Abstract: Disclosed is a semicarbazide derivative represented by formula (1) or a terminal-blocked form thereof: wherein R1 represents a terminal isocyanate group-free polyisocyanate residue or a terminal isocyanate group-free triisocyanate residue; R2 represents an alkylene group, a cycloalkylene group, or an arylene group; each R3 independently represents a hydrogen atom or an alkyl group; n is zero or 1; and each of and m is independently zero or a positive integer, provided l that l and m satisfy the relationship 3≦(l+m)≦20. Also disclosed is (&dgr;) a composition comprising (&agr;) at least one member selected from the group consisting of the semicarbazide derivative and a terminal-blocked form thereof and (&bgr;) at least one member selected from the group consisting of a hydrophilic group-containing compound and a terminal-blocked form thereof.

Abstract: Disclosed is a semicarbazide derivative represented by formula (1) or a terminal-blocked form thereof: ##STR1## wherein R.sup.1 represents a terminal isocyanate group-free polyisocyanate residue or a terminal isocyanate group-free triisocyanate residue; R.sup.2 represents an alkylene group, a cycloalkylene group, or an arylene group; each R.sup.3 independently represents a hydrogen atom or an alkyl group; n is zero or 1; and each of l and m is independently zero or a positive integer, provided that l and m satisfy the relationship 3.ltoreq.(l+m).ltoreq.20. Also disclosed is (.delta.) a composition comprising (.alpha.) at least one member selected from the group consisting of the semicarbazide derivative and a terminal-blocked form thereof and (.beta.) at least one member selected from the group consisting of a hydrophilic group-containing compound and a terminal-blocked form thereof. Also disclosed is a coating composition comprising (.gamma.) a polycarbonyl compound, and component (.alpha.) or composition (.

Abstract: An aluminum nitride (AlN) substrate comprising an AIN sinter, an Al.sub.2 O.sub.3 layer provided on the sinter, and a glass-mixed Al.sub.2 O.sub.3 layer which is provided on the Al.sub.2 O.sub.3 layer and contains Al.sub.2 O.sub.3 and glass mixed therewith, preferably with an oxide particle-dispersed glass layer and a main glass layer provided on the glass-mixed Al.sub.2 O.sub.3 layer. The AlN substrate has heat dissipation properties closer to those of AlN itself, does not cause generation of air bubbles at the junction interface between the AlN sinter and the glass-containing layer, and has excellent surface smoothness and corrosion resistance. The very fine conductive layer, etc. may be readily and firmly formed on the substrate in a stable manner.

Abstract: In order to reliably clean a thermal fixing roll for fixing a non-fixed image in an image forming apparatus such as a copier or a laser beam printer, a non-woven fabric web having a crisscross structure or a parallel structure with a thermally bonded fiber sheet is disposed at least on the side in contact with the fixing roll. The thermally bonded fiber sheet comprises composite fibers including 5 to 70% by weight of electroless nickel plated `CONEX` fibers, which is obtained by depositing metallic nickel to a thickness of up to and including 0.2 .mu.m by an electroless plating method on `CONEX` fibers which have the surface formed with stripe-like grooves, macrovoids, fine irregularities or a modified cross-section and is heat-resistant and excellent in adhesion for nickel, in addition to non-plated `CONEX` fibers and undrawn polyester fibers. Preferably, the above non-fabric web is impregnated with a heat-resistant cationic charging agent as a cleaning roll material.

Abstract: A fluorine-containing resin being soluble in an organic solvent and having excellent compatibility with a curing agent, which contains Component (A) formed of a unit having the formula ##STR1## and at least one of Component (B) formed of a unit having a cyclic hydrocarbon group introduced through a urethane bond in the molecule and Component (C) of a unit having the formula ##STR2## and which further optionally contains Component (D) of a unit formed from a vinyl monomer having a specific functional group, Component (E) of a unit formed from a vinyl monomer other than monomers forming the Components (A), (B), (C) and (D), and Component (T) of a unit formed from an acrylic resin having a specific substituent; and a coating composition containing said resin, (wherein V, Y, X, Z, R.sup.c1, R.sup.c2 and R.sup.c3 are as defined in the specification).

Abstract: A magnetic medium in which the non-magnetic layer comprises nickel-copper-phosphorus film containing 20 to 65 wt % of copper, in which layer is formed by electroless plating. The non-magnetic layer does not become magnetic even after heat treatment at 200.degree. C. or above.

Abstract: A method of and a system for equipping a vehicle body, particularly a railroad car body, in which the vehicle body is supported for turning movement about a center axis of shafts extending longitudinally substantially through the center of gravity of the vehicle body, and the vehicle body is moved in turning movement to a desired angular position about the center axis of the shafts to perform equipping operations on both the interior and exterior thereof. The system includes a securing device connected to opposite end portions of the vehicle body, a support device for supporting the vehicle body through the securing device and moving same in turning movement about a center axis of shafts extending longitudinally substantially through the center of gravity of the vehicle body, a device for moving the vehicle body in turning movement about the center axis of the shafts, and a fixing device for fixing the vehicle body in place in an arbitrarily selected angular position.

Abstract: An apparatus and method for assembling a structure comprising a framing and shell plates spread thereon. The apparatus has (a) a frame clamping device, which consists of a rectangular base, longitudinal girders arranged in parallel on both sides of the base and frame clamping jigs arranged on the base and longitudinal girders to place and clamp each member of the framing in given relative position, and (b) a structure assembling device, which consists of a stand whose top surface is of the same shape as a given outside surface of a shell plate, and shell tensioning jigs attached to the stand, to extend the roof shell plate placed on the stand while aligning the shell plate to proper position on the stand. The framing and shell plate are assembled by crowning the structure assembly device with the shell plate already set on it with the frame clamping device with the framing already set on it, placing the framing in relative position on the shell plate, and welding the shell plate to the framing.