Abstract: A lubricant additive capable of imparting various functions to a lubricant base oil contains an ester compound (A) represented by formula (1) and an ester compound (B) represented by formula (2). (A):(B) being a mass ratio of the ester compound (A) to the ester compound (B) is 99:1 to 80:20.

Abstract: A lubricant additive includes a monoester carboxylic acid salt (A) represented by formula (1). In formula (1), R1 represents a single bond between carbon atoms of carbonyl groups, or a divalent hydrocarbon group having 1 to 4 carbon atoms, and R2 represents a hydrocarbon group having 1 to 22 carbon atoms. AO represents an oxyalkylene group of one type selected from oxyalkylene groups having 2 to 4 carbon atoms, or a mixed oxyalkylene group of two or more types selected from oxyalkylene groups having 2 to 4 carbon atoms, and n is an average number of added moles of the oxyalkylene group represented by AO and is 0 to 5. M represents organic ammonium.

Abstract: The invention relates to fatty acid magnesium salt particles having an aspect ratio expressed by the following formula (1) of 1.0 or more and 2.0 or less in which the fatty acid has 12 to 22 carbon atoms and in which the average thickness of the fatty acid magnesium salt particles is 250 to 600 nm.

Abstract: The present invention provides a solubilizing agent for hardly water-soluble substances, which contains a compound represented by the formula (1): wherein the symbols in the above formula are as defined in the specification.

Abstract: The present invention relates to a surface treatment agent for soft contact lens, containing a reaction product obtained through a reaction between the following poly(meth)acrylic acid and the following copolymer (P): Poly(meth)acrylic acid: a poly(meth)acrylic acid having an average molecular weight of 1,000 to 2,000,000, and Copolymer (P): a copolymer obtained through polymerization of a specified hydrophilic monomer (nA) and a specified reactive monomer (nB), wherein in the copolymer, the hydrophilic monomer (nA) is 80 to 99 mol %, the reactive monomer (nB) is 1 to 20 mol %, and a weight average molecular weight is 10,000 to 5,000,000. In accordance with the present invention, it is possible to provide a surface treatment agent for soft contact lens capable of tremendously enhancing surface hydrophilicity of a soft contact lens to improve discomfort.

Abstract: An intermediate for production of a branched type hetero monodispersed polyethylene glycol which is represented by formula (2), the intermediate being represented by formula (3) or (40): where X1, L1, L3, Y1, Y2, and n are as defined herein.

Abstract: An antifoggant composition including a copolymer (A), a blocked polyisocyanate hardener (B), colloidal silica (C), a surfactant (D), and water (E), wherein the copolymer (A) is a (meth)acrylate copolymer obtained from a monomer mixture comprising monomer (a-1) represented by general formula (1), monomer (a-2) represented by general formula (2), and monomer (a-3) represented by general formula (3) and the amounts of the blocked polyisocyanate hardener (B), colloidal silica (C), and water (E) are 35-300 parts by mass, 80-600 parts by mass, and 650 parts by mass or more, respectively, per 100 parts by mass of the copolymer (A).

Abstract: A method of producing a compound represented by formula (3): includes: step (1) of performing coupling of a monodispersed polyethylene glycol derivative represented by formula (4) shown below with a compound represented by formula (5) shown below using a base catalyst having a pKa in an aqueous solution of 15 to 20 to obtain a compound represented by formula (6) shown below, step (2) of deprotecting the protective group A of the compound represented by the formula (6) to obtain a compound represented by formula (7) shown below, and step (3) of subjecting the compound represented by the formula (7) to separatory purification; and step (4) of subjecting the compound represented by the formula (7) to deprotection treatment or reduction treatment to obtain the compound represented by formula (3), in an order described above, where Y2, n, A, B, and Z are as defined herein:

Abstract: A method for purifying a specific trityl group-containing monodispersed polyethylene glycol from a mixture containing the trityl group-containing monodispersed polyethylene glycol and a specific ditritylated impurity. The method includes performing steps (A), (B) and (C). Step (A): a step of esterifying the hydroxyl group of the trityl group-containing monodispersed polyethylene glycol by a specific method; Step (B): a step of extracting the esterified compound by a specific method; and Step (C): a step of hydrolyzing the esterified compound to obtain the trityl group-containing monodispersed polyethylene glycol.

Abstract: A composition of zinc salts of carboxylic acids. The carboxylic acids of the zinc salts include 0.5 to 6.0 mass % of a component (A), 0.05 to 1.2 mass % of a component (B) and 88.0 to 98.0 mass % of a component (C) described below. A ratio [(A)/(B)] of a mass of the component (A) with respect to a mass of the component (B) is 99/1 to 75/25, where (A) is a straight chain and saturated carboxylic acid having a carbon number of 12 to 22; (B) is a strait chain and unsaturated carboxylic acid having one unsaturated bond and a carbon number of 18, said unsaturated bond comprising a trans-form double bond; and (C) is a straight-chain and unsaturated carboxylic acid having one unsaturated bond and a carbon number of 18, said unsaturated bond comprising a cis-form double bond.

