Abstract: Airtight and puncture-resistant multilayer elastomer laminate that can be used in particular in an inflatable article, such as a pneumatic tire for a vehicle, comprising at least the following three layers (phr signifying parts by weight per hundred parts of rubber (elastomer) in each composition considered): as an airtight first layer, a first elastomer composition comprising at least 50 phr of a diene elastomer; as a puncture-resistant second layer, a self-sealing second elastomer composition comprising at least 50 phr of a saturated thermoplastic styrene elastomer and more than 200 phr of an extender oil; as an adhesive third layer or interphase between the above two layers, a third composition comprising at least 30 phr of an unsaturated thermoplastic styrene elastomer.

Abstract: Ballistic resistant articles having excellent resistance to deterioration due to liquid exposure. More particularly, ballistic resistant fibrous composites and articles that retain their superior ballistic resistance performance after exposure to liquids such as sea water and organic solvents, such as gasoline and other petroleum-based products.

Abstract: A self-repairing inflatable article including an inflatable component that includes an interior surface and an exterior surface, a sealed flexible package adjacent to the inflatable component, and a sealant composition disposed in the sealed flexible package. The sealed flexible package is configured to release the sealant composition upon puncture, tearing or other breach of the inflatable component.

Abstract: A tire with a built-in self-sealing layer includes an external rubber tread, a carcass reinforcer, a gastight layer arranged towards an inside location relative to the carcass reinforcer, an anti-tack layer arranged furthest towards the inside, location and a self-sealing layer adjacent to the anti-tack layer and arranged towards the inside location relative to the gastight layer. The anti-tack layer includes particles with a shape factor (F=L/E) higher than 5. L represents a first dimension, and E represents a second dimension normal to the first dimension, with L being a longer dimension than E.

Abstract: A self-repairing inflatable article including an inflatable component that includes an interior surface and an exterior surface, a sealed flexible package adjacent to the inflatable component, and a sealant composition disposed in the sealed flexible package. The sealed flexible package is configured to release the sealant composition upon puncture, tearing or other breach of the inflatable component.

Abstract: According to a first aspect of the present invention, a process for production of a water-absorbing article including a substrate and a coating film formed on the substrate and formed of a water-absorbing urethane resin is characterized in that: the process comprises an application step of applying a coating liquid to the substrate; the application step includes a step of supplying the coating liquid from a nozzle disposed above the substrate to a surface of the substrate conveyed horizontally; the coating liquid includes a solid matter and a solvent; the solid matter includes a mixture of a polyisocyanate, a polyol having ethylene oxide and a hydrophobic polyol; a concentration of the solid matter in the coating liquid is adjusted within a range from 5 to 30% in mass; and a viscosity of the coating liquid is adjusted within a range from 1 to 3 mPa·s.

Abstract: An inflatable article such as a pneumatic tire provided with a puncture-resistant layer comprising, by way of a self-sealing composition, an elastomer composition comprising at least, as predominant elastomer, a thermoplastic styrene (TPS) elastomer, more than 200 phr of an extender oil and more than 20 phr of a hydrocarbon resin, the glass transition temperature of which is greater than 0° C. The puncture-resistant layer is advantageously combined with an airtight layer, for example based on butyl rubber, so as to form, in the pneumatic article, an airtight puncture-resistant laminate.

Abstract: A composite armor including a ballistic armor layer and a directly attached polyurea layer. The polyurea layer is the cured reaction product of an isocyanate curing agent and a mixture of diamines having the general formula: H2N-Ph-(C?O)—O—(CH2—CH2—CH2—CH2—O)n—(C?O)-Ph-NH2, wherein in the mixture n in the ranges from 3 to 14 and the weight average value of n is about 9 to 10. Ph represents phenyl. In a preferred embodiment, the polyurea layer is the strike face. The composite armor is useful for light armor applications in which weight is a factor such as military vehicle armor and military boat armor.

Abstract: The compositions, articles and methods described herein remain intact for sealing between and around structures that contact salt water. The compositions include: (i) a partially cross-linked polyacrylamide/partially neutralized polyacrylic acid copolymer; (ii) a smectite clay; (iii) an elastomer, e.g., butyl rubber; (iv) a polyolefin polymer or copolymer; and (v) a cationic flocculant, the compositions have exceptional and unexpected free swell and cohesiveness when in contact with high conductivity water or multivalent ion-containing-contaminated water. The articles of manufacture described herein all include a combination of (i) a partially cross-linked acrylamide/acrylate/acrylic acid copolymer; (ii) a smectite clay; (iii) an elastomer, e.g.

