Abstract: This invention provide a novel cross-linked polyaniline derivative soluble or capable of swelling in general organic solvents, which forms an elastic self-standing film or fibers. The polyaniline derivative substantially comprises a polyaniline having number average molecular weight in a range of from 2,000 to 500,000 represented by the following formula (I) as the main polymer chain, ##STR1## wherein m and n is 0 or an integer of at least 1, m/(m+n)=0-1, and m+n=10-5,000, and cross-linking units represented by the following formula (II) ##STR2## wherein X is a direct bond, a substituted or unsubstituted divalent C.sub.1 -C.sub.30 aliphatic hydrocarbon group, a substituted or unsubstituted divalent aromatic hydrocarbon group, a divalent polysiloxane group or a group derived therefrom, or a divalent group derived from a compound having 2 or more repeating structural unit, Y.sup.1 and Y.sup.

Abstract: Provided are a polyester resin for use in a toner binder which is excellent in terms of offset resistance and low-temperature fixability, which keeps triboelectric charge stability even in an environment of a high temperature and a high humidity, which has excellent durability, and which is used in a toner that gives vivid image characteristics, a process for producing the same, and a toner using the same. The polyester resin for use in the toner binder is formed by linking at least a part of the crosslinked low-molecular polyesters through a dicarboxylic acid used as a linking agent.

Abstract: An adhesive for semiconductor device, comprising (a) a polyamide resin having an amine value of 20 to 60 and a weight average molecular weight of 1,000 to 5,000 and (b) a phenolic compound having a weight average molecular weight of 2,000 or less and having a skeleton containing at least 2 methylol groups.

Abstract: An electrophotographic toner which can be fixed at a low fixing temperature, causes no practical problem on offsetting-free properties and has excellent fixing strength to a transfer sheet, and a process for the production thereof, the toner containing a binder resin and a colorant as main components and further containing a Fischer-Tropsch wax formed from natural gas and/or a Fischer-Tropsch wax formed from coal and having a melt viscosity, measured at 110.degree. C., of 1.times.10.sup.5 to 1.times.10.sup.6 poise, the process comprising solution-polymrerizing, suspension-polymerizing or emulsion-polymerizing a vinyl-containing monomer in which the Fischer-Tropsch wax formed from natural gas and/or a Fischer-Tropsch wax formed from coal are/is dissolved in advance, to prepare the binder resin.

Abstract: An electrophotographic toner containing a binder resin containing an ester which has 2-4 ester bonds and is obtained from a long-chain, linear saturated alcohol as an alcohol component or a long-chain linear saturated fatty acid as an acid component, can be fixed at a low fixing temperature, is free of any practical problem concerning offset-free properties, and has excellent fixing strength to a receptor paper sheet and excellent image characteristics.

Abstract: A semi-transmissive semi-reflective film laminate consisting of a semi-transmissive semi-reflective layer and a film, the semi-transmissive semi-reflective layer being set on the film, characterized in that the semi-transmissive semi-reflective layer contains pearl pigment and a light transmissive resin, the average of the angles of orientation of the pearl pigments being less than 30.degree., the film is a film selected from the group consisting of a support body having a vacant space internally and a polarizing film.

Abstract: A toner for developing an electrostatic image comprising at least a colorant and a binder resin,characterized in that the main component of the binder resin is a polyester resin, and the polyester resin is containing a polymer prepared by reacting a polyester oligomer and at least one compound selected form the group consisting of long chain alcohols and long chain carboxylic acids which have 12 or more carbon atoms.

Abstract: This invention provides an adhesive tape and a liquid adhesive for electronic parts having sufficient thermal resistance and reliability. The adhesive tape of the invention comprises an adhesive layer composed of at least a polyimide selected from (I) a polyimide comprising the repeating unit represented by the following formula (1), (II) a polyimide comprising the repeating unit represented by the following formula (2), and (III) a polyimide comprising the repeating units represented by the following formulas (1) and (2) in a suitable proportion, provided on at least one surface of a heat resistance film or on a surface of a release film: ##STR1## wherein Ar is a divalent group having aromatic rings, Ra is a divalent group having 2 to 6 benzene rings; Rb is an alkylene group having 2 to 20 carbon atoms, a specific ether group or a specific dimethylsiloxane group: X.sup.1 is NH, NR (R is a C.sub.1 -C.sub.4 alkyl group or alkoxy group) or S; and X.sup.2 is NH, NR (R is a C.sub.1 -C.sub.

Abstract: A novel polyimide is soluble in organic solvents and excels in heat resistance. The polyimide comprises 95-40 mol % of the repeating unit represented by the formulas (1) and 60-5 mol % of the repeating unit represented by the formula (2) and has a number average molecular weight of 4,000-200,000: ##STR1## wherein X is --SO.sub.2 -- and/or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--, Ar is a divalent group containing aromatic rings, and R is an alkylene group having 1-10 carbon atoms or a group: --CH.sub.2 OC.sub.6 H.sub.4 --, and n is an integer of 1-20.

Abstract: The present invention provides a suspension polymerization method for producing a polymerized particle having cavities in the particle.

Abstract: An adhesive for bonding a reinforcing sheet to a lead-formed surface of a tape carrier package used for forming a semiconductor device, the adhesive being a resin composition which constitutes an interlayer between the lead-formed surface and the reinforcing sheet, comprises a polyamide resin having an amine value of 3.0 to 50 and an epoxy resin, is free from peeling and foaming, undergoes sufficient softening and curing at a temperature lower than about 150.degree. C., has high insulation reliability after cured, and has heat resistance against a temperature up to 260.degree. C.

