摘要:
There is provided a polyoxyalkylene polyol or monool (S) represented by formula (2). In the formula (2), R2 represents an m-valent group in which m active hydrogens are removed from the active hydrogen-containing compound (H); Z is an alkylene group or a cycloalkylene group, and these groups are unsubstituted or substituted with a halogen atom or an aryl group. A hydroxyl value x, total degree of unsaturation y and the content of ethylene oxide z satisfy mathematical expression (3). In mathematical expression (3), x represents 5 to 280 mgKOH/g, y represents total degree of unsaturation represented by a unit meq/g, and z is from 0 to 50. R2—[—(ZO)p-(AO)q-(CH2CH2O)r-H] (2) y≦18.9×x−2×(100−z)/100 (3)
摘要:
An object of the present invention is to provide a polyoxyalkylene polyol and a polyoxyalkylene monool, capable of producing a urethane elastomer and a urethane foam which are sufficiently excellent in mechanical properties and moisture resistance.The present invention is directed to a polyoxyalkylene polyol or monool (S), which is an alkylene oxide adduct of an active hydrogen-containing compound (H), wherein 40% or more of hydroxyl groups located at the terminal are primary hydroxyl group-containing groups represented by the general formula (1) shown below, and a hydroxyl value x, the total degree of unsaturation y and the content of ethylene oxide z satisfy a relationship of the mathematical expression (1). [In the general formula (1), R1 represents a hydrogen atom, an alkyl group having 1 to 12 carbon atoms, a cycloalkyl group or a phenyl group, each of which may be substituted with a halogen atom or an aryl group.] y≦28.3×x−2×(100−z)/100 (1) [In the mathematical expression (1), x represents a hydroxyl value, y represents the total degree of unsaturation, and z is the content of ethylene oxide based on the weight of (S) and is from 0 to 50% by weight.
摘要:
A liquid crystal lens element capable of finely adjusting focal length according to the magnitude of applied voltage, and an optical head device employing such a liquid crystal lens element, are provided.On one surface of a transparent substrate 511, a transparent electrode 513 and a concave-convex portion 517 made of a transparent material having a cross section shape approximated by a saw-tooth shape, are formed so as to constitute a plurality of annular portions, and on one surface of a transparent substrate 512, a transparent electrode 514 is formed. The transparent electrodes 513 and 514 constitute annular divided electrode segments, and division positions of the annular electrode segments are made to be agree with division positions of annular portions of the saw-tooth-shaped concave-convex portion 517 of the transparent substrate 511.
摘要:
A semiconductor device includes a barrier metal structure which are sandwiched between an electrode provided on a semiconductor chip and a bump. The barrier metal structure has a first through third conductive metal layers, where the third conductive metal layer as an uppermost layer thereof in contact with the bump covers the second conductive metal layer made of a material which is weak in resistance to diffusion and oxidation.
摘要:
The present invention provides a photopolymerizable liquid crystal monomer having high durability, a low melting point and an enantiotropic property. The photopolymerizable liquid crystal monomer is a 4-(4-(alkyloxycarbonyloxy)benzoyloxy)phenyl acrylate represented by the following formula A [wherein Ph is a 1,4-phenylene group, and R is an alkyl group]: CH2═CHCOO—Ph—OCO—Ph—OCOO—R Formula A Further, the present invention provides a polymer liquid crystal obtained by polymerizing a composition containing the monomer. Further, the present invention provides an optical element employing the polymer liquid crystal, and an optical head employing the optical element as a polarizing hologram element.
摘要:
Provided is a polarizer whereby screen brightness does not become zero regardless of the direction in which a viewer faces when the polarizer is used in a liquid crystal display device capable of displaying three-dimensional images, in which three-dimensional images are visible through a polarizing filter. The polarizer comprises a polarizing film and protective films disposed on both sides of the polarizing film; at least one of the protective films being an oriented film; and the tilt of the orientation axis of the oriented film or an axis orthogonal to the orientation axis relative to the polarization axis of the polarizing film being 1° or more and less than 45°.
摘要:
The invention provides a liquid crystal display device, as well as a polarizer and a protective film suitable for the liquid crystal display device. The liquid crystal display device comprises a backlight light source, two polarizers, and a liquid crystal cell disposed between the two polarizers; the backlight light source being a white light-emitting diode light source; each of the two polarizers comprising a polarizing film and protective films laminated on both sides of the polarizing film; at least one of the protective films being a polyester film having an adhesion-facilitating layer; the polyester film having a retardation of 3,000 to 30,000 nm; and the adhesion-facilitating layer comprising a polyester resin (A) and a polyvinyl alcohol resin (B).
摘要:
Provided is a polarizer whereby screen brightness does not become zero regardless of the direction in which a viewer faces when the polarizer is used in a liquid crystal display device capable of displaying three-dimensional images, in which three-dimensional images are visible through a polarizing filter. The polarizer comprises a polarizing film and protective films disposed on both sides of the polarizing film; at least one of the protective films being an oriented film; and the tilt of the orientation axis or an axis orthogonal to the orientation axis of the oriented film relative to the polarization axis of the polarizing film being 1° or more and less than 45°.
摘要:
It is aimed to eliminate charges accumulated inside a wall structure of a resin vessel 2, which is sterilized by an electron beam irradiator 16, and an ionizer 134 disposed outside a filler 112 emits to the outer surface of the resin vessel 2 with negative ions having the same polarity as that of charges accumulated in the wall section of the resin vessel 2, while conveying the resin vessel 2 sterilized by the electron beam irradiator 16 to the filler 112, by which liquid fills the resin vessel 2. A filling nozzle 132 is connected to ground, and an ion flowing path is formed through a liquid column La filling the interior of the resin vessel 2 from the filling nozzle 132. The ions having the negative charges in a filling liquid L flow toward ground side of the ionizer 134, and on the other hand, ions having positive charges are attracted to the inner surface of the resin vessel 2 to thereby neutralize the charges remaining inside the wall structure of the resin vessel 2 with the ions having the positive charges.