A material that is capable of stopping high-speed projectiles but yet is sufficiently flexible for use in various applications, such as to be used in footwear to protect a person's feet, especially the bottoms thereof is achieved by an enhanced ballistic material formed from interleaving layers of a ballistic material and layers of a gel matrix material that remains relatively soft and flexible. The ballistic material layer may be high tensile strength synthetic or polymeric fibers that are arranged in a mesh weave. Preferably the gel matrix material is capable of investing the ballistic material, e.g., by having the gel matrix material fill the interstices of the fibers, which may be achieved through the use of heat and/or pressure. Furthermore, the combined material, i.e., the enhanced ballistic material, may be shaped, e.g., by molding.

Exemplary embodiments provide an erasable medium having an overcoat layer on a photochromic layer to provide a non-adhesive surface for the erasable medium when exposed to high temperatures, wherein the overcoat layer can include a latex or a mixture of a latex and a wax.

A method of insert molding comprises placing in a first mold a curable rubber composition comprising a reactive species; placing on a surface of the rubber composition a first thermoplastic material in a film or layer comprising a group reactive with the reactive species of the rubber composition; curing the rubber composition in the mold to form a first molded article of cured rubber having a first thermoplastic material layer covalently bonded through reactive of the reactive species and the group; placing the first molded article as an insert into a second mold, the cured rubber contacting an inside surface of the second mold and the thermoplastic layer facing into the second mold cavity; closing the second mold and injecting into the second mold a second thermoplastic material that to form a second molded article comprising the first molded article thermally welded and/or covalently bonded to the second thermoplastic material.

A method of insert molding comprises placing in a first mold a curable rubber composition comprising a reactive species; placing on a surface of the rubber composition a first thermoplastic material in a film or layer comprising a group reactive with the reactive species of the rubber composition; curing the rubber composition in the mold to form a first molded article of cured rubber having a first thermoplastic material layer covalently bonded through reactive of the reactive species and the group; placing the first molded article as an insert into a second mold, the cured rubber contacting an inside surface of the second mold and the thermoplastic layer facing into the second mold cavity; closing the second mold and injecting into the second mold a second thermoplastic material that to form a second molded article comprising the first molded article thermally welded and/or covalently bonded to the second thermoplastic material.

The invention provides an article comprising a first layer and a second layer, and wherein the first layer is formed from a first composition comprising an ethylene/-olefin/diene interpolymer, an isoprene rubber (synthetic), a natural rubber, a butadiene rubber, a styrene butadiene rubber, a chloroprene rubber, a nitrile rubber, a hydrogenated nitrile rubber, a chlorinated polyethylene, a chlorosulfonated polyethylene, an ethylene/propylene rubber, an ethylene/diene copolymer, a fluoro rubber, a polyurethane, a silicone rubber, or a combination thereof; and wherein the second layer is formed from a second composition comprising a butyl rubber, a halobutyl rubber, polyvinylidene chloride, a brominated polymer derived from a copolymer of isobutylene and p-methyl styrene, a nitrile rubber, a chloroprene rubber, a chlorosulfonated polyethylene, a chlorinated polyethylene, a polyurethane, a fluoro rubber, or a combination thereof.

Provided among other things is a breach or contamination indicating elastomeric article for indicating a breach or contamination by a selected chemical or group of chemicals, the article having an exterior and interior and comprising: (a) an interior elastomeric layer selected to resist permeation by the selected chemical(s), which interior layer is colored; and (b) a contiguous or dis-contiguous indicating layer comprising solid particles of hydrophobic dye effective to provide enhanced color on contacting hexane, cyclohexane, xylene, ethyl ether, butyl acetate, MIBK, methanol, acetonitrile and acetic acid; wherein the distribution of the indicating layer provides for a visually noticeable color change against the background of the colored interior elastomeric layer upon a breach or contamination event by a selected chemical.

Provided is a retreaded tire that uses cushion rubber for retread that is able to further improve the prevention of separation failure while effectively suppressing blowout within the cushion rubber layer. The retreaded tire includes cushion rubber for retread, a base tire, and precured tread rubber formed of at least one rubber layer, and is characterized by: the aforementioned cushion rubber for retreaded tires being formed from a rubber composition containing specific quantities of a highly reinforcing carbon black of at least HAF grade, and natural rubber and/or synthetic polyisoprene rubber; the 100% modulus (A.sub.M) of the rubber layer (A) that comprises the aforementioned cushion rubber for retread being at least 3.0 MPa and less than 6.0 MPa; and the outermost layer (B) of the aforementioned base tire and the innermost layer (C) of the aforementioned precured tread rubber being formed from a rubber composition containing specific quantities of natural rubber and/or synthetic polyisoprene rubber.

Exemplary embodiments provide an erasable medium having an overcoat layer on a photochromic layer to provide a non-adhesive surface for the erasable medium when exposed to high temperatures, wherein the overcoat layer can include a latex or a mixture of a latex and a wax.

Compositions and methods for making a novel liquid gel mixture comprising at least one flexible polymer carrier, parachlorobenzotrifluoride, optional thermally-conductive materials, and optional performance-enhancing additives; using the liquid gel mixture for making surface-infused layers on layering substrates; and using combinations of surface-infused gel layer and layering substrate in cushioning foams and mattresses. Layering substrates are surface-infused with a liquid gel mixture and may be compressed to increase the penetration depth of liquid gel mixture into the substrate layer surface. This compositions may be used in mattresses, mattress topper pads, pillows, bedding products, furniture upholstery, pet beds, medical cushioning foams, seat cushions and backs, automotive foam, sports cushioning, transportation cushioning, headrests, arm rests, personal protective equipment, toys, and the like.

In a pneumatic tire containing as an inner liner material a laminate of a film of a thermoplastic resin or a thermoplastic elastomer composition and a layer of a rubber composition for improving the adhesive strength between the film and the rubber composition, the rubber composition comprises 100 parts by weight of a rubber component, 0.5 to 20 parts by weight of a condensate between a compound expressed by formula (1): ##STR00001##
wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are hydrogen, a hydroxyl group or a C1 to C8 alkyl group, and formaldehyde, 0.25 to 200 parts by weight of a methylene donor, and a vulcanizing agent; and a weight ratio of the methylene donor content to the condensate content is 0.5 to 10.