Abstract: A material having a substrate and a coating formed on the surface of the substrate, in which the coating contains a resin swellable with water such as an acrylic copolymer, and a water-soluble compound such as polyethylene glycol. When such a coating is formed on the surface of a material such as an office automation sheet, inks and other deposits can be easily removed with water from the surface, and the office automation sheet can be repeatedly used. Thus, such a coating is useful for reserving resources and protecting environments. Furthermore, dirts can be easily removed from furniture, electric appliances, and the like.

Abstract: A coating fixed to the surface of a material, the coating comprising a hydrophilic resin which swells with water but is not washed away, and is solid in air at ambient temperature, from which a deposit, such as a toner ink, can be readily removed with water.

Abstract: An organic compound of the formula: R.sub.1 -Z.sub.1 -R.sub.3 -Z.sub.2 -R.sub.2 in which R.sub.1 and R.sub.2 represent a linear, branched or cyclic saturated or unsaturated hydrocarbon group, a polyether group, a polyester group, a polyamide group or a polycarbonate group; Z.sub.1 and Z.sub.2 represent an amide bond, an ether bond, a urethane bond, a urea bond or an amine salt bond formed by a reaction between an acid and an amine; and R.sub.3 is a group of the formula: --(CH.sub.2).sub.x --(CF.sub.2).sub.y --(CH.sub.2).sub.z -- in which x and z are an integer of 1 to 4, and y is an integer of 4 to 34 which is useful as a lubricant to be used, for example in a magnetic recording medium.

Abstract: A lubricant containing a branched aliphatic diester of the general formula: R.sub.1 R.sub.2 R.sub.3 C--(CH.sub.2).sub.n --X--R--X'--(CH.sub.2).sub.n --CR.sub.4 R.sub.5 R.sub.6 in which R.sub.1 to R.sub.6 independently represent a hydrocarbon group having 1-18 carbon atoms; R is a fluorinated hydrocarbon group having 6 to 18 carbon atoms; either one of X and X' represent either one of --OCO-- and --COO--, while the other of X and X' represent the other of --OCO-- and --COO--; and n is an integer from 0 to 6, and optionally an aliphatic amine of the general formula: R.sub.7 NR.sub.8 R.sub.9 in which R.sub.7, R.sub.8 and R.sub.9 independently represent a hydrogen atom or a hydrocarbon group having 1 to 26 carbon atoms.

Abstract: A reversibly changeable heat-sensitive recording medium comprising a heat-sensitive layer which comprises a support, and a resin matrix and a low molecular weight organic material dispersed inside the resin matrix, the transparency of which changes reversibly depending on the temperature and which is formed on a support, and, if necessary, including a protection layer or an intermediate layer prepared above the heat-sensitive layer or on the lower surface of the support layer or between the support layer and any other layer or between any other layers in the reversibly changeable heat-sensitive recording medium, characterized in that a fluorescent body which emits visible light through the excitement by visible light is included in at least a portion of the support body, heat-sensitive layer and, if necessary, any other layer. This medium has excellent visibility and can be used with backgrounds of any of many possible colors.

Abstract: A reversible heat-sensitive recording medium comprising a support; a heat-sensitive layer formed on top of the support, which layer comprises a resin matrix and a low molecular weight organic compound dispersed in said matrix, and a transparency of which is reversibly changeable depending on the temperature, in which a conductive powder is contained in at least a part of the support and heat-sensitive layer, which medium has a low-surface resistivity and excellent anti-static properties.

Abstract: A lubricating agent contains at least one alkylene oxide derivative having an alkylene oxide group and an ester moiety or an ammonium salt moiety, which is represented by the following general formula (1), (2), (3) or (4) :R.sup.1 --O--(R.sup.2 O).sub.m --R.sup.3 --COO--R.sup.4 (1)R.sup.1 --O--(R.sup.2 O).sub.m --R.sup.3 --COONH.sub.3 --R.sup.4(2)R.sup.4 --OCO--R.sup.3 --O--(R.sup.2 O).sub.m --R.sup.3 --COO--R.sup.4(3)R.sup.4 --NH.sub.3 OCO--R.sup.3 --O--(R.sup.2 O).sub.m --R.sup.3 --COONH.sub.3 --R.sup.4 (4)whereinR.sup.1 is a hydrocarbon group having 1 to 26 carbon atoms or a hydrogen atom,R.sup.2 is a hydrocarbon group having 1 to 6 carbon atoms,R.sup.3 is a hydrocarbon group having 1 to 26 carbon atoms,R.sup.4 is a hydrocarbon or fluorocarbon group having 1 to 26 carbon atoms, andm is from 1 to 12.

