Abstract: Provided is an anthocyanin pigment composition having the following features: (A) an aqueous solution containing the composition and adjusted to pH of 3 with a citrate buffer (pH: 3.0) has a maximum absorption wavelength of 500 to 550 nm in the visible light region; (B) when a pigment-composition-containing aqueous solution containing the composition, 0.2 mass % citric acid, 20 mass % ethanol, and water is prepared so as to have a color value E10%1 cm of 10, 1 mL of the aqueous solution is sealed in a 20-mL vial, and the vial is stored at 50° C. for 5 days and further maintained at 40° C. for 30 minutes, the total amount of methyl mercaptan, dimethyl disulfide, and dimethyl trisulfide in the gas in the sealed space of the vial is 100 pg/mL or less; and (C) the gas in the sealed space of the vial contains 5-methylthiopentanenitrile when the vial is maintained at 40° C. for 30 minutes in (B) above.

Abstract: A sealing surface processing machine cuts an attachment surface of a seal member in a valve main body. The machine includes a pedestal attached to the valve main body; a main body movably supported on the pedestal; a tool holder configured to hold a tool for processing the attachment surface; a rotating part configured to rotate the tool holder around an axis parallel to a movement direction of a valve body; a first moving part configured to move the tool holder along a first direction along which the valve body moves; a second moving part configured to move the tool holder along a second direction intersecting with the movement direction of the valve body; a first adjustment device configured to adjust a position of the main body in the first direction; and a second adjustment device configured to adjust a position of the main body in the second direction.

Abstract: An object of the present invention is to provide a high-quality anthocyanin pigment composition more efficiently and at a lower cost than red cabbage pigment, which has not been achieved by the prior art. This invention provides the following anthocyanin pigment composition derived from a plant other than red cabbage, the composition having the following features (A), (B), and (C): (A) an aqueous solution containing the anthocyanin pigment composition and adjusted to a pH of 3 with a citrate buffer (pH: 3.0) has a maximum absorption wavelength in the range of 500 to 550 nm in the visible light region; (B) when a pigment-composition-containing aqueous solution containing the anthocyanin pigment composition, 0.2 mass % citric acid, 20 mass % ethanol, and water is prepared so as to have a color value E10%1cm of 10, 1 mL of the aqueous solution is sealed in a 20-mL vial, and the vial is stored at 50° C. for 5 days and further maintained at 40° C.

Abstract: A resing composition for bonded magnet of the present invention comprises: magnetic particles; and an aromatic polyamide resin comprising an aromatic carboxylic acid and an aliphatic diamine, which has a molar rational of residual end carboxyl groups to residual end amino groups of 0.1 to 1.0 and a solution viscosity of not more than 1.1 dl/g. The resin composition for bonded magnet is excellent inmoldability, and a bonded magnet using such a resing composition is excellent in mechanical strength and heat resistance.

Abstract: A resin composition for bonded magnet of the present invention comprises: