Abstract: A polyether-modified polysiloxane containing a perfluoropolyether group and its production method are provided. The polysiloxane has both the properties of a perfluoropolyether and the properties of a polyether-modified silicone, and it also has high affinity for organic solvents as well as coating compositions, cosmetics, and various coating materials. The polysiloxane is represented by the following general formula (1): wherein Rf is a perfluoroalkyl group; X is fluorine atom or trifluoromethyl group; Q is a divalent organic group, R is hydrogen atom, an alkyl group, or acyl group; R1 and R2 are an alkyl group, aryl group, or an aralkyl group; a, b, c, d are 0 to 200; a+b+c+d is at least 1; e is 0 or 1; p and q are 0 to 50 with the proviso that p+q is at least 2; and k is 1 to 3.

Abstract: A vehicle intake duct surrounds a high-flow intake passage, which ensures flow capacity and does not spatially restrict other components. The vehicle includes an engine attached to a vehicle body frame, with the intake duct interconnecting an air cleaner and a throttle body, a transmission for sending engine output to wheels, and a seat mounted on an upper longitudinal frame section of the vehicle body frame. The air cleaner is also provided on the upper longitudinal frame section forward of the seat. The intake duct includes a first extending portion descending rearwardly and downwardly from an outlet of the air cleaner and passing laterally of the throttle body, a curved portion extending rearwardly from the first extending portion and toward a center of the vehicle body frame, and a second extending portion wound around toward a rear portion of the throttle body and connected thereto.

Abstract: Present invention provides a composition for a cosmetic comprising a fluorine-containing silicone polymer having a three-dimensional, cross-linked structure, prepared by addition polymerizing the following (A), (B) and (C) and containing 10 to 30 mass % of the fluorine atoms, relative to a total mass of (A) to (C), (A) a vinyl group-containing organopolysiloxane represented by the following formula (1): (B) an organohydrogenpolysiloxane represented by the following formula (2): and (C) an organopolysiloxane having a reactive group on one end alone and represented by the following formula (3), and further comprising (D) a low viscosity silicone oil with a dynamic viscosity of 50 mm2/s or less at 25 degrees C.

Abstract: Present invention provides a fluorine-containing organopolysiloxane composition comprising a fluorine-containing silicone polymer having a three-dimensional, cross-linked structure, prepared by addition polymerizing the following (A), (B) and (C) and containing 10 to 30 mass % of the fluorine atoms, relative to a total mass of (A) to (C), (A) a vinyl group-containing organopolysiloxane represented by the following formula (1): (B) an organohydrogenpolysiloxane represented by the following formula (2): and (C) an organopolysiloxane having a reactive group on one end alone and represented by the following formula (3), and further comprising (D) a low viscosity silicone oil with a dynamic viscosity of 50 mm2/s or less at 25 degrees C.

Abstract: The present invention relates to a perfluoropolyether-modified polysiloxane represented by general formula (1): wherein X is a divalent group represented by formula —CH2—, —CH2O—, —CH2OCH2— or —Y—NR—CO—, R1, R2, and R3 are, independently of each other, an alkyl group having 1 to 10 carbon atoms or an aryl group; X? is a divalent group represented by formula —CH2—, —OCH2—, —CH2OCH2— or —CO—NR—Y?— a is, independently of each other, 0 or 1; z and z? are, independently of each other, an integer of 5 to 100; and Rf is a divalent group represented by the following general formula (2): —CtF2t[OCF2CF(CF3)]m—OCF2(CF2)rCF2O[CF(CF3)CF2O],CtF2t—??(2) or by the following general formula (3): —Ct?F2t?(OCF2CF2)u(OCF2)vOCt?F2t?—??(3).