Abstract: A method, and a self-sealing, layer-effect, stealth-reaction liner, for sealing against fuel leakage from the wound-punctured wall of an FT synthetic liquid fuel container. The liner includes (a) an elastomeric body defined by spaced, opposite faces, formed of a material which is non-reactive to FT fuel, and (b) nominally shrouded in a region within the liner body, inwardly of the faces, a distribution of liquid-imbiber beads which react to contact with FT fuel to initiate liquid-imbibing and material-swelling actions. The method includes (a) preparing, for installation in such a container, a liner with a non-fuel-reactive, substantially continuous-material elastomeric body having opposite faces, and (b) within that body, a non-facially exposed, normally body-shrouded, central distribution of fuel-reactive liquid-imbiber beads.

Abstract: A head-pressure-variant, self-healing, anti-liquid-leak coating for the outside of an upright wall in a liquid container. This coating possesses a thickness which varies from smaller toward larger advancing downwardly along a coated container wall. Preferred embodiments of the coating include: (a) one whose overall thickness varies in a linear way; (b) another whose thickness varies in a staged/stepped manner; and (c) a third whose thickness varies in a smooth, non-linear way. In all embodiments, the coating includes plural layers having interlayer-thickness relationships which are the same throughout the coating.

Abstract: A typical inventive embodiment describes a tubular shape and comprises a rigid outer layer, an elastomeric middle layer and a rigid inner layer. The elastomeric material is a strain-rate-sensitive polymer (e.g., polyurethane or polyurea) having a Young's modulus of approximately 700-1000 psi at 100% strain, and strong strain-rate-sensitivity in approximately the 103/second-106/second range. By the time that the projectile reaches the rigid inner layer, a projectile that impacts the three-layer system (commencing at the rigid outer layer) is structurally and kinetically diminished in its destructiveness by the rigid outer layer together with the elastomeric middle layer. Furthermore, the elastomeric middle layer becomes more rigid during a brief period in which it absorbs energy from the projectile, then again becomes elastic in a manner formative of a membrane covering the rigid inner layer. The elastomeric membrane tempers leakage if rupturing of the rigid inner layer has occurred.

Abstract: A bulk, generally elastomeric and pliable, layered mat formed to permit selective trimming into size-chosen mat trims/tiles, each of which is structured to perform as a self-puncture(wound)-sealing, defined-liquid-reactive, anti-puncture-leakage coating element applicable bondedly to the outside surface of a selected wall in a container holding the defined-liquid. The mat is made by preparing it as a generally elastomeric, pliable, layered arrangement of coatings formed of self-puncture-healing, defined-liquid-reactive, anti-puncture-leakage material, or materials; and is applied for use in relation to a selected container wall by (1) trimming, from the prepared mat, one or more trims/tiles shaped for specific use on the outside surface of that wall; and (2) applying and surface-bonding the one or more trims/tiles to the outside surface of the selected wall.

Abstract: Ballistic resistant fabric laminates are provided. More particularly, reinforced, delamination resistant, ballistic resistant composites are provided. The delamination resistant, ballistic resistant materials and articles may be reinforced by various techniques, including stitching one or more ballistic resistant panels with a high strength thread, melting the edges of a ballistic resistant panel to reinforce areas that may have been frayed during standard trimming procedures, wrapping one or more panels with one or more woven or non-woven fibrous wraps, and combinations of these techniques. The delamination resistant, ballistic resistant panels may further include at least one rigid plate attached thereto for improving ballistic resistance performance.

Abstract: Flexible ballistic resistant composite material that has improved resistance to pick-up of water and other liquids, the composite material comprising a plurality of non-woven fibrous layers. The fibrous layers are formed from a network of high tenacity fibers (aramid fibers, extended chain polyethylene fibers and/or rigid rod fibers). The fibers are embedded in a matrix of a thermoplastic polyurethane resin. Preferably, at least two adjacent fiber layers are oriented in a cross-ply arrangement with respect to each other. Flexible armor, such as body vests, are provided which are formed at least in part from the flexible composite material.

Abstract: Fabric laminates having superior resistance to penetration of fragments, such as shrapnel. The fabrics are formed of high-strength fibers consolidated with from about 7% to about 15% by weight of an elastomeric matrix composition, and in combination with protective layers of a polymer film on each surface of the fabric. The fabrics achieve a significant improvement in fragment resistance compared to fabrics of the prior art, while also maintaining excellent ballistic resistant properties.