Abstract: The present invention provides, a cationic lipid represented by the formula (1) (wherein each symbol is as defined in the specification), a lipid membrane structure using the aforementioned cationic lipid, a nucleic acid-introducing agent using the aforementioned cationic lipid, and a method for introducing a nucleic acid by using the aforementioned nucleic acid-introducing agent.

Abstract: The invention provides a composition for oral cavity that can prevent the formation and maturation of biofilms in the oral cavity, improve the taste and the remaining sensation after use in the oral cavity, and is superior in the sense of use. The composition for oral cavity contains 0.001% by mass to 10% by mass of proteoglycan, an algefacient, and one or more members selected from the group consisting of an antimicrobial agent, an anti-inflammatory agent, and a vitamin.

Abstract: A branched type hetero monodispersed polyethylene glycol represented by formula (1) where X1, Y1, n, E, L1, L2 and L3 are as defined herein.

Abstract: A disinfecting composition may contain 0.001 to 5 mass % of an MPC copolymer containing a constituent unit based on 2-(meth)acryloyloxyethyl phosphorylcholine, 5 to 90 mass % of a lower alcohol, and 0.01 to 10 mass % of an aliphatic acid ester-based nonionic surfactant. The MPC copolymer may include one or more copolymer selected from of an MPC copolymer a having a weight average molecular weight of 10,000 to 400,000 and an MPC copolymer b having a weight average molecular weight of 800,000 to 1,800,000. Such a disinfecting composition may be excellent in foam sustainability when it is discharged as a foam and that has moist feeling when it is applied.

Abstract: The invention relates to particles of a calcium salt of a fatty acid having 12 to 22 carbon atoms, wherein the median size is 4.0 ?m to 15.0 ?m, the particle size digest A expressed by the following equation (1) satisfies the relation A?2.0, and the average thickness is 350 to 800 nm. Particle size digest A=(D90?D10)/D50??equation (1) (Here, 4.0?D50?15.0.

Abstract: (Object) When a cyclocarbonate group-containing (meth)acrylate monomer is applied for a polymer used as a paint or the like, it is to provide the cyclocarbonate group-containing (meth)acrylate monomer in which the increase of the viscosity over time is suppressed so that it can used stably for a long time. (Solution) It is provided a cyclocarbonate group-containing (meth)acrylate monomer (A) represented by a formula (1) as follows, wherein a content of di(meth)acrylate monomer (B) represented by a formula (2) as follows is 3 weight % or lower. (R1 represents hydrogen atom or methyl group, R2 represents an alkyl group having a number of carbons of 2 to 10, and X is 0 or 1.) (R3 represents hydrogen atom or methyl group, R4 represents an alkyl group having a number of carbons of 2 to 10, and X is 0 or 1.

Abstract: The dewaxing aid of the present invention is a dewaxing aid including an ethylene-?-olefin copolymer (A) having a molar ratio [(a)/(b)] of (a) ethylene and (b) an ?-olefin having 3 or more and 12 or less carbon atoms of 93/7 to 75/25, and having a weight average molecular weight of 10,000 to 500,000. According to the present invention, a dewaxing aid that is excellent in improving filterability can be provided.

Abstract: A method for purifying a polyethylene glycol compound represented by formula [1], including a Step (A) of dissolving the compound represented by formula [1] in an organic solvent having a Hildebrand solubility parameter of 8 to 10 (cal/cm3)1/2 to obtain a solution, and a Step (B) of mixing the solution with 0.1 to 1 part by mass of an adsorbent made from a hydrotalcite having a specific surface area of 50 to 200 m2/g with respect to 1 part by mass of the compound of the formula [1] to prepare a slurry, where Z, Y1, Y2, A, Polymer, X, a, b, l and m are as defined herein.

Abstract: The phosphorylcholine group-containing polysiloxane monomer of the present invention is represented by the formula (1). In the formula, a represents an integer of 20 to 500, b represents an integer of 1 to 70, c represents an integer of 1 to 70, d represents 0 or 1, p and q each represent 0 or 1, X represents —CH2— or —CH2CH2—, and R represents an alkyl group having 2 to 18 carbon atoms. The present invention provides the phosphorylcholine group-containing polysiloxane monomer which gives, when copolymerized with a polymerizable monomer such as methacrylic acid or a hydrophilic monomer other than methacrylic acid, a polymer that exhibits surface hydrophilicity and sufficient stability as ophthalmic devices.

Abstract: The present invention is a contact lens treatment solution containing the following copolymer A and copolymer B in a ratio of A/B=40/1 to 5/1 (by weight). According to the present invention, there can be provided a contact lens treatment solution capable of removing dirt having adhered to contact lens surfaces, capable of improving lubricity of contact lens surfaces and capable of imparting persisting hydrophilicity to contact lens surfaces, by simple immersion treatment. Copolymer A: a copolymer obtained by copolymerization of a monomer (a) represented by formula (1) and a monomer (b) represented by formula (2), in which the copolymerization ratio of the monomer (a) to the monomer (b), a/b=7/3 to 9/1 (by mol), and having a weight-average molecular weight of 400,000 to 800,000.