Abstract: Excellent water repellency and Oil repellency are imparted to a textile by a method including (1) preparing a treatment liquid comprising a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent comprises at least one fluorine-containing compound selected from the group consisting of a fluorine-containing polymer and a fluorine-containing low molecular weight compound, and the water- and oil-repellent agent or the treatment liquid contains a cationic emulsifier and/or a salt.

Abstract: A surface-treating agent comprises a fluoropolymer comprising (A) repeating units derived from a fluorine-containing monomer of the formula: (B) repeating units derived from a monomer free from a fluorine atom, and (C) optionally, repeating units derived from a crosslinkable monomer. The surface treating agent is excellent in water repellency, oil repellency and unsusceptibility to fouling even when the side chains are C4 or lower fluoroalkyl groups.

Abstract: According to the present invention, there can be obtained an anisotropic material comprising an alternating-line pattern and a layer of a functional compound formed on the surface of the alternating-line pattern, wherein one type of lines is made of a fluorine-containing compound and the other type of lines is made of a non-fluorinated compound in the alternating-line surface. When using, as a template, a pattern surface produced by using a fluorine compound having a specific structure as a surface-treating agent, a structure of a functional compound of nanometer to micrometer order can be produced by a process of applying a functional compound solution. Properties of a functional compound can be improved by using, as a template, a pattern surface, at least one region of which is surface-treated with a fluorine compound having a specific structure.

Abstract: There is provided a surface treatment agent which comprises a fluoropolymer having repeating units derived from a fluorine-containing monomer of the formula: wherein (a) the fluoropolymer contains a silicon atom, and/or (b) the surface treatment agent contains a fluorine-free polymer which is different from the fluoropolymer and which is a silicon-containing polymer. The surface treatment agent imparts excellent water- and oil-repellency and soil resistance to textiles while retaining the feeling of the textiles, even if the surface treatment agent contains a fluorine-containing acrylate polymer substituted at its ?-position by a fluorine atom, a chlorine atom or the like.

Abstract: A fluorine-containing urethane compound of the general formula: [Rf-A1-(X1(OH))—(Y1)a—OC(?O)NH—]m I [—NHC(?O)O—Y2]n[—NHC(?O)O—((ClCH2—)X2O)b—R1]k ??(1) wherein I is a group remaining after an isocyanate group is removed from a polyisocyanate compound, Rf is a perfluoroalkyl group having 2 to 21 carbon atoms, A1 is a direct bond or a divalent organic group having 1 to 21 carbon atoms, X1 and X2 are trivalent linear or branched aliphatic group having 2 to 5 carbon atoms, Y1 is a divalent organic group having 0 to 5 carbon atoms and 0 to 2 nitrogen atoms (provided that at least one carbon atom or nitrogen atom is present) and at least one hydrogen atom, Y2 is a monovalent organic group optionally having a hydroxyl group, and R1 is a hydrogen atom or an alkyl group having 1 to 10 carbon atoms, can impart high water- and oil-repellency.

Abstract: A fish-type underwater navigation body includes a caudal turning section provided for a caudal section of a main unit, a pair of first side turning sections provided in front lower sections of the main unit, and a pair of second side turning sections provided in side lower sections between a center section and the caudal section in the main unit. The fish-type underwater navigation body gets propulsion by turning the caudal turning section. Also, the pair of first side turning sections, the pair of second side turning sections and the caudal turning section function for attitude control of the fish-type underwater navigation body.

Abstract: A textile having durability of maintaining water- and sufficient oil-repellency and soil releasability before and after cleaning can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid containing a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is an emulsion containing a fluorine-containing compound and an emulsifier, the fluorine-containing compound is a fluorine-containing polymer and/or a fluorine-containing low molecular weight compound, and the emulsifier contains an anionic surface active agent having pKa of at least 2.

Abstract: An electroacoustic transducer comprises: a lower electrode; an upper electrode including an oscillation portion and a support portion for supporting the oscillation portion at least at a part of a periphery of the oscillation portion; and an insulating layer for insulating the lower electrode from the upper electrode, wherein the upper electrode has an up and down in the oscillation portion and/or in the support portion to provide a cavity between the upper electrode and the lower electrode.

