Abstract: An acrylic ester copolymer plastisol composition comprises (A) copolymer particles comprising, as the major components thereof, (a) 98 to 50 weight % of an alkyl acrylate unit having an alkyl group of 1 to 8 carbon atoms and/or an alkyl methacrylate unit having an alkyl group of 1 to 8 carbon atoms and (b) 2 to 50 weight % of a diene monomer unit, (B) a plasticizer and, optionally, (C) a vulcanizing agent. Another acrylic ester copolymer plastisol composition comprises (A) copolymer particles comprising an ionic crosslinked copolymer prepared by ionic crosslinking of a copolymer comprising, as the major components thereof, (a) 97 to 50 weight % of an alkyl acrylate unit having an alkyl group of 1 to 8 carbon atoms and/or an alkyl methacrylate unit having an alkyl group of 1 to 8 carbon atoms, (b) 2 to 40 weight % of a diene monomer unit and (c) 1 to 20 weight % of a radical polymerizable unsaturated carboxylic acid unit of 3 to 8 carbon atoms having a carboxyl group and (B) a plasticizer.

Abstract: There is provided a water absorbent comprising a magnetic material and a highly water-absorbable resin. Said water absorbent is contacted with a moisture-containing powder and the water absorbent that has absorbed the moisture is then separated from the powder by means of a magnet, whereby the moisture content of the moisture-containing powder can be decreased. Said water absorbent is produced by forming a mixture composed of the highly water-absorbable resin, water and the magnetic material and then drying said mixture.

Abstract: A dressing for a wound having a porous structure of continuous pores throughout the dressing made of minute filaments arranged in three dimensions and filmy links (viewed at a magnification of about 35 to 350) connecting the filaments. The porous structure has pores defined by the filmy interconnections. In other words, the wound dressing has a continuous open-celled structure in an expanded foam. The wound dressing can advantageously be made of a highly biocompatible material, such as poly-.alpha.-amino acid.

Abstract: An additive for improving the dispersibility of a particulate substance in an organic medium, a thermoplastic polymer, or a thermosetting resin, is at least one compound having a ##STR1## bond in the molecule, including, for example, compounds having an oxazolinium ion in the molecule. The preferred additive compounds are oligomeric or polymeric.

Abstract: An epoxy resin adhesive composition has excellent adhesive properties such as impact resistance, tensile shear strength and T-peel strength as well as excellent semi-gelling property. An epoxy resin adhesive composition comprising ionic crosslinking in a polymer utilized as the impact resistance modifier has not only excellent semi-gelling property and mechanical properties of cured products but also excellent storage stability for a long time and it is advantageously utilized when the application occasionally requires storage or standing of the material for one month to one year at the room temperature. The epoxy resin adhesive composition comprises an epoxy resin, a powder core/shell polymer and a heat activation type hardener for epoxy resins. The powder core/shell polymer is composed of a core comprising an acrylate polymer or a methacrylate polymer having a glass transition temperature of -30.degree. C.

Abstract: Disclosed is a pacemaker having an output circuit which is set to a high impedance when the potential of the input signal transmitted through the input-output terminal is within a predetermined range, and is set to a low impedance when the potential of the signal is outside of the range. Therefore, the time when the input to an R wave detection circuit must be stopped due to the after potential becomes extremely short and the failure of detection of an R wave decreases and, further, there are no rapid fluctuations in the potential arising due to the on-off operation of the switch. Further, the pacemaker of the invention may include a pulse lowering circuit for inputting a lowering pulse to the R wave detecting circuit so that the pacing pulse and the following after potential can't be detected as the R wave of the electrical activity of the heart.

Abstract: A recombinant Avipoxvirus having inserted all or a part of cDNA coding for Newcastle disease virus-derived hemagglutinin neuraminidase in a genome region non-essential to proliferation of Avipoxvirus is provided. The recombinant Avipoxvirus is utilizable as vaccine for fowl.

Abstract: A copolymer latex obtained by emulsion-polymerization of 45 to 85% by weight of a conjugated diene monomer, 0.1 to 25% by weight of an ethylenically unsaturated acid monomer, 10 to 45% by weight of a vinyl-pyridine monomer and 0 to 30% by weight of another monomer copolymerizable with these monomers. The surface of the latex particles contains the carboxy groups in an amount of at least 0.01 milliequivalent per gram of the copolymer. An adhesive composition comprising the copolymer latex is useful for boding fibers, particularly polyester fibers, to rubber with a high adhesion strength.

