摘要:
A coating material including a perfluorocarbon sulfonic acid resin which is a copolymer including a polymerization unit represented by —(CF2—CFZ)—, in the formula, Z being H, Cl, F, or a C1-C3 perfluoroalkyl group, and a polymerization unit represented by —(CF2—CF(—O—(CF2)m—SO3H))—, in the formula, m being an integer of 1 to 12, and the perfluorocarbon sulfonic acid resin has an equivalent weight EW of 200 to 1000. Also disclosed is a laminate including a base material and a hydrophilic layer formed from the coating material.
摘要:
The invention provides a technique enabling the separation and recovery of an unreacted fluoromonomer from an aqueous fluoropolymer dispersion obtained by emulsion polymerization, without using any extraction solvent, and enabling the prevention of a hydrolysis of —SO2F and a like sulfonic acid precursor functional group convertible to sulfonic acid group. Thus, the invention provides a recovering method fluoromonomer having a sulfonic acid precursor functional group convertible to a sulfonic acid group and remaining unreacted from an aqueous fluoropolymer dispersion obtained by emulsion polymerization of the fluoromonomer, wherein the unreacted fluoromonomer is recovered from the aqueous fluoropolymer dispersion by evaporation, wherein the aqueous fluoropolymer dispersion has an acidic pH.
摘要:
Disclosed is an electrical capacitance sensor comprising: a board 10 having a one main surface and an other main surface; a sensor electrode 26 formed on the one main surface of the board 10 and detecting an electrical capacitance between the sensor electrode 26 and an object; a first guard electrode 25 formed on the one main surface of the board 10 and in a vicinity of the sensor electrode 26; and a second guard electrode 27 formed on the other main surface of the board 10, wherein a first terminal connecting portion 21 for the first guard electrode 25 and a second terminal connecting portion 23 for the second guard electrode 27 are provided at positions opposing each other.
摘要:
An inductor includes a first magnetic substance core which has a middle leg, a first outer leg, a second outer leg, and a body portion interconnecting the middle leg, the first outer leg and the second outer leg, and a second magnetic substance core which is arranged to be opposed to the first magnetic substance core. A first conductor is arranged in a first space which is formed by the middle leg, the first outer leg, part of the body portion, and the second magnetic substance core. A second conductor is arranged in a second space which is formed by the middle leg, the second outer leg, part of the body portion, and the second magnetic substance core. The middle leg is formed with a region which is lower in height than the first outer leg, in the same direction as the longitudinal direction of the first outer leg.
摘要:
A pant-type disposable garment having a waist opening and a pair of leg openings is disclosed. The garment comprises a first waist panel, a second waist panel and a crotch panel positioned between the first waist panel and the second waist panel. The crotch panel is openable and reclosable with respect to at least the second waist panel. The garment further comprises a releasable joint and a fastening member. The releasable joint releasably joins the crotch panel to the second waist panel to preform a pant shape. The releasable joint is released to first open the crotch panel. The fastening member is capable of refastening the crotch panel to the second waist panel to reform the pant shape after the releasable joint is released.
摘要:
A pant-type disposable garment having a waist opening and a pair of leg openings when in use of the garment is disclosed. The garment comprises a first waist panel, a second waist panel and a crotch panel positioned between the first waist panel and the second waist panel. Each of the first and the second waist panels has an interior surface orienting the wearer's skin and an exterior surface. The crotch panel comprises a first end portion joined to the first waist panel when in use of the garment and a second end portion joined to the second waist panel when in use of the garment. The first end portion of the crotch panel is positioned inside the first waist panel and the second end portion of the crotch panel is positioned inside the second waist panel before use of the garment. The second end portion of the crotch panel is capable of being joined to the exterior surface of the second waist panel to form a pant shape of the garment after the second end portion of the crotch panel is displaced from the inside of the second waist panel.
摘要:
An ignition coil has a connector electrically connected to an external circuit, an igniter for accommodating a switching element adapted to cause a current supplied from the connector to be intermittent, a primary coil portion for generating a predetermined voltage by the intermittent current, a secondary coil portion for stepping up the generated voltage and applying the resulting voltage to an ignition plug, and a resin insulating material which hardens in between the primary coil portion and the secondary coil portion to ensure insulation between the primary coil portion and the secondary coil portion. An outer shell of the igniter is formed of the resin insulating material.
摘要:
A method of manufacturing a thin-film magnetic head, includes the steps of: forming, on a lower auxiliary pole, a three-layer pole tip structure consisting of a lower pole tip element, a recording gap layer and an upper pole tip element; depositing a lower insulating layer on the three-layer pole tip structure; polishing the lower insulating layer by chemical-mechanical polishing so that a top surface of the lower insulating layer is leveled lower than a top of the three-layer pole tip structure over at least a region within which a coil conductor is formed; forming the coil conductor on the lower insulating layer; forming an upper insulating to cover the coil conductor; and forming an upper auxiliary pole so that a part of which contacts to the upper pole tip element.
摘要:
The present invention provides hydrophilic crosslinked polymer fine particles made of a copolymer composed of:2-50% by weight of (a) a monoethylenic monomer having a polyoxyalkylene or polyvinylpyrrolidone chain,20-97% by weight of (b) a (meth)acrylamide type monoethylenic monomer,1-30% by weight of (c) a crosslinkable unsaturated monomer having at least one N-methylol or N-alkoxymethyl group and a polymerizable double bond, and0-50% by weight of (d) other monoethylenic monomer.Said polymer fine particles are superior in polymerization stability as well as in dispersion stability during storage, undergoes no adverse effect by dispersion stabilizer owing to no use of said stabilizer, and are suitably used for formation of a hydrophilic film.
摘要:
The present invention provides a method of preparing sodium formyl acetone using acetone, methyl formate and sodium methoxide as raw materials. A mixture consisting of an acetone and a methyl formate is supplied to a methanol solution of sodium methoxide, or an acetone and a methyl formate are separately supplied simultaneously to the methanol solution of sodium methoxide. The resultant mixture is sufficiently stirred over a predetermined period of time so as to carry out the reaction to form sodium formyl acetone. Also provided is a method of preparing 4,4-dimethoxy-2-butanone. In this method, the reaction mixture obtained in the reaction to form sodium formyl acetone is directly charged into a reaction vessel simultaneously with sulfuric acid to neutralize and acetalize sodium formyl acetone contained in the reaction mixture so as to obtain 4,4-dimethoxy-2-butanone.