Abstract: Excellent stain block property, WAQE resistance and yellowing resistance are imparted to a textile by a method of preparing a treated textile has the steps of (1) preparing a treatment liquid comprising a stain blocking agent and a sulfated castor oil and having pH of at most 7, (2) applying the treatment liquid to the textile, (3) treating the textile with steam, and (4) washing the textile with water and dehydrating the textile.

Abstract: Excellent water- and oil-repellency and soil releasability can be obtained by a method of preparing a treated textile, having steps of:

Abstract: A fluorine-containing polymer which is an active component of a surface treatment agent having excellent water- and oil-repellency is constituted by a fluorine-containing polyether monomer of the formula: 1

Abstract: A composition comprising (A) a copolymer which comprises (I) repeating units which are derived from a monomer having a fluoroalkyl group, a carbon-carbon double bond, (II) optional repeating units which are derived from a monomer having at least two urethane or urea bonds and a carbon-carbon double bond, but no fluorine atom, (III) optional repeating units which are derived from a monomer, the homopolymer of which having a glass transition temperature (Tg) of 50° C. or less, (IV) optional repeating units which are derived from a monomer having a hydrophilic group and a carbon-carbon double bond, and (V) optional repeating units which are derived from a monomer having a chlorine atom and a carbon-carbon double bond; and (B) a film-forming auxiliary can impart high water and oil repellency by drying at room temperature (0 to 30° C.) without requiring a heat treatment step.

Abstract: An underwater propelling apparatus includes a body and a plurality of vibrating units. The plurality of vibrating units are placed in parallel to each other on a rear side of the body. Each of the plurality of vibrating units vibrates repeatedly and reciprocally to produce thrust.

Abstract: A method of preparing a treated textile, having steps of: (1) preparing a treatment liquid comprising a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent contains (A) a fluorine-containing compound which is a fluorine-containing polymer, and (B) a urethane compound and/or (C) a silicon-containing compound, can give a textile which is excellent in water repellency, oil repellency and soil releasability, when the textile is treated with the treatment liquid by an Exhaust process.

Abstract: An underwater propelling apparatus, includes a body and a plurality of vibrating units. The plurality of vibrating units are placed in parallel to each other on a rear side of the body. Each of the plurality of vibrating units vibrates repeatedly and reciprocally to produce a thrust.

Abstract: A textile having durability of maintaining water- and sufficient oil-repellency and soil releasability before and after cleaning can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid containing a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is an emulsion containing a fluorine-containing compound and an emulsifier, the fluorine-containing compound is a fluorine-containing polymer and/or a fluorine-containing low molecular weight compound, and the emulsifier contains an anionic surface active agent having pKa of at least 2.

Abstract: A method of preparing a treated textile, having steps of: (1) preparing a treatment liquid comprising a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent contains (A) a fluorine-containing compound which is a fluorine-containing polymer, and (B) a urethane compound and/or (C) a silicon-containing compound, can give a textile which is excellent in water repellency, oil repellency and soil releasability, when the textile is treated with the treatment liquid by an Exhaust process.

Abstract: A textile having excellent water- and oil-repellency can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid comprising a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is at least one fluorine-containing compound selected from the group consisting of a fluorine-containing polymer and a fluorine-containing low molecular weight compound, and the water- and oil-repellent agent or the treatment liquid contains an organic salt.

Abstract: A textile having sufficient water repellency, oil repellency and soil releasability before and after cleaning can be prepared by a method of preparing a treated textile has the steps of (1) preparing a treatment liquid containing a water- and oil-repellent agent and a stain blocking agent, (2) bringing the pH of the treatment liquid to at most 7, (3) applying the treatment liquid to the textile, (4) thermally treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent has a combination of (A) a fluorine-containing polymer comprising a repeat unit derived from vinyl chloride and/or vinylidene chloride, and (B) a fluorine-containing polymer free from a repeat unit derived from vinyl chloride and/or vinylidene chloride.

Abstract: Excellent water repellency and Oil repellency are imparted to a textile by a method including