Abstract: A pressure-sensitive adhesive is disclosed which is prepared by hot melt blending paving grade asphalt, a depolymerized virgin rubber, a terpene resin, and a vulcanizable, non-depolymerized styrene-butadiene copolymer. These adhesives are especially useful in forming membranes by coating one side of an asphaltic based coated reinforcement with these adhesives. They are useful for highway repair and maintenance purposes and for waterproofing and show good adhesion to cementitious, for example asphaltic concrete or Portland cement concrete, substrates.

Abstract: Rubber compositions and metal-reinforced rubber ply members have improved metal adhesion and metal adhesion retention. The improvement comprises admixing from about 0.5 to about 10.0 parts per hundred rubber (phr) of bis(2-mercaptobenzothiazato) nickel with a vulcanizable rubber composition prior to combining the metal and rubber and then curing. A method for improving the metal adhesion and metal adhesion retention between a vulcanizable rubber and metal member includes the step of dispersing from about 0.5 to about 10.0 phr of nickel in a vulcanizable rubber composition prior to curing.

Abstract: Adhesion activation of aramid filaments is accomplished by subcoating with a reaction product of an epoxide resin and an aldehyde resin.

Abstract: Multi-layer containers comprising an exterior layer of foamed or unfoamed polystyrene or poly(para-methylstyrene) which is not resistant to hot fat under microwave cooking conditions and an interior layer of 5 mils or less of an impact copolymer of at least 5 weight percent rubber and styrene or para-methylstyrene which serves as a heat and grease resistant layer rendering the container suitable for microwave cooking of fatty foods.

Abstract: A V-belt construction wherein a belt body defining an inner compression rubber portion and an outer compression rubber portion with tensile cords extending longitudinally therethrough is provided with a plurality of transversely extending reinforcing staple fibers distributed in the outer compression rubber portion such that the tensile cords are embedded within the distribution of the staple fibers. V-belts of the invention are provided both in raw edge and fabric-covered form. The rubber in which the tensile cords are embedded preferably has a hardness in the range of approximately 70.degree. to 90.degree.. Different distributions of the transverse staple fibers are disclosed.

Abstract: A method for treating non-woven fabrics or fibers used in the manufacture of automobile tires and accessories, and the products produced by such method. In order to improve the adhesion qualities of fabrics used in the manufacture of pneumatic tires, particularly chafer strip and bead wrap constructions, to thereby reduce or eliminate the splitting and deterioration tendency of such products under high stress conditions, by impregnating the non-woven fabric with at least an equal amount of elastomer by fabric weight.

Abstract: A reconstituted leather product and a method of manufacturing this reconstituted leather product is disclosed in which leather (preferably scrap leather) is ground or shredded into a fibrous state. The fibrous leather is mixed with a binder, such as natural rubber dissolved in an evaporatable solvent (e.g., naphtha), so as to form a paste-like mix. The mix is then extruded (or otherwise formed) into sheets or webs and is cured so as to drive off excess solvent. A reinforcing mesh web may be adhered to the back face of the sheet or may be sandwiched between layers of the fibrous leather and binder. The cured reconstituted leather may be finished to have any desired surface finish or color in a manner similar to real leather. The resulting reconstituted leather closely resembles real leather in feel, color, finish, odor, strength, flexibility, and appearance, but is of much lower cost.

Abstract: Multi-layered containers are disclosed including an inner layer of a thermoplastic fluorocarbon resin, an outer layer of polyolefin, and an intermediate layer therebetween of a mixture of either polyolefin grafted with an unsaturated glycidyl compound or an ethylene copolymer grafted with an unsaturated glycidyl compound. The containers possess unexpectedly improved properties, including moldability and interlaminar strength, and are excellent candidates for containing agricultural chemicals, fuel oil and industrial chemicals of various types.

Abstract: The covering has a lower or cushioning layer (1) and an upper or wear-resisting coating (2), between which there is a reinforcing iron netting (3). Both the layers contain rubber chips (4), which are produced from old vehicle tires. The lower layer used for cushioning impact effects on the covering, is additionally provided with spherical expanded clay (5), which gives said layer a particular elasticity and also makes it independent of atmospheric humidity during production.

Abstract: An elastomer coated bias fabric for reinforcing power transmission belts and the like is disclosed wherein one surface of the fabric is provided with an uncured, tacky, elastomeric composition. The fabric is prepared by pre-impregnating the fabric, transversely stretching the fabric on a tenter frame, coating a latex composition on both surfaces of the fabric while maintaining the fabric in its transversely stretched condition, and after drying the fabric, overcoating one surface only of the coated fabric with a tackified, latex composition which may contain a chemical linking agent which enhances the bond between the elastomer and the fabric by forming a chemical bridge between them. A method for manufacturing coated fabric is also disclosed.

Abstract: The repair of a reinforced elastomer article having a hollow therein relates to utilizing an amine curable polymer or prepolymer and a cured elastomer patch. The hollow in the elastomer as well as the areas juxtaposition to the patch is coated with a treating agent. The amine curable polymer or prepolymer is then applied to the hollow as well as to the area between the patch and the elastomer and cured at ambient temperature. One area of use is in the repair of tires.

Abstract: The repair of a reinforced elastomer article having a deformity such as a cut, cavity, or an aperture therein relates to utilizing an amine curable polymer or prepolymer and a cured elastomer patch. The deformity in the elastomer as well as the areas juxtaposition to the patch are coated with a treating agent. The amine curable polymer or prepolymer applied to the patch area has no rubber filler therein and is cured at ambient temperature. The amine curable polymer or prepolymer applied to the cut, cavity or to the aperture does have a rubber filler therein and is also cured at ambient temperature. One area of use is in the repair of tires.

Abstract: Coating composition for protecting bodies immersed in sea water, comprising(a): a sub-layer of chlorinated natural rubber, and(b): an external layer comprising a polymer with amide groups.An intermediate layer can be provided, said layer consisting of a modified chlorinated natural rubber.

Abstract: A pressure-sensitive adhesive is disclosed which is prepared by hot melt blending paving grade asphalt, a depolymerized virgin rubber, a terpene resin, and a vulcