Abstract: A hydrophilic polymer derivative having a cyclic benzylidene acetal linker represented by the following formula (1): wherein R1 and R6 are each independently a hydrogen atom or a hydrocarbon group; R2, R3, R4 and R5 are each independently an electron-withdrawing or electron-donating substituent or a hydrogen atom; X1 is a chemically reactive functional group; P is a hydrophilic polymer, s is 1 or 2, t is 0 or 1, and s+t is 1 or 2; w is an integer of 1 to 8; and Z1 and Z2 are each independently a selected divalent spacer.

Abstract: Provided is a cosmetic composition which has a structure-recovering property, is transparent, is satisfactory in smoothness when applied to the skin or hair, and has a good feeling in use, which comprises components (A) to (D) as described.

Abstract: A method includes:generating a peroxide radical on a dielectric substrate surface by treating the dielectric substrate surface with atmospheric pressure plasma using a rare gas; fixing a functional group forming a coordinate bond with a silver ion, by reacting a grafting agent; and applying a silver-containing composition to the substrate surface, followed by heating and curing the silver-containing composition, to thereby form a silver thin film layer, the silver-containing composition containing a silver compound (A) represented by Formula (1) and an amine compound (B) represented by Formula (2), the silver compound (A) being contained in an amount of 10 to 50% by mass, the amine compound (B) being contained in an amount of 50 to 90% by mass, relative to a total amount of 100% by mass of the silver compound (A) and the amine compound (B).

Abstract: Provided are silver nanoparticles having excellent dispersion stability and capable of forming on a substrate a silver element, such as a silver film or line, having excellent electrical conductivity and adhesivity through heating. A method for producing the silver nanoparticles, its dispersion liquid, and a substrate having a silver element formed thereon using the dispersion liquid are disclosed. The silver nanoparticles contain silver compound (A) of formula (1): amine compound (B) having a primary amino group; and polymer (C) obtained by polymerization of a monomer composition containing diol (meth)acrylate compound (c1) having a urethane bond of formula (2): (R1: hydrogen atom or methyl group; R2: —(CH2)n-; n: 1 to 4), and at least one monomer (c2) selected from (meth)acrylate monomers, acrylamide monomers, vinyl monomers, vinyl ether monomers, or monomers having an epoxy group.

Abstract: A multi-arm polyethylene glycol derivative having a narrow molecular weight distribution represented by the formula (1): wherein, L represents a group selected from a linear or branched alkylene, arylene, or cycloalkylene group having two or more carbon atoms and combinations thereof, which may have an ether bond in a chain; X represents a dehydroxylation residue of a linear sugar alcohol having 5 or 7 carbon atoms; m is the number of polyethylene glycol chains bonded to X and represents 4 or 6; n is the average addition molar number of oxyethylene groups and represents an integer of 3 to 600; Y represents a single bond or an alkylene group as further defined herein; and Z represents a chemically reactive functional group.

Abstract: A method for purifying a polyethylene glycol compound having one amino group, which includes (A) preparing an aqueous solution of the compound having a pH of 1 to 5, (B) an extracting step of mixing the aqueous solution with a mixed organic solvent to cause layer separation into organic and aqueous layers, wherein a ratio of an organic solvent I is 25 to 65% by mass and a ratio of an organic solvent II is 75 to 35% by mass, the organic solvent I is selected from an aromatic hydrocarbon and an ester, the organic solvent II is a halogenated hydrocarbon, and a mixing ratio Y of I to II, temperature T (° C.) at mixing, and molecular weight M of the compound satisfy the following relationship: 1.9×10?6M+0.09?Y?0.015T??1.4×10?6M+0.44 and (C) recovering the compound from the aqueous layer.

Abstract: A method of producing a medical polyoxypropylene polymer and a polyoxypropylene/polyoxyethylene block copolymer including (A) adding to a polyoxypropylene polymer which is obtained by ring-opening polymerization of propylene oxide to a starting substance having an active hydrogen reacting with the propylene oxide and contains allyl ether as an impurity, a tertiary alkoxide of alkali metal in an excess amount based on a molar number of the active hydrogen of the starting substance and heat treating at 115° C. or less to isomerize the allyl ether to propenyl ether; and (B) adding a mineral acid to the product obtained in step (A) to adjust pH to 4 or less and treating at 70° C. or less to hydrolyze the propenyl ether. Also disclosed is a method of producing a medical polyoxypropylene/polyoxyethylene block copolymer which includes performing ring-opening polymerization of ethylene oxide to the polyoxypropylene polymer obtained above.

