including methanol, carbon monoxide, a catalyst, and an iodide is subjected to a methanol carbonylation reaction in a reactor (1) to form acetic acid. In the first purification step, a crude acetic acid stream including acetic acid formed in the reaction step is subjected to distillation in a distillation column (3) to give a first acetic acid stream enriched with acetic acid. In the second purification step, the first acetic acid stream is subjected to distillation in a distillation column (5) to give a second acetic acid stream further enriched with acetic acid. In the third purification step, an acetic acid stream is subjected to purification in an additional purification unit (e.g., a distillation column (6)) while controlling the corrosive iodine concentration in the acetic acid stream passing through the unit to 100 ppm or less, to give a third acetic acid stream still further enriched with acetic acid. The method for producing acetic acid is suitable for restraining corrosion of the acetic acid production equipment.


A suspension of nanodiamond aggregates according to the present invention is a suspension of detonation nanodiamond aggregates. The suspension has such a pH and an electric conductivity as to meet one of conditions (1) and (2) as follows. (1) The suspension has a pH of 4 to 7 and an electric conductivity of 50 S/cm or less per weight percent of the solids concentration of the suspension; and (2) the suspension has a pH of 8 to 10.5 and has an electric conductivity of 300 S/cm or less per weight percent of the solids concentration of the suspension.


A nanodiamond according to the present invention has acidic functional groups, contains the acidic functional groups in a number density of 1 or more per square nanometer in the nanodiamond surface, and has a specific surface area of 150 m^(2)/g or more. Particles of the nanodiamond preferably have a D50 (median diameter) of 9 nm or less. The nanodiamond is preferably derived from a nanodiamond synthesized by a detonation technique (in particular, an air-cooling detonation technique).


Patent
Daicel Corporation and Yamaguchi University | Date: 2017-09-27

Provided are: a compound, a thickening/stabilizing agent including the compound, a thickened/stabilized composition including the thickening/stabilizing agent and a fluid organic substance, and a method for producing the thickened/stabilized composition, where the compound effectively thickens the fluid organic substance to a desired viscosity and effectively uniformly stabilizes the formulation of the composition containing the fluid organic substance via thickening of the fluid organic substance. The thickening/stabilizing agent according to the present invention includes a compound represented by Formula (1):(R^(2)-HNOC)_(4-n)-R^(1)-(CONH-R^(3))_(n)(1)where R^(1) is a group resulting from removing four hydrogen atoms from the structural formula of butane; R^(2) and R^(3) are different from each other and are aliphatic hydrocarbon groups each containing 4 or more carbon atoms; and n is an integer of 1 to 3.

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