Abstract: The present invention relates to a perfluoropolyether-modified polysiloxane represented by general formula (1): wherein Rf is a linear or branched perfluoroalkyl group having 1 to 10 carbon atoms; X is a fluorine atom or a trifluoromethyl group; Q is a divalent organic group having 1 to 12 carbon atoms; R1, R2, and R3 are, independently of each other, an alkyl group having 1 to 10 carbon atoms or an aryl group; a, b, c, and d are, independently of each other, an integer of from 0 to 200, provided that a total of a, b, c and d is 1 or larger; e is an integer of 0 or 1; and z is an integer of from 5 to 100; a method for preparing the same; and a defoaming agent comprising the same.

Abstract: A cowling structure is provided for a motorcycle in which a radiator is disposed behind a front wheel of the motorcycle. The cowling structure includes a main cowling and a sub cowling. The main cowling covers a periphery of the radiator from the front of a handlebar. The sub cowling is provided in the rear of the cowling through a space. The sub cowling is separate from the cowling. The cowling structure allows wind to effectively hit a radiator, and reduces a force necessary for inclining a vehicle body at the time of cornering.

Abstract: Curable fluoropolyether compositions comprising (a) a polyfluorodialkenyl compound, (b) a fluorinated organohydrogenpolysiloxane, (c) a platinum catalyst, (d) hydrophobic silica powder, (e) a tackifier in the form of a specific silicon compound, and (f) an organosiloxane having a SiH group, an epoxy and/or trialkoxysilyl group, and a perfluoroalkyl or perfluoropolyether group cure to thermoplastic resins to form a durable tight bond at a low temperature within a short time and are readily releasable from metal molds.

Abstract: A fluoropolyether rubber composition comprising (A) a polyfluoro compound having at least two alkenyl groups, (B) a fluorinated organohydrogenpolysiloxane having at least one perfluorooxyalkyl, perfluoroalkyl, perfluorooxyalkylene or perfluoroalkylene group and at least two Si—H groups, (C) a platinum group compound, (D) hydrophobic silica powder, and (E) an antioxidant cures briefly at room temperature into a product having the advantages of solvent resistance, chemical resistance, heat resistance, low-temperature properties, low moisture permeability, and electrical properties.

Abstract: Fluorinated organosilicon compounds having formula (1) wherein Rf is a perfluoroalkyl group containing at least one ether bond, Q is a polyether group in the form of a homopolymer chain of ethylene glycol or propylene glycol or a copolymer chain of both, R is hydrogen or alkyl, X is a divalent linking group exclusive of oxygen atom, Y is a divalent linking group, p is an integer of at least 3, and n is a number of 0<n<3 have an excellent surface tension reducing ability and can be produced with ease of molecular weight control while minimizing formation of solvent-insoluble components. These compounds are safe to the human body and useful as a surfactant.

Abstract: Curable fluoropolyether compositions comprising (a) a polyfluorodialkenyl compound, (b) a fluorinated organohydrogenpolysiloxane, (c) a platinum catalyst, (d) hydrophobic silica powder, (e) a tackifier in the form of a specific silicon compound, and (f) an organosiloxane having a SiH group, an epoxy and/or trialkoxysilyl group, and a perfluoroalkyl or perfluoropolyether group cure to thermoplastic resins to form a durable tight bond at a low temperature within a short time and are readily releasable from metal molds.

Abstract: A positive photoresist composition comprising an alkali-soluble resin, a 1,2-quinonediazide compound, an organic solvent, and a fluorinated organosilicon compound of formula (1) serving as a surfactant can be effectively coated to uniformity over large areas and is improved in resist pattern profile. Rf is a C5-C30 perfluoroalkyl group containing at least one ether bond, Q is a polyether group consisting of an ethylene glycol and/or propylene glycol polymer chain, R is H or C1-C4 alkyl, X is a divalent linking group exclusive of oxygen, Y is a divalent linking group, p is an integer of at least 3, and 0<n<3.