Abstract: Provided is a multi-arm polyethylene glycol derivative having a narrow molecular weight distribution. A multi-arm polyethylene glycol derivative represented by the formula (1): m[Z—YnCH2CH2OX—O-L-O—XOCH2CH2nY—Z]m??(1) wherein, L represents a group selected from a linear or branched alkylene, arylene, or cycloalkylene group having two or more carbon atoms and combinations thereof, which may have an ether bond in a chain; X represents a dehydroxylation residue of a linear sugar alcohol having 5 or 7 carbon atoms; m is the number of polyethylene glycol chains bonded to X and represents 4 or 6; n is the average addition molar number of oxyethylene groups and n represents an integer of 3 to 600; Y represents a single bond or an alkylene group which may have an ester bond, a urethane bond, an amide bond, an ether bond, a carbonate bond, a secondary amino group, a urea bond, a thioether bond or a thioester bond in a chain or at an end; and Z represents a chemically reactive functional group.

Abstract: Provided is an anti-adhesive agent for asphalt mixtures which does not readily separate at ordinary or low temperatures, even after dilution with water. The anti-adhesive agent comprising: a water-soluble monohydric alcohol (A) that has a boiling point greater than or equal to 150° C. and is liquid at 25° C.; a compound (B) that is represented by Formula (1); and liquid paraffin (C) that has a kinematic viscosity of 1 to 40 mm2/s at 40° C., wherein the mass ratios of (A), (B) and (C) are (A) 15 to 35 mass %, (B) 53 to 79 mass % and (C) 6 to 12 mass %. R1O-(EO)n—H . . . (1) (In the formula, R1 is a hydrocarbon group having a branched alkyl group and having 8 to 12 carbon atoms, EO is an oxyethylene group, and n is the average number of moles of oxyethylene groups added, which is 4 to 10.

Abstract: Provided is an ophthalmic solution of which preservative component, hexamethylene biguanide, contained therein is inhibited from being adsorbed on soft contact lenses and eye droppers. The ophthalmic solution contains, at a specific ratio, (A) hydroxypropyl methylcellulose having 28.0 to 30.0 mass % methoxy groups and 7.0 to 12.0 mass % hydroxypropoxy groups, both with respect to the total amount of the hydroxypropyl methylcellulose, at a methoxy group/hydroxypropoxy group ratio of 2.5 to 4.0 by mass, wherein a 2 mass % aqueous solution of the hydroxypropyl methylcellulose at 20° C. has a viscosity of 50 to 4000 mPa·s; (B) sodium chloride or potassium chloride; (C) hexamethylene biguanide or a salt thereof; (D) 2-methacryloyloxyethyl phosphorylcholine/butyl methacrylate copolymer; and (E) water.

Abstract: In production of a cationic lipid having at least one methylene group sandwiched between adjacent two cis form double bonds in the molecule, isomerization from a cis form to a trans form is suppressed. A compound represented by the following formula (I): R1—X??(I) (in Formula, R1 represents a hydrocarbon group having at least one methylene group sandwiched between adjacent two cis form double bonds in the molecule and having the carbon number of 8 to 24 and X represents a releasing group) is reacted with (B) a compound having at least one of each of tertiary amino group and hydroxyl group in the molecule in a saturated hydrocarbon solvent having the carbon number of 5 to 10 in the presence of an alkali catalyst.

Abstract: There are provided a metal soap which is useful as a food additive to be added to various foods for the purposes of improving a fluidity, an anti-bridging property, a low moisture absorption property and feel upon eating of foods, and has a less adverse influence on the foods, as well as a process for producing the metal soap. The metal soap for a food additive is constituted of a fatty acid calcium salt or a fatty acid magnesium salt having 6 to 24 carbon atoms which is obtained by a double decomposition method, and a water dispersion containing the metal soap in an amount of 2% by mass exhibits a pH of not less than 6 but less than 7. The process for producing the metal soap for a food additive includes the steps of reacting 1 mol of a fatty acid having 6 to 24 carbon atoms with not less than 0.9 mol but less than 1 mol of a monovalent basic compound to obtain a fatty acid basic compound salt; and reacting the fatty acid basic compound salt with a calcium salt or a magnesium salt in an aqueous medium.

Abstract: Provided are a contact lens care preparation capable of imparting durable surface lubricity and amebic adhesion inhibitory effect to a contact lens surface through a simple treatment, and a contact lens packaging solution utilizing the same. The contact lens care preparation is composed of a solution containing 0.01 to 2 weight/volume % of a polymer having particular monomer units with a phosphorylcholine-like group, particular (meth)acrylamide derivative units, and particular monomer units with a hydrophobic group at a particular ratio, and a weight average molecular weight of 5,000 to 2,000,000, and is useful as a contact lens packaging solution.

