Abstract: This invention provides a magneto-optical recording medium comprised of a substrate, a base layer of zinc oxide or indium oxide sputtered onto the substrate and a multilayer recording film sputtered onto the base layer of zinc oxide or indium oxide, wherein the base layer or zinc oxide or indium oxide is from about 200 A to about 4500 A (about 20 nm to about 450 nm) thick, preferably from about 200 A to about 2000 A (about 20 nm to about 200 nm) thick, the multilayer recording film is a platinum/cobalt or a palladium/cobalt multilayer film consisting of alternating layers of platinum and cobalt or palladium and cobalt, and the substrate is transparent to the radiation used to record and read.

Abstract: The running properties and durability under a wide range of temperature and humidity conditions are improved by the presence of terminally modified polyhexafluoropropylene on a thin ferromagnetic metal film.

Abstract: The magnetic recording medium comprises a substrate, a recording coating of a ferromagnetic metal and an aromatic organic polymer having a weight-average molecular weight of 1,000 to 5,000,000. The magnetic recording medium is produced by a plating method or a vaporization method so as to form co-deposition of the metal and the polymer. The magnetic recording medium produced is improved in resistance to corrosion.

Abstract: A disposable two-ply vacuum cleaner bag comprises a highly air permeable inner filter ply of randomly intertangled, discontinuous microfibers of synthetic material and a conventional outer ply of air permeable material.

Abstract: Disclosed herein are plate-like composite ferrite particles for magnetic recording comprising plate-like composite ferrite containing Ba particles having a composition represented by 19<(Fe+M)/Ba.ltoreq.22, wherein M represents at least one metal (II) selected from the group consisting of Co, Ni, Zn, Mn and Mg and at least one metal (IV) selected from the group consisting of Ti, Sn, Zr and Ge, in which Ba exists in the composition at a linear concentration gradient between the surface and the nucleation portion of said particles, and a process for producing such plate-like composite ferrite particles.

Abstract: The polypropylene-based composite resin composition of the invention, which can be molded into a shaped article having excellent surface hardness and impact strength at low temperatures and usable as a shell plate member of automobiles, comprises (a) a polypropylene resin as the matrix phase, (b) particles of rubber-reinforced styrene-based resin as the dispersed phase having a specified area-average particle diameter, of which the rubber particles having a specified area-average particle diameter forms a "salami" structure as dispersed in the styrene-based resin, and (c) a layer of a compatibility improver, such as a styrene-based thermoplastic elastomer, on the surface of the particles of the rubber-reinforced styrene-based resin in a specified thickness.

Abstract: A glazing having a hydrophobic anti-frost surface formed from a composition of at least organosilane with a long aliphatic hydrocarbon chain which may or may not be saturated in a non-polar solvent system containing a non-polar hydrocarbon solvent and a small amount of a chlorinated solvent or a mixture of chlorinated solvents.

Abstract: A magnetic recording medium comprising a non-magnetic substrate and a magnetic layer composed of a ferromagnetic material having a face-centered cubic structure and at least one of a carbon, silicon, a hydrocarbon compound and an organosilicone compound, provided on the non-magnetic substrate, has a high coercive force, a good head running property and a high durability.

Abstract: A magnetooptical recording element having improved corrosion and oxidation resistance comprises a substrate and a magnetooptical recording film having a composition represented by the formula:(TbFeCo).sub.1-x-y Zr.sub.x Pd.sub.ywherein x and y represent atomic percent,1.ltoreq.x.ltoreq.15 and 1.ltoreq.y.ltoreq.15.

Abstract: An optical recording medium, particularly a magneto-optical recording medium, resistant to oxidation deterioration even in a hot and humid atmosphere, is provided by forming an organic protecting adhesive layer of a UV-curved resin having (1) an acid value of not more than 1.5; and (2) a softening point of not less than 50.degree. C. The UV-curved resin layer comprises 15 to 85% by weight of acrylate and/or methacrylate having at least three functionalities; 15 to 70% by weight of a compound having a linear structure and having a molecular weight of at least 300, the compound preferably having at least one ethylenically unsaturated bond and a molecular weight of at least 150 per ethylenically unsaturated bond; and (3) a photopolymerization initiator.

Abstract: The composite material according to the invention has carbon reinforcing fibres (2) coated with a carbon coating (6) and then a SiC coating (8), embedded in a carbon-based matrix, covered by an outer silicon carbide layer (10), sealed by a silicon carbide coating (14), then an aluminium or hafnium nitride coating (16) and finally an outer alumina coating (18). This stainless material can be used as a heat shield for space shuttles.

Abstract: Monocrystalline MnZn-ferroferrite material having a high Zn-content, and magnetic head comprising the said material.A monocrystalline MnZn-ferroferrite material for use in a magnetic head is described. The material corresponds to the formulaMn.sub.a Zn.sub.b Fe.sub.c.sup.II Fe.sub.2.sup.III O.sub.4,wherein0.25<a<0.48;0.50<b<0.60;0.02<c<0.15;a+b+c=1.The magnetostriction constants of this material are particularly small.

Abstract: Disclosed are image release sheets which comprise a dielectric coated substrate and a silicone-urea block polymer coating for the dielectric substrate. The silicone-urea block polymer functions as a release coating when the image sheet is used in electrographic processes. Excellent transfer of an image from a donor element, comprising the silicone-urea block polymer as a release coating, to a receptor substrate occurs. In a preferred embodiment, a pH sensitive indicator such as thymolphthalein can be added to the release coating in order to monitor the thickness of the coating.

Abstract: A polyester laminated film comprising a polyester inner layer having a density greater than 1.3 g/cm.sup.3 and polyester outer layers on both sides of said inner layer having a density in the range of 0.4 to 1.3 g/cm.sup.3 is disclosed. The laminated film of this invention has high discrimination property and is also improved in image printability on the film surface in comparison with the conventional polyester films. When, for instance, the present laminated film is used as base for prepaid cards, which is a preferred application of the present film, it contributes to the enhancement of security of the cards, and it also enables high-quality printing by thermal transfer method.

Abstract: A silicon-modified organic surface is roughened by treatment with an oxygen containing plasma. If necessary the organic surface may be silicon-modified by treatment with a silicon containing material prior to plasma treatment. The roughened organic surface provides improved adhesion to other organic surfaces and to deposited metals. Improvements in methods for laminating organic surfaces and for depositing metals on organic surfaces which achieve improved adhesion are disclosed. Structures comprising laminated organic layers of metal deposited on organic surfaces which provide improved adhesion between the organic layers or between the metal and the organic surface are also disclosed.