Abstract: A substantially transparent glazing article has an optically functional coating on a transparent substrate. The coating has an optically functional topcoat layer and an anti-iridescence layer between the topcoat and the substrate. The refractive index anti-iridescence layer is (i) higher than the refractive index of the substrate in a first high refractive index zone directly on the substrate surface, (ii) lower than that of the first high refractive index zone in a low refractive index zone directly on the first high refractive index zone, and (iii) higher than that of the low refractive index zone in a second high refractive index zone directly on the low refractive index zone. The refractive index of the anti-iridescence layer varies in at least one of the zones substantially continuously with distance from the substrate surface. Contiguous zones may together form a single gradient index zone.

Abstract: A laminated glazing unit having improved impact strength comprising a), b) and c) in sequence: a) a glass layer; b) a plasticized layer containing partial polyvinyl butyral; c) another glass layer; and d) means, preferably a multiplicity of spaced projections, dispersed on the surface of at least one of the foregoing layers, preferably the plasticized layer, capable of resisting adhesion to the layer with which it is in contact, the area without said dispersed means (e.g. between projections) of the layer having such dispersed means having high affinity for adhesion to the layer with which it is in contact, such laminated glazing at a specific pummel adhesion having a greater mean break height than that of a laminated glazing containing layers a) b) and c) but without d). The dispersed means may be on the surface of a glass layer but is preferably on the plasticized layer.

Abstract: Orientated semi-crystalline polyester films characterized in that they have a planar orientation coefficient .DELTA.p of greater than or equal to 165.times.10.sup.-3 and a degree of transverse shrinkage of less than or equal to 2.7% at 200.degree. C.These films are suitable as a support for obtaining composite films by extrusion-coating of an olefin polymer.

Abstract: The present invention relates to a granulated thermoplastic polymer composition comprising granules incorporating 0.1-50% (vol) fiber bundles. The fiber bundles have a three dimensional orientation in each of the granules, and each fiber bundle contains at least 100 fibers. The present invention also relates to a process for producing a granulated thermoplastic polymer composition containing non-dispersed fiber bundles comprising the steps of mixing a thermoplastic polymer with fiber bundles at a sheer stress low enough to prevent the fiber bundles from falling apart, and the forming granules. A temperature of a dosage point where the fiber bundles are added to the thermoplastic polymer is below a processing temperature of the thermoplastic polymer. Each granule comprises 0.1 to 50% (vol) of the fiber bundles. The fiber bundles have a three dimensional orientation in each granule, and each fiber bundle contains at least 100 fibers.

Abstract: The present invention relates to protection against the corrosive action of hydrofluoric acid.According to the invention it has been found that a material consisting of an elastomeric substrate or matrix and a filler of metal particles dispersed in the substrate, of a metal which can be oxidized by ionized hydrofluoric acid, can limit or prevent the diffusion of hydrofluoric acid.The materials according to the invention can be employed in all the suitable forms, especially as sheets, for protecting metal walls.

Abstract: A semi-conductive, static-dissipative polymeric composite comprising an insulative polymeric resin, and from about 5 to about 60 volume percent of a particulate filler having thin-film, inorganic coatings of semi-conducting material, such composites having volume resistivities of from about 1.times.10.sup.4 --to about 1.times.10.sup.14 ohm-cm. In preferred semi-conductive, static-dissipative polymeric composites, the particulate filler has a thin-film coating of a semi-conducting material selected from the group consisting of transition metal oxides, carbides and nitrides.

Abstract: Improved non-stick coating systems can be applied to untreated smooth substrate with a primer of polytetrafluoroethylene and a perfluorinated copolymer of tetrafluoroethylene and hexafluoropropylene to give a concentration gradient.

Abstract: Silica particles having an average particle size of 5 to 100 .mu.m, a BET specific surface area of not more than 20 m.sup.2 /g and a pore volume of not more than 0.1 ml/g, each of which has on its surface a plurality of protuberances with a smooth configuration , a diameter at half the protuberance height of the said protuberance being 0.2 to 5.0 .mu.m and a height of the said protuberance being 0.2 to 4.0 .mu.m, and a process for producing the silica particles, which comprises (A) reacting hydrosilicofluoric acid, ammonium silicofluoride or a mixture thereof with ammonia in an aqueous medium to form a silica slurry, (B) separating a silica from the silica slurry, and (C) calcining, after optionally drying, the separated silica at a temperature of not less than 500.degree. C.

Abstract: A sintered fluorocarbon resin based composite friction material having a high coefficient of friction, greater hardness, good machineability and improved wear resistance. The composite material comprises a homogeneous blend of fluorocarbon resin, aramid and carbon fibers, aluminum oxide and polyester compound. Also provided are process steps required to produce such materials with the desired characteristics of homogeneity, hardness and wear resistance. These steps include a premix together of the fiber components and final sintering at a pressure of about 1600 psi.