Abstract: A coated substrate having a material substrate, and a coating composition fixed to a surface of the material substrate as a surface layer, the surface layer containing a hydrophilic resin which swells water but is not washed off by water, and which is solid in air at ambient temperatures that are encountered when said coated substrate is functioning as a reusable printing sheet and from which surface layer prior printing deposits can be readily removed, and when which the coated substrate has a surface resistivity of to 10.sup.5 to 10.sup.13 .OMEGA./.quadrature. at 25.degree. C., 50% RH after being dipped in water for 5 minutes and dried with a hot air of 60.degree. to 90.degree. C. for 5 minutes.

Abstract: A lubricating agent contains at least one alkylene oxide derivative having an alkylene oxide group and an ester moiety or an ammonium salt moiety, which is represented by the following general formula (1), (2), (3) or (4):R.sup.1 --O--(R.sup.2 O).sub.m --R.sup.3 --COO--R.sup.4 (1)R.sup.1 O--(R.sup.2 O).sub.m --R.sup.3 --COONH.sub.3 --R.sup.4 (2)R.sup.4 --OCO--R.sup.3 --O--(R.sup.2 O).sub.m --R.sup.3 --COO--R.sup.4 (3)R.sup.4 --NH.sub.3 OCO--R.sup.3 --O--(R.sup.2 O).sub.m --R.sup.3 --COONH.sub.3 --R.sup.4 (4)wherein R.sup.1 is a hydrocarbon group having 1 to 26 carbon atoms or a hydrogen atom, R.sup.2 is a hydrocarbon group having 1 to 6 carbon atoms, R.sup.3 is a hydrocarbon group having 1 to 26 carbon atoms, R.sup.4 is a hydrocarbon or fluorocarbon group having 1 to 26 carbon atoms, and m is from 1 to 12.

Abstract: An organic compound of the formula: R.sub.1 --Z.sub.1 --R.sub.3 --Z.sub.2 --R.sub.2 in which R.sub.1 and R.sub.2 represent a linear, branched or cyclic saturated or unsaturated hydrocarbon group, a polyether group, a polyester group, a polyamide group or a polycarbonate group; Z.sub.1 and Z.sub.2 represent an amide bond, an ether bond, a urethane bond, a urea bond or an amine salt bond formed by a reaction between an acid and an amine; and R.sub.3 is a group of the formula: --(CH.sub.2).sub.x --(CF.sub.2).sub.y --(CH.sub.2).sub.z in which x and z are an integer of 1 to 4, and y is an integer of 4 to 34 which is useful as a lubricant to be used, for example in a magnetic recording medium.

Abstract: A magnetic recording medium having a non-magnetic substrate and a magnetic layer formed on at least one surface of the substrate and containing a fluorine-containing lubricant on or in a surface thereof, in which the fluorine-containing lubricant is a fluorinated block/non-fluorinated block/fluorinated block triblock copolymer.

Abstract: An image-recording transparent film comprising a flexible film transparent to visible light and a recording layer on which an image is formable with an image-forming apparatus and which is provided on a surface of said flexible film, in which at least a part of the film has an absorption peak in a wavelength range between 250 nm and 400 nm, an absorption peak in a wavelength range between 700 nm and 1200 nm, and an IR light transmission of 40% or less.

Abstract: A lubricant compound which comprises carbon, hydrogen, fluorine and etheric oxygen atoms and which contains perfluoropolyether chain of the formula (A), a perfluoroalkyl chain of the formula (B) and a polyether chain of the formula (C) in combinations of (A) and (C), (B) and (C), or (A) and (C) and of (B) and (C), in a molecule wherein:A is --(C.sub.n F.sub.2n O).sub.m --,wherein n is an integer of 1 to 10 and m is an integer of at least 1;B is --C.sub.n F.sub.2n --,wherein n is an integer of 1 to 15, andC is --(C.sub.n H.sub.2n O).sub.m --,wherein n is an integer of 1 to 6 and m is an integer of at least 1.

Abstract: A magnetic recording medium having a non-magnetic substrate, a ferromagnetic metal thin film layer formed on one surface of the substrate and water adsorbed on the magnetic layer, wherein an ester having a lower hydrolysis speed than n-butyl stearate coexists on the ferromagnetic metal thin film layer with the water.

Abstract: An organic surface-treating agent consisting of a compound which has a lipophilic linear backbone comprising carbon and hydrogen atoms; at least two side chains having an ester, ether, ketone or phenyl group on the backbone chain; a hydrophilic or reactive functional group on at least one molecular end; and a number average molecular weight of at least 300, which improves dispersibility of an inorganic material in an organic solvent when used as a surface-treating agent or a dispersant for the inorganic material.

Abstract: A polycarbonate polyol having a main chain of the formula: ##STR1## wherein R is an aliphatic or alicyclic hydrocarbon group having 4 to 10 carbon atoms, and n is a number of 2.00 to 20.

Abstract: A polycarbonate polyol having a main chain of the formula: ##STR1## wherein R is an aliphatic or alicyclic hydrcarbon group having 4 to 10 carbon atoms, and n is a number of 2.00 to 20.