Abstract: A disinfectant detergent composition containing a food or food additive as a main component is provided. The disinfectant detergent composition contains the following components (a), (b), and (c). The sum [a+b] of the component (a) content and the component (b) content of the composition ranges from 0.1% to 30% by mass, the mass ratio [a/b] of the component (a) to the component (b) ranges from 1/2 to 4/1, and the component (c) content of the composition ranges from 60% to 99.5% by mass. (a) polyoxyethylene sorbitan monolaurate (b) a fatty acid glyceride in which the number of carbon atoms of its acyl group ranges from 8 to 12, the monoglyceride content of the component (b) being 85% by mass or more, the mass fraction of 1-monoglyceride relative to the total amount of monoglycerides being in the range of 0.9 to 1.0 (c) water and/or ethanol.

Abstract: An agent for suppressing pollen dispersal, containing an oleic acid derivative or a linoleic acid derivative as an active ingredient, which does not influence the trunk, branches and leaves of trees, shows a sharp efficacy on the male organ and is in the form of a solution or emulsion having solution stability by diluting with water.

Abstract: A method for purifying a polyethylene glycol compound having one amino group, which includes (A) preparing an aqueous solution of the compound having a pH of 1 to 5, (B) an extracting step of mixing the aqueous solution with a mixed organic solvent to cause layer separation into organic and aqueous layers, wherein a ratio of an organic solvent I is 25 to 65% by mass and a ratio of an organic solvent II is 75 to 35% by mass, the organic solvent I is selected from an aromatic hydrocarbon and an ester, the organic solvent II is a halogenated hydrocarbon, and a mixing ratio Y of I to II, temperature T (° C.) at mixing, and molecular weight M of the compound satisfy the following relationship: 1.9×10?6M+0.09?Y?0.015T??1.4×10?6M+0.44 and (C) recovering the compound from the aqueous layer.

Abstract: There is provided a toner for developing electrostatic images, including an external additive and colored resin particles containing a binder resin, a colorant and softening agents. The colored resin particles contain a monoester compound A represented by formula (1) and a monoester compound B represented by formula (2) as softening agents. A content of the monoester compound A is in the range from 95 to 99% by mass, a content of the monoester compound B is in the range from 1 to 5% by mass, and a content of the softening agents is in the range from 10 to 30 parts by mass, with respect to 100 parts by mass of the binder resin. Formula (1) is R1—COO—R2. Formula (2) is R3—COO—R4.

Abstract: A hydrophilic polymer derivative having a benzylidene acetal linker whose hydrolysis rate at the pH of a weakly acidic environment in the living body can be accurately controlled. A hydrophilic polymer derivative having a benzylidene acetal linker, which is represented by the following formula (1): wherein R1 is a hydrogen atom or a hydrocarbon group; R2, R3, R4, R5, and R6 are each independently a hydrogen atom or a substituent and at least one of R3, R4, and R5 is an electron-withdrawing substituent or at least one of R2 and R6 represents a substituent; X1 is a chemically reactive functional group; P is a hydrophilic polymer; w is an integer of 1 to 8; and Z1 and Z2 are an independently selected divalent spacer.

Abstract: Provided are: a fouling inhibitor that is capable of effectively inhibiting fouling of porous filtration membranes use as water purification membranes or the like, that has resistance to chemicals, such as alkali used when the membrane is fouled, and that is capable of maintaining such effects sufficiently even after chemical wash; a filtration membrane provided with the inhibitor; and a method for producing the same. The inhibitor contains: (A) a copolymer having a weight average molecular weight of 10000 to 300000 and contains a MPC unit (a1) and a BMA unit (a2), wherein the ratio of (a1) to (a2) ((a1)/(a2)) by mole is 10/90 to 70/30; and (B) PVA having a saponification degree of 72 to 93 mol % and a polymerization degree of 300 to 1000, wherein the ratio of component (A) to component (B) ((A)/(B)) by mass is 25/75 to 75/25.

Abstract: The present invention relates to an ester for refrigerator oils having less remaining by-products in the ester and having high thermal stability, and a method for producing the ester for refrigerator oils. The ester for refrigerator oils is obtained by treating a crude ester product, which is obtained by reacting a neopentyl polyol having a carbon number of 5 to 10 with an aliphatic carboxylic acid having a carbon number of 4 to 12, with one or more kinds of salts selected from the group consisting of sulfite, bisulfite, and pyrosulfite.