Abstract: A photosensitive elastomeric composition comprising (1) at least one elastomer, (2) an addition-polymerizable compound having at least one CH.sub.2 .dbd.C< group and (3) a polymerization initiator activatable by actinic light, wherein the elastomer (1) is an elastomer selected from (a) an elastomeric polymer composed of a polyene monomer containing at least two non-conjugated double bonds and a conjugated diene-type monomer or both a conjugated diene-type monomer and a copolymerizable vinyl monomer and (b) an elastomeric linear A-B type (wherein A represents a polymer block of a monovinyl aromatic compound and B represents a polymer block of a conjugated diene-type monomer) block copolymer in which a terminal group having a polymerizable ethylenic double bond is present in at least one end of the molecular chain.

Abstract: An abrasion-resistant rubber composition comprises as rubber components (A) 30-95 wt. % of an end-modified butadiene polymer and (B) 70-5 wt. % of a diene rubber other than the end-modified butadiene polymer (A). The end-modified butadiene polymer (A) is obtained by reacting at least one compound to active terminals of a starting butadiene polymer having a trans 1,4 bond content of 70-95 wt. %. The at least one compound is selected from N-substituted aminoketones, N-substituted thioaminoketones, N-substituted amino-aldehydes, N-substituted thioaminoaldehydes and compounds containing in the molecules thereof an atomic group represented by the following formula: ##STR1## in which M stands for an oxygen or sulfur atom.

Abstract: There are provided an acrylic copolymer elastomer containing an acrylic acid polyalkylene glycol ester as a constituent, and a vulcanizable composition comprising said elastomer and a vulcanizing agent, which composition gives a vulcanizate excellent in cold resistance, heat resistance and oil resistance. The acrylic copolymer elastomer is obtained by copolymerizing(a) 45 to 89.9% by weight of a monomer represented by the formula ##STR1## wherein R.sup.1 denotes an alkyl group having 1 to 8 carbon atoms, and/or a monomer represented by the formula ##STR2## wherein R.sup.2 denotes an alkylene group having 1 to 8 carbon atoms, and R.sup.3 denotes an alkyl group having 1 to 8 carbon atoms,(b) 10 to 45% by weight of a monomer represented by the formula ##STR3## wherein R.sup.4 denotes a hydrogen atom or a methyl group, R.sup.5 denotes a hydrocarbon group having 1 to 8 carbon atoms, m is an integer of 2 to 10, and n is an integer of 2 to 3,(c) 0.

Abstract: A magnetic recording medium which comprises a magnetic layer is prepared by a dispersion of a powder of a ferromagnetic material in a binding material which is a macromolecular compound comprising an epoxy group, followed by addition to the dispersion of a silane compound comprising an amino group or a thiol group. A low viscosity magnetic coating material in which a fine powder of magnetic material is dispersed with excellent stability can thus be prepared. The recording medium prepared by using the coating material exhibits excellent magnetic characteristics, excellent durability and excellent running properties under variety of environmental conditions with desirable stability.

Abstract: A composition including a thermoplastic saturated norbornene group polymer and a partially etherified product of a polyhydric alcohol having at least 3 hydroxyl groups incorporated thereinto. The composition exhibits excellent adhesion to the recording film of an optical disk and adhesion to a hard coating film or a protective film formed by coating an acrylic ultraviolet curing coating material or like films without deteriorating the excellent heat resistance and transparency inherent to thermoplastic saturated norbornene group polymers. An optical disk substrate formed of this composition and an optical disk including the optical disk substrate and an information recording film and/or a light reflecting film and a protective film laminated thereon are also disclaimed.