Abstract: Flexible composites which are ballistic and stab resistant. The composites are formed from at least one, and preferably a plurality of, fibrous layer comprising a network of high tenacity fibers. A stack of a plurality of fibrous layers is consolidated in a desired pattern over a substantial portion of its surface area which results in areas which are consolidated and areas that are unconsolidated. The unconsolidated areas provide flexibility to the overall composite structure and the structure is resistant to ballistic projectiles and/or sharp objects. Body armor formed from the composites is comfortable to wear and reduces the degree of trauma to the wearer as a result of impact by the ballistic projectile or sharp object.

Abstract: Barrier structure placeable as a projectile-disabling, anti-liquid-leakage protective shield for the outside surface of a container designed to hold liquid of a certain nature including (a) a first-type (innermost) layer formed as an expanse of high-elastomeric material which is substantially fully self-healing via elastomeric behavior with regard to a piercing projectile wound, (b) a second-type (intermediate) layer disposed adjacent one side of the first-type layer as an expanse including a body of substantially the same high-elastomeric material in which there is contained a distribution of liquid-imbiber beads which react, and expand three-dimensionally in relation, to contact with liquid of the mentioned certain nature, and (c) a third-type (outermost) layer disposed adjacent the second-type layer, and formed as an expanse of substantially the same high-elastomeric material employed in the first- and second-type layers.

Abstract: Ballistic resistant fabric laminates are provided. More particularly, reinforced, delamination resistant, ballistic resistant composites are provided. The delamination resistant, ballistic resistant materials and articles may be reinforced by various techniques, including stitching one or more ballistic resistant panels with a high strength thread, melting the edges of a ballistic resistant panel to reinforce areas that may have been frayed during standard trimming procedures, wrapping one or more panels with one or more woven or non-woven fibrous wraps, and combinations of these techniques. The delamination resistant, ballistic resistant panels may further include at least one rigid plate attached thereto for improving ballistic resistance performance.

Abstract: Flexible composites which are ballistic and stab resistant. The composites are formed from at least one, and preferably a plurality of, fibrous layer comprising a network of high tenacity fibers. A stack of a plurality of fibrous layers is consolidated in a desired pattern over a substantial portion of its surface area which results in areas which are consolidated and areas that are unconsolidated. The unconsolidated areas provide flexibility to the overall composite structure and the structure is resistant to ballistic projectiles and/or sharp objects. Body armor formed from the composites is comfortable to wear and reduces the degree of trauma to the wearer as a result of impact by the ballistic projectile or sharp object.

Abstract: Barrier structure placeable as an anti-fuel-leak coating on the outside surface of a liquid container. This coating includes a first-type layer structure formed of a high-elongation-capable elastomer which also is capable of imbibing container leakage liquid, and of swelling in the process, and a second-type layer structure disposed adjacent one side of the first-type layer structure, composite in nature, and possessing bead-like components entrained in the same elastomer employed in first-type layer structure, with these entrained components structured also to be imbibers of leakage container liquid, and to expand on imbibing such liquid. Also disclosed is methodology which involves applying to the outside surface of such a container a coating possessing cooperative, penetration-sealing characteristics including (a) elastic elongatability before breakage within a range of about 300–400%, and (b) leakage-liquid-contact swelling, accompanied by leakage-liquid/coating contact-triggered coagulation.

Abstract: Parts inexpensively coated that yet are difficult to mar. The reel body 1 of a double bearing reel is given as an example of a part superficially coated in accordance with the invention. It includes a metallic base portion 10, an oxide film layer 11, a substrate paint film layer 12, and a finishing paint film layer 13. The finishing paint film layer 13 is formed by the application of a self-mending paint material. Forming the paint film layer on the surface of the reel body 1 by applying a self-mending paint material by the self-mending function of the paint material thus restores scratched portions if the surface is damaged due to scratching or the like. Therefore, scratches due to injuries tend not to remain on the coated part and as a result, scratches are unlikely to damage the surface of the body of the part. Moreover, forming the layer by applying a paint material facilitates low cost production.

Abstract: At least one-sidedly self-adhesively treated backing material which is coated partially with a self-adhesive composition and which under a tensile load of 10 N/cm has an extension of greater than 10% so that the backing material following application can be detached from the substrate by pulling in the direction of the bond plane.