Abstract: A cowling structure is provided for a motorcycle in which a radiator is disposed behind a front wheel of the motorcycle. The cowling structure includes a main cowling and a sub cowling. The main cowling covers a periphery of the radiator from the front of a handlebar. The sub cowling is provided in the rear of the cowling through a space. The sub cowling is separate from the cowling. The cowling structure allows wind to effectively hit a radiator, and reduces a force necessary for inclining a vehicle body at the time of cornering.

Abstract: Curable fluoropolyether compositions comprising (a) a polyfluorodialkenyl compound, (b) a fluorinated organohydrogenpolysiloxane, (c) a platinum catalyst, (d) hydrophobic silica powder, and (e) a tackifier in the form of a specific silicon compound cure to thermoplastic resins to form a tight bond within a short time and are readily releasable from metal molds.

Abstract: A positive photoresist composition comprising an alkali-soluble resin, a 1,2-quinonediazide compound, an organic solvent, and a fluorinated organosilicon compound of formula (1) serving as a surfactant can be effectively coated to uniformity over large areas and is improved in resist pattern profile. Rf is a C5-C30 perfluoroalkyl group containing at least one ether bond, Q is a polyether group consisting of an ethylene glycol and/or propylene glycol polymer chain, R is H or C1-C4 alkyl, X is a divalent linking group exclusive of oxygen, Y is a divalent linking group, p is an integer of at least 3, and 0<n<3.

Abstract: Fluorinated organosilicon compounds having formula (1) wherein Rf is a perfluoroalkyl group containing at least one ether bond, Q is a polyether group in the form of a homopolymer chain of ethylene glycol or propylene glycol or a copolymer chain of both, R is hydrogen or alkyl, X is a divalent linking group exclusive of oxygen atom, Y is a divalent linking group, p is an integer of at least 3, and n is a number of 0<n<3 have an excellent surface tension reducing ability and can be produced with ease of molecular weight control while minimizing formation of solvent-insoluble components. These compounds are safe to the human body and useful as a surfactant.

Abstract: Fluoropolyether rubber compositions comprising (A) a polyfluorodialkenyl compound terminated with alkenyl groups, (B) a perfluoropolyalkenyl compound or a polyalkenylsiloxane compound, (C) a fluorine-modified organosilicon compound having at least two SiH groups, (D) a platinum group compound, and (E) hydrophobic silica powder are suited for injection molding, typically by LIMS. Rubber parts resulting from curing have heat resistance, chemical resistance, solvent resistance, low-temperature properties, high hardness and high strength.

Abstract: A resist composition comprising (A) a substantially alkali-insoluble polymer having acidic functional groups protected with acid labile groups, which becomes alkali soluble upon elimination of the acid labile groups, (B) a photoacid generator, and (C) a nonionic fluorinated organosiloxane compound consisting of perfluoroalkyl-containing siloxane bonds and polyoxyethylene type polyether bonds is exposed to UV having a wavelength of at least 150 nm and developed with an alkaline solution to form a pattern without leaving scum.

Abstract: A curable composition comprising (A) a polyfluorodialkenyl compound having at least two alkenyl radicals, (B) a fluorinated organohydrogensiloxane having at least two Si—H radicals, (C) a platinum group compound, (D) a hydrophobic silica powder, and (E) an organosiloxane having a Si—H radical and a trialkyl or trialkoxy-containing organic radical attached to a silicon atom cures into a product having improved solvent resistance, chemical resistance, heat resistance, low-temperature properties, low moisture permeability and electric properties and exhibiting good adhesion to a variety of substrates including metals and plastics by brief heating at relatively low temperatures.

Abstract: A curable fluoropolyether rubber composition comprising (A) a linear fluoropolyether compound having at least two alkenyl groups in a molecule and a perfluoropolyether structure in the backbone, (B) an organosilicon compound having at least two SiH groups, (C) spherical silica having an average particle size of 0.05-2.0 &mgr;m, and (D) a hydrosilylation catalyst cures into a rubber product having solvent resistance, chemical resistance, mold release, water repellency, oil repellency and improved heat conduction.