Abstract: The present invention provides a foamable epoxy resin composition (A) 100 parts by weight of a liquid epoxy resin (B) 0.5-20 parts by weight of a latent curing agent, (C) 0.5-15 parts by weight of a foaming agent having a decomposition temperature of 100.degree.-220.degree. C., (D) 0.05-5 parts by weight of a surface active agent and (E) 10-200 parts by weight of a rubbery elastomer or a powdery halogen-free thermoplastic resin of 150 .mu.m or less in average particle diameter, which composition has a melt viscosity of 2.5.times.10.sup.3 -5.times.10.sup.4 dPa.multidot.s at the decomposition temperature of said foaming agent. The composition can provide a foamed material of rigidity and good heat resistance, having an expansion ratio of 5 times or more and a dense cell structure of 0.5 mm or less in average cell diameter.

Abstract: Disclosed herein is a process for the selective hydrogenation of the carbon-carbon double bonds of an unsaturated, nitrile-group-containing polymer with hydrogen in the presence of a hydrogenation catalyst. An aqueous emulsion of the unsaturated, nitrile-group-containing polymer is used. Optionally, an organic solvent capable of dissolving or swelling the polymer is caused to exist at a volume ratio of the aqueous emulsion to the organic solvent in a range of from 1:3 to 1:0. A palladium compound is used as the hydrogenation catalyst. The aqueous emulsion is brought into contact with gaseous or dissolved hydrogen while maintaining an emulsified state.

Abstract: The present invention provides colored spherical fine particles comprising fine particles and a coloring agent uniformly dispersed therein.The colored spherical fine particles of the present invention can be produced by reaction an unsaturated polymer with an aldehyde group- and carboxyl group-containing organic compound in the present of a Lewis acid or a protonic acid to obtain a modified polymer, dissolving or dispersing the modified polymer, together with a coloring agent, in a polymerization monomer, and polymerizing the polymerizable monomer.The colored spherical fine particles of the present invention can be used as a toner for electrostatic image development, as they are. Further, the dispersion composition obtained by dispersing the colored spherical fine particles of the present invention in a medium, can be used as a heat-sensitive transfer ink or as a back coating agent for heat-sensitive transfer ink ribbon or magnetic recording medium.

Abstract: A vibration-damping structural body for a vehicle, which comprises a sublayer sheet composed of a foamed thermoset resin and fusion-bonded onto a vehicle part, and at least one layer, which is fusion-bonded onto the sublayer and is selected from a damping intermediate sheet (2) comprised of a viscoelastic material and restraining sheet (3). The sublayer sheet (1) is formed from a semi-gelled sheet made by heating a forming and thermosetting resin composition comprising (A) an epoxy resin, (B) a coreacting curing agent, (C) a foaming agent, (D) a surface active agent and (E) a rubber-like elastic material or a powdery thermoplastic resin not containing halogen, which is insoluble in the epoxy resin at room temperature, but is miscible with and dispersible in the epoxy resin at 80.degree. to 150.degree. C.

Abstract: A shape-memorizing block copolymer composition characterized by comprising a block copolymer component (I) composed of (A) at least two polymer segments (polymer segments A) having a glass transition temperature of 60.degree. C. to 250.degree. C. and (B) at least one amorphous polymer segment (polymer segment B) having a glass transition temperature which is not lower than -20.degree. C. but lower than the lowest glass transition temperature within those of said polymer segments A with a difference not less than 20.degree. C., the proportion of whole of said polymer segments A to whole of said polymer segment B being in the range of (10/90) to (70/30) by weight; and a rubbery polymer component (II) having a glass transition temperature lower than -20.degree. C., the proportion of said component (I) to said component (II) being in the range of (50/50) to (98/2) by weight.

Abstract: A curable acrylic rubber composition which is comprised of (A) an acrylic polymer and, as a curing agent, a combination of (B) a polymer of a dibutylaminotriazine thiol with (C) 9,10-dihydro-9-oxa-10-phosphaphenanthrene-10 -oxide or a reaction product thereof with a carbonyl compound. This rubber composition is not scorched at room temperature, but is cured at a high rate of reaction at a rubber curing temperature.

Abstract: A harmful substance remover, which is used to remove any of ethylene, mercaptans, amines and aldehydes, is a solid product having a specific surface area of 100 m.sup.2 /g or more obtained by hydrolyzing a metal alkoxide in the presence or absence of a noble metal. The harmful substance remover is utilized by contacting a harmful substance therewith. Such contacting may take place under irradiation of ultraviolet rays.