Abstract: A process for the manufacture of core/shell polymer particles comprises forming a core particle containing acid functionality, a first shell around said core of a copolymer of a nonionic monoethylenically unsaturated aromatic monomer and a copolymerisable polar monomer in an amount of at least 15% by weight of the copolymer and having a solubility in water at 20.degree. C. of at least 1% by weight and a second shell around said first shell of a polymer or copolymer of a nonionic monomer having a solubility in water at 20.degree. C. of less than 1% by weight and swelling the particle with a non-volatile alkali to generate one or more vesicles.Preferably each shell contains a polymer or copolymer of styrene.

Abstract: A method is described for making hollow aerogel microspheres of 800-1200 .mu. diameter and 100-300 .mu. wall thickness by forming hollow alcogel microspheres during the sol/gel process in a catalytic atmosphere and capturing them on a foam surface containing catalyst. Supercritical drying of the formed hollow alcogel microspheres yields hollow aerogel microspheres which are suitable for ICF targets.

Abstract: A composite material for enhancing traction between a surface of an article made of the material and a second contact surface is disclosed. Fine chips are encapsulated in covering material to form covered particles. The covered particles are evenly dispersed within a base material. The covering material is harder than the base material; the second contact surface material is harder than the covering material; and the fine chips are made from a material that is harder than the second contact surface material. As the surface of the article made of the material and the second contact surface interact, the fine chips are continuously exposed to the second contact surface. As a result, the fine chips are free to engage small indentations in the second contact surface and to bite into ice on the second contact surface, if any ice is present.

Abstract: The invention relates to a strip or portion of a strip for deep drawing or drawing and ironing comprising a metallic layer carrying on one surface a surface coating of plastics material and on its other surface a coat of varnish characterized in that: the metallic layer is of aluminum alloy with each surface having a coating of anodic or chemical conversion oxide 20 to 80 nm thick; and the coat of varnish contains a solid lubricant consisting of particles which are harder than the varnish and less hard than the shaping tool or tools, which particles are of an average diameter greater than the thickness of the said coat after firing. The invention also has an object the use of this strip to produce various hollow bodies or containers, particularly with a height:diameter ratio in excess of 2.5 and for producing aerosol or pump distributors.

Abstract: The present invention provides a plastic packaging for fresh fruit, vegetables and cut flowers. The film comprises 1 to 10% Activated Earth incorporated in polyethylene. The Activated Earth modifies the gas permeabilities of the film so that it interacts with the metabolic activity of the fresh produce modifying the atmosphere around it. It does this by modifying the permeability of the film to the various atmospheric gases. The Activated Earth is characterized by its predominantly porous aluminium/silicate composition, a pore diameter of 50,000 Angstroms, a specific surface of 0.6 m.sup.2 /gm and a specific gravity of 2.3.

Abstract: An erasable system including an element having a porous marking surface and an erasable marking composition for applying markings to the porous marking surface. The marking composition comprises an aqueous dispersion of particles of film-forming polymeric materials and a colorant, and the marking composition provides an erasable, substantially water-insoluble coalesced residue on the marking surface.

Abstract: An extrudable bonding resin composition of (a) 65 to 99 percent of an ethylene copolymer portion of a copolymer of ethylene and 20 to 50 percent comonomer of acids, esters, and the like, and grafted sidechains of comonomer units selected from carboxylic acid, anhydride, salt, or half ester functionality, and optionally a compatible non-grafted ethylene copolymer, and (b) 1 to 35 percent by weight of a tackifying resin exhibits good adhesion properties without the need for a primer.

Abstract: Granular compositions which comprise a block copolymer containing blocks of rigid rod polybenzazole polymer and blocks of thermoplastic polybenzazole polymer can be compression molded to provide a molded article having physical properties superior to molded articles made from the thermoplastic polymer alone.

Abstract: The present invention provides surfacing films for the production of articles having uniform, high quality decorative features. The surfacing films have a thermoformable carrier layer that provides enhanced protection of the decorative features of the film during fabrication of the article. The carrier layer may be further utilized to impart a desired finish on the surfacing film during post-forming.

Abstract: A protective and decorative polymeric sheet material for bonding to substrates by thermoforming comprises a flexible carrier film, a paint layer on one surface of the carrier film containing a colorant or light reflective flakes or both; and a transparent topcoat overlying the paint layer. At least a portion of the transparent topcoat is a rubbery cushioning layer formed of a non-crosslinked, or lightly crosslinked polymeric composition of low Tg.The sheet material has an unextended state and is heat softenable to a plastic state in which it is extendable to an extended state at least 50% greater in area than the unextended state. The paint and topcoat layers have substantially uniform quality and appearance in both the unextended and extended states. In a preferred embodiment, the thickness of the transparent topcoat is at least 0.1 millimeter. The thick topcoat provides improved retention of gloss and distinctness of image when the sheet material is stretched.

Abstract: A red pigment coated phosphor comprises a phosphor for color cathode ray tube and red pigment attached to said phosphor by an organic binder, wherein said organic binder is gellatin and casein. A process for preparation of a red pigment coated phosphor comprises the steps of: preparing three dispersions of red phosphor particles, red pigment particles and organic binder, respectively; uniformly mixing said three dispersions and agitating them sufficiently; adjusting pH of the mixture obtained; and adding a curing agent thereto, washing said mixture and then drying it. The red pigment coated phosphor of the present invention has a good dispersion and a good affinity for phosphor slurry.