Abstract: An electrophotographic toner which can be fixed at a low fixing temperature, causes no practical problem on offsetting-free properties and has excellent fixing strength to a transfer sheet, and a process for the production thereof, the toner containing a binder resin and a colorant as main components and further containing a Fischer-Tropsch wax formed from natural gas and/or a Fischer-Tropsch wax formed from coal and having a melt viscosity, measured at 110.degree. C., of 1.times.10.sup.5 to 1.times.10.sup.6 poise, the process comprising solution-polymrerizing, suspension-polymerizing or emulsion-polymerizing a vinyl-containing monomer in which the Fischer-Tropsch wax formed from natural gas and/or a Fischer-Tropsch wax formed from coal are/is dissolved in advance, to prepare the binder resin.

Abstract: Novel polyimides which are soluble in various organic solvents and excellent in thermal resistance, processability are disclosed. The polyimides comprise repeating units represented by the following formula (1) and/or (2) and having a number average molecular weight of 4,000-200,000. ##STR1## wherein Ar is a divalent group represented by the following formula (2) or (3): ##STR2## wherein Y is --O--, --CO--, --S--, --SO.sub.2 -- or --C(CH.sub.3).sub.2 --, ##STR3## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are each a C.sub.1-4 alkyl group or a C.sub.1-4 alkoxy group, Ra is a divalent group having 2-6 benzene rings, X.sup.1 represents NH, NR (wherein R is a C.sub.1-4 alkyl group or a C.sub.1-4 alkoxy group) or S, Rb is C.sub.2-20 alkylene group, ether group or dimethylsiloxane group, and X.sub.2 represents NH, NR (wherein R is a C.sub.1-4 alkyl group or a C.sub.

Abstract: A polyamide resin is disclosed comprising:a diamine component comprised of at least 50% by mole based on the total diamine component of diamine having diphenyl methane structure substituted by alkyl groups, indicated by the following Formula 1, anda dicarboxylic acid component comprised of at least 50% by mole based on the total dicarboxylic acid component of aromatic dicarboxylic acid having phenolic hydroxyl groups, indicated by the following Formula 2, ##STR1## wherein, R.sup.1 and R.sup.2 are a group or atom selected from the group consisting of a hydrogen atom, a methyl group, an ethyl group, a propyl group, and an isopropyl group, and wherein R.sup.1 and R.sup.2 are not both hydrogen atoms.

Abstract: An adhesive tape for electronic parts, comprising (a) a heat resistant base film, and (b) an adhesive layer laminated on at least one surface of said base film, said adhesive layer comprising(i) a resol type phenol resin, and(ii) an acrylonitrile/butadiene copolymer,in a proportion of from 100 to 500 parts by weight of said resol phenol resin per 100 parts by weight of said acrylonitrile/butadiene copolymer, said resol type phenol resin being selected from the group consisting of bisphenol A type resins, alkylphenol type resins, phenol type resins and their co-condensed type phenol resins which contain as the phenol component at least one member selected from the group consisting of bisphenol A, alkylphenols and phenol.

Abstract: A reversible heat-sensitive recording medium which includes at least a support and formed thereon a heat-sensitive recording layer including at least the following components: an electron-donating color-forming compound having a lactone ring, (b) an electron-accepting compound having a phenolic hydroxyl group, (c) at least one organic compound selected from compounds represented by formulae (I) to (V), and (d) a thermoplastic resin having an erasing action. The content of the thermoplastic resin having an erasing action is being from 15 to 70% by weight based on the total amount of components (a) to (d) Formulae (I) to (V) are as follows:R.sub.1 --CO--N(R.sub.2)R.sub.3 (I)R.sub.1 --CO--NH--R.sub.4 --NH--CO--R.sub.2 (II)R.sub.1 --CO--O--R.sub.2 (III)R.sub.1 --NH--CO--NH--R.sub.2 (IV)R.sub.1 --CO--R.sub.2 (V)wherein R.sub.1 represents an alkyl group, an aryl group, an alkenyl group, or a hydroxyalkyl group; R.sub.2 and R.sub.

Abstract: A biodegradable or hydrolyzable toner for electrophotography, which permits the easy reclaiming and recycling of used copying paper, permits the easy deinking by an existing deinking system, can decrease environmental pollution caused by a toner waste, and has excellent toner properties owing to the uniform dispersion of additives, the toner containing, as a binder resin, a lactic acid-based resin of the formula (1),H--[--O--CH(CH.sub.3)--CO--].sub.n --OR (1)wherein R is an alkali metal or an alkaline earth metal, and n is an integer of 10 to 20,000.

Abstract: A toner for electrophotography, which contains a binder resin having a low softening point so that the toner can be fixed at a low temperature, and which is free from blocking, the toner comprisingtoner matrix particles containing a binder resin containing a resin having an epoxy group, and a colorant, anda cured coating formed from the resin having an epoxy group in the presence of a curing agent,the toner matrix particles being surface-covered with the cured coating.

Abstract: The present invention provide a novel polyimide which is soluble in organic solvents and excels in heat resistance, and to a process for producing the polyimide. The polyimide of the present invention comprises a repeating unit represented by the formula (1) and having a number average molecular weight of from 4,000 to 200,000. ##STR1## wherein X is --SO.sub.2 -- or --C(.dbd.O)--OCH.sub.2 CH.sub.2 O--C(.dbd.O)--, and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are independently an alkyl group having 1 to 4 carbon atoms or an alkoxy group having 1 to 4 carbon atoms.

Abstract: The present invention is to provide an electrostatic chucking device having improved heat conductivity and at the same time increased adsorption area and improved adsorptity as well as having no uneveness on the wafer-provided face. The electrostatic chucking device of the present invention comprises a metal base, an adhesive layer, an electrode layer comprising a metal-deposited or metal-plated layer, and an electrically insulating layer possessing a face for providing a substance to be adhered by suction, laminated thereon in this order.