Abstract: A multilevel phase change optical recording medium comprises first to N-th (N≧2) phase change optical recording layers, wherein an i-th recording layer and a j-th recording layer, which are two recording layers arbitrarily selected from the first to N-th recording layers, meet the conditions of Ti>Tmi and &tgr;wi<&tgr;xi, and Tj<Tmj or &tgr;wj>&tgr;xj, with respect to a particular recording laser beam selected from recording laser beams having different power levels, where T is the maximum temperature of the recording layer in a recording operation, Tm is the melting point of the recording layer, Tx is the crystallizing temperature of the recording layer, &tgr;w is a time required for the recording layer to be cooled down from Tm to Tx after the laser beam irradiation, and &tgr;x is the crystallizing time of the recording layer.

Abstract: Self-healing articles resistant to oxidizing agents and useful for surface conditioning of sheets, especially metal sheets, are described. The articles comprise a plurality of compacted, stacked non-woven web elements, the web elements each comprising entangled fibers bonded together at points of mutual contact by a bonding agent. The article is resistant to an oxidizing agent or agents, has a Shore A hardness in the range of 70 to 93 and a void volume in the range of 2 to 30 percent. The non-woven articles can be configured into any of a variety of convenient and useful shapes, such as roll shapes, slab or bar shapes. The methods of making these articles are also described.

Abstract: A fabric, which can be used more especially as a pierce-proof fabric but also as a decorative fabric, includes a plurality of interconnected scales, which have bores to connect them to one another, and into which connecting members extend. The connecting members are directly formed on the scales. Because the scales overlap one another in the manner of roof tiles (form an imbrication) and because, in order to make a flat connection, the scale itself in the fabric overlaps at least two adjacent scales and is overlapped by at least two additional adjacent scales, the fabric can also meet increased safety requirements in an advantageous manner.

Abstract: In a (Ge,Sb)-Te based optical recording medium of phase change type whose rate determining step in production has been initialization of the recording layer, the time required for production is reduced, and stable recording/reproducing properties are realized from the first overwriting operation. A phase-change type optical recording disc of write once read many-type requiring no initialization is also provided. The optical recording medium comprises a transparent substrate and a recording layer on the transparent substrate. The recording layer comprises at least one Te-based thin film and at least one reactive thin film, and the Te-based thin film is in contact with said reactive thin film. The Te-based thin film is formed from a Te-based material containing at least 95 at % of Te, and the reactive thin film is formed from a (Ge,Sb)-based material mainly comprising Ge and/or Sb. The optical change type material is formed by the mixing of the materials constituting the reactive thin film and Te.

Abstract: A mortar substrate sheet, for placement between a substrate and mortar to be coated during installation of mortar to an outer wall of a building such as a house, comprising a water-resistant/moisture-permeable sheet 12 having water-resistant and moisture permeable properties, and a water absorption/retention sheet 13 having water absorbent and water retentive properties which is layered onto the front surface of this sheet 12, having a surface which is coated with water repellent agent having water repellent properties for only a designated period of time. Additionally, the reverse side of the water resistant/moisture-permeable sheet 12 has a resin layer 14 formed by coating or film-layering resins having elasticity. During installation, the mortar substrate sheet 11 is attached to the substrate with the resin layer 14 facing toward the substrate, lath is attached, then undercoat mortar 6 is coated.

Abstract: An optical information recording medium includes a substrate, and a light absorption layer formed thereon which includes a phthalocyanine compound (I), a phthalocyanine compound (II) and a phthalocyanine compound (III) as specified in the specification. This optical information recording medium can be produced by providing the light absorption layer, directly or via an intermediate layer, on a substrate with information pits and/or guide grooves being formed on the surface thereof by film formation coating, providing a light reflection layer, directly or via an intermediate layer, on the light absorption layer by vacuum film formation, and then providing a protective layer on the light reflection layer.

Abstract: An improvement in production of an optical recording medium of phase change type is provided. In the present method, the step of repeated recording and erasing which had to be carried out after initialization and before shipment in the conventional process is eliminated. The optical recording medium produced by the present process retain good properties after repeated overwriting. In the process of the present invention, the prior art initialization step is replaced by modification treatment and the subsequent crystallization treatment. The modification treatment is a step wherein non-crystalline recording layer formed by sputtering is melted and cooled to change the crystal-lographic state into a non-crystalline state which is different from the non-crystalline state immediately after the formation of the recording layer. The crystallization treatment is a step conducted after the modification treatment wherein the recording layer in non-crystalline state is heated for crystallization.

