Abstract: Inorganic fillers such as silica balloons are used as a lightweight filler for resin moldings. But the specific gravity of these inorganic fillers is about 0.2 at most, so that there is a limit to reduction in weight. The foamed product of organic polymers is obtained as a lightweight substance, but it is hardly put to practical use because of its poor solvent resistance and thermal resistance.The microballoon of the present invention is produced by coating the surface of a hollow particle having the wall film of a thermoplastic high polymer with a thermosetting resin.The present invention provides a microballoon having excellent solvent resistance and thermal resistance as well as a very low specific gravity, and said microballoon is useful as a lightweight filler for resin moldings, aggregate for FRP, ingredient for paints, and the like.

Abstract: A self-priming pressure-sensitive adhesive bonding tape is provided having a layer of a primary pressure-sensitive adhesive material coated onto one or more surfaces with a film of a secondary pressure-sensitive adhesive material. Both the primary and secondary pressure-sensitive adhesives are modified by the addition of adhesion promoters to enhance the wetting characteristics of the tape. The film thickness of the secondary pressure-sensitive adhesive is such that the film has discontinuities which enable at least a portion of the primary pressure-sensitive adhesive layer to be directly exposed to the substrate. Bonding is accomplished with the participation of both the primary and secondary pressure-sensitive adhesives.

Abstract: A transparentized paper with a caliper of between 0.001 and 0.015 inch and the process for its preparation is disclosed. A paper web is treated with a liquid mixture of polyesters, acid monoesters of polyols and dicarboxylic acids in non aqueous polaric solvents having admixed therein methylol derivatives of polyamino compounds, with or without a catalyst. The impregnated paper is cured by an in-situ cross-linking reaction immobilizing the impregnated material. A transparentized paper results which is resistant to water, most organic solvents and heat and is useful as tracing material as well as a translucent base for sensitizing with reprographic coatings. The transparentized paper is not resistant to alkali and can be repulped in alkaline medium for recycling. The transparentized paper also exhibits antistatic properties.

Abstract: A light-polarizing plate for display use is improved in its humid, thermal and weather durabilities by controlling moisture content of a light-polarizing film made of polyvinylalcohol prior to be laminated with protector film and also by using as protector film a hydrophobic polymer film having low water vapor transmission.

Abstract: An alkali-proofed cast aluminum product having a wear-resistant surface layer thereon comprising a number of wear-resistant granules with partially projected form inserted into the surface of a base material containing aluminum as a main component, cavities open to the surface of said base material being filled with a first alkali-resistant impregnating material, and the whole surfaces of the base material including the wear-resistant granules being covered with a coating of a second alkali-resistant material is excellent in alkali resistance and prevents the wear-resistant surface from the falling out of wear-resistant granules.

Abstract: A bearing element having an adherent score-resistant coating on its surface comprising a carbonized layer of an organic resin in which the layer is carbonized by ion implantation. The ion implantation is controlled to not only provide graphite-like and diamond-like structures in the carbonized coating but to also produce chemical bonding between carbon atoms of the resultant coating and atoms of the bearing surface.

Abstract: Prestressing elements having a two-layer plastics covering, the inner layer being moldable, storage-stable at room temperature and thermally curable, and the outer layer consisting of a radiation-cured plastics material, are excellently suitable for producing supporting structural elements, particularly concrete supporting structures and rock bracings.

Abstract: Composite materials and composite building elements have two layers:(1) a layer obtained from a vulcanizable composition based on EP(D)M and(2) a layer obtained from a vulcanizable composition based on an elastomer component consisting of 5-50% by weight of a polyoctenylene elastomer and 50-95% by weight of an elastomer, or several elastomers, selected from the group of SBR, NBR, CM and the diene elastomers.The strength of the interlayer bond attained by vulcanization welding is good to excellent.

Abstract: Modified reactive siloxanes are chemically bonded directly to the surface of a cellulosic substrate to form an oleophilic layer of siloxane on the cellulosic substrate and a conventional ink impregnates the oleophilic siloxane to effect printing thereon.

Abstract: Acrylic pressure sensitive hot melt adhesives having improved creep resistance at ambient temperatures and desirable melt viscosity at elevated application temperatures are prepared by copolymerizing suitable acrylic and methacrylic acids and alkyl esters with 10-40 percent by weight of an acrylate or methacrylate terminated vinyl aromatic monomer based macromolecular monomer. The adhesives are coated onto flexible backing material to form labels, decals, tapes, and other sheet materials.

Abstract: An element for electrophoresis comprising the following three-layer structure laminated in the order:(I) a support layer;(II) an adhesive layer comprising a polymer having at least one specifically selected repeating unit; and(III) a medium layer for electrophoresis comprising an aqueous polyacrylamide gel formed by crosslinking polymerization of an acrylamide compound and a crosslinking agent in the presence of water, and a compound containing at least one carbamoyl group (modifier).

Abstract: There is provided a heat shrinkable, high barrier laminate film which includes a hot blown, melt oriented high oxygen barrier film, of relatively high crystallinity and correspondingly relatively low ultimate elongation, laminated to a stretch oriented base film having a shrink tension substantially greater than that of said barrier film, the extent of orientation of said base film being sufficient such that its ultimate elongation is reduced so as to be commensurate with that of said barrier film. In one preferred mode, the barrier film is a layflat tubular film having its interior layflat surfaces laminated together. Representatively, the high barrier layer of the barrier film is vinylidene chloride copolymer having at least about 85% by weight vinylidene chloride content, preferably at least about 90%. Associated methods for making the laminate films are also provided.

Abstract: The stiffness and deadfold properties of laminates used to make toothpaste tubes are improved by including a layer of high density polyethylene as one of the layers of the laminate. The use of high density polyethylene obviates the need to use a layer of paper or thick foil to provide stiffness and deadfold. The laminates containing high density polyethylene also have excellent strength and other properties which make them especially suitable for making tubes used to package toothpaste or other substances.

Abstract: A method for using alkanolamine-carboxylic acid salts as a coating for friction materials which during use contact, at least part of the time, rustable metals. The method comprises contacting the friction material with an aqueous solution comprising at least about 0.05 weight alkanolamine-carboxylic acid salts being the reaction product of:(i) alkanolamine; and(ii) C.sub.4 -C.sub.20 carboxylic acid;and thereafter evaporating water from the aqueous coating on the friction material so as to leave the friction material with a coating comprising alkanolamine-carboxylic acid salts. Friction materials coated by above method are also claimed.

Abstract: In a polyvinyl butyral (PVB) sheet plasticized with a multiester of an alcohol having 2 to 4 hydroxyl groups and a C.sub.16 to C.sub.20 unsaturated fatty acid having a hydroxyl group attached to the acid molecule, which sheet does not craze polycarbonate or polyacrylate when in contact therewith, the addition of a synergistically effective amount of a monoester of a glycol and such C.sub.16 to C.sub.20 acid improves the low temperature penetration resistance and adhesion properties of such sheet without significant loss in its resistance to stress cracking polycarbonate or polyacrylate in a laminated glass assembly.

Abstract: A support material comprised of a substrate and a coating bound to the substrate made up of a polymer containing succinimide units or derivatives thereof. A method for preparing a support material comprising reacting a polymer containing succinimide units with surface amine groups on a substrate.