Abstract: A light absorptive antireflector comprising a substrate, a light absorbing film formed on the substrate and a silica film formed on the light absorbing film, to reduce reflection of incident light from the silica film side, wherein the geometrical film thickness of the light absorbing film is from 5 to 25 nm, and the geometrical film thickness of the silica film is from 70 to 110 nm.

Abstract: A self-sealing target for firearm projectiles includes a body of an ionomeric polymer. A preferred polymer is a metallic salt of a copolymer of ethylene and a vinyl monomer having an acidic group.

Abstract: A backstop for firearm projectiles includes a body of an ionomeric polymer disposed so as to slow and stop projectiles. The body of ionomeric material may comprise a plurality of spaced-apart sheets.

Abstract: The present invention provides a heat-screening glass provided with a protective film having improved wear resistance and chemical resistance in comparison with a protective film of silicon dioxide. A heat-screening glass according to the present invention is composed of a transparent sheet glass and a heat-screening film coated thereon and a protective film made of silicon oxynitride as an outermost layer. The protective film is made of silicon oxynitride represented by the formula SiO.sub.x N.sub.y (where x ranges from 0.65 to 1.25 and y ranges from 0.05 to 0.67) .

Abstract: This invention relates to a fire retardant compound comprising at least one fibrous layer comprising a network of fibers such as high strength polyethylene or aramid fibers in a matrix such as a blend of a vinyl ester and a polyurethane, and a fire retardant layer comprised of a particulate fire retardant material which decompose an heating to a gaseous material such as magesium hydroxide dispersed in a matrix comprised of relatively high char yield resin such as cured phenolic cyanate resin.

Abstract: A carcass for a self-sealing pneumatic tire is constructed by starting with an extruded thin flat strip of puncture sealant both surfaces of which are detackified. The strip is place on a building drum and its upper surface is wiped clean so that an inner liner may be adhered to it. Thereafter, the carcass is conventionally completed with superimposed successive layers of belts, and tread along with bead rings, etc. The carcass is then cured in a conventional curing press so that the sealant is cured by contact with the curing bladder. The curing sealant is not restrained in any way, but does not flow. Alternatively, a laminate of the sealant is formed with the inner liner, with only the exposed surface of the sealant detackified so that it adheres neither to the building drum nor to the curing bladder. The detackifier remains on the sealant.

Abstract: The invention refers to an elastic body by synthetic material or rubber which is equipped with tube like hollow spaces in which capsules, containing a foam creating liquid, are arranged. At an explosion or other outer pressure influence the capsules will break and the liquid (foam) will fill up the hollow spaces and will get stiff to an elastic foam. The invention can be used for example manufacturing of tires.

Abstract: An integument which contributes to the maintenance of surface integrity is disclosed, particularly a sheet for use in preparing laminates, such as vehicle windshields, in which an energy absorbing ply, for example, a ply of poly(vinyl butyral), is sandwiched between two glass plies, the sheet of this invention being applied to an exposed surface of one of the glass plies and having one surface layer comprising a thermoplastic polyurethane capable of adhering to a glass or plastic substrate and the other surface layer comprising a thermoset polyurethane having antilacerative, self-healing and anti-ablative properties; there is further disclosed the manufacture and application of such a sheet as a ply facing the interior of a vehicle, thereby forming a windshield the inwardly exposed surface of which comprises a thermoset polyurethane which protects the vehicle occupants from facial lacerations caused by windshield impact and which has self-healing properties.

Abstract: This invention relates to a pneumatic tire with puncture sealing properties and a method for manufacturing such a tire. In this method of manufacturing such a self-sealing pneumatic rubber tire a polymer composition layer is built into the tire in a relatively conventional manner. Under the conditions of heat and pressure used to cure the tire this polymer composition is both crosslinked and depolymerized to form a tacky material which has puncture sealant properties (the sealant layer). Ordinary tire manufacturing techniques can be employed since the sealant layer has the physical properties of ordinary butyl rubber used in tire building at the time it is assembled into the tire.

Abstract: There is provided a tubeless pneumatic tire with an inner liner having puncture sealing characteristics comprising as the inner liner a puncture sealing laminate having an outer halobutyl polymer containing layer and an inner polymer containing layer, the inner layer of the laminate having been reacted with a zinc peroxide compound.

Abstract: An integument which contributes to the maintenance of surface integrity is disclosed, particularly a sheet for use in preparing laminates, such as vehicle windshields, in which an energy absorbing ply, for example, a ply of poly(vinyl butyral), is sandwiched between two glass plies, the sheet of this invention being applied to an exposed surface of one of the glass plies and having one surface layer comprising a thermoplastic polyurethane capable of adhering to a glass or plastic substrate and the other surface layer comprising a thermoset polyurethane having anti-lacerative, self-healing and anti-ablative properties; there is further disclosed the manufacture and application of such a sheet as a ply facing the interior of a vehicle, thereby forming a windshield the inwardly exposed surface of which comprises a thermoset polyurethane which protects the vehicle occupants from facial lacerations caused by windshield impact and which has self-healing properties.

Abstract: A waterbed mattress comprises an external envelope and is provided with an internal layer of viscous, polymeric sealing material for sealing punctures in the mattress. The polymeric material can be poly(ether)urethane, which is prevented from sticking to itself by a barrier layer of polyethylene. The mattress is formed from two sheets of polymeric material secured together where the sealing material and barrier are attached to the sheet that forms the top wall of the mattress before the sheets are secured together.

Abstract: Flexible self-sealing sheeting comprises a flexible, puncturable sheet of cloth or polymeric material, a layer of a self-adhering, water-resistant polyurethane sealing material, and an anti-tack barrier. The sheeting can be used to form a waterbed mattress, swimming pool, tent, inflatable boat, tarp, roof, and other self-sealing articles.

Abstract: A waterbed mattress comprising an external envelope is provided with an internal layer of viscous, polymeric sealing material for sealing punctures in the mattress. The polymeric material can be polybutene filled with a particulate filler. The sealing material can be sandwiched between two layers of polyethylene to form an internal liner assembly that conforms generally to the shape of the external envelope of the waterbed mattress.

Abstract: A novel tire sealant and inflator composition comprising a resin, a latex sealant, alkylene glycol, fibers, an alkanolamine, a foaming agent, and water. The composition is packaged in aerosol cans with a chlorofluorocarbon propellant/inflator and used to seal and inflate punctured tires. The composition is applied to the punctured tire through the valve stem, and acts to seal the puncture and inflate the tire sufficiently to support the weight of the car.

Abstract: A method of making an elastomeric coated fabric container utilizing cured elastomeric coated fabric and adhering the edges of each layer of fabric to the other with an adhesive film and curing the adhesive film under heat and pressure to form said container.

Abstract: A pneumatic tire having a pocket filled with lubricant attached to the inner sidewall of the tire having a puncture sealant surrounded by an O-ring built into the inside wall of the pocket. The puncture sealant allows lubricant to be injected into the pocket by use of a syringe and eliminates the need for subsequent sealing of the pocket and leakage of lubricant from the pocket.

Abstract: An inner wall for a self-sealing fuel tank in which the inner wall is provided with a plurality of fronds bonded at one end to the wall, the fronds facing towards the inside of the tank such that on penetration of the wall of the tank by a projectile the fronds are carried by the surge of escaping fuel through the wall to become entangled in the hole and choke off escaping fuel.

Abstract: An integument which contributes to the maintenance of surface integrity is disclosed, particularly a sheet for use in preparing laminates, such as vehicle windshields, in which an energy absorbing ply, for example, a ply of poly(vinyl butyral), is sandwiched between two glass plies, the sheet of this invention being applied to an exposed surface of one of the glass plies and having one surface layer comprising a thermoplastic polyurethane capable of adhering to a glass or plastic substrate and the other surface layer comprising a thermoset polyurethane having antilacerative, self-healing and anti-ablative properties; there is further disclosed the manufacture and application of such a sheet as a ply facing the interior of a vehicle, thereby forming a windshield the inwardly exposed surface of which comprises a thermoset polyurethane which protects the vehicle occupants from facial lacerations caused by windshield impact and which has self-healing properties.

Abstract: The present invention provides an optical recording medium using an amorphous-crystalline phase-change for recording and erasing, wherein reflectivity of an optical recording medium-constituting recording film in an amorphous state is larger than that of the optical recording medium-constituting recording film in a crystalline state, or wherein absorptivity of an optical recording medium-constituting recording film in an amorphous state is smaller than that of the optical recording medium-constituting recording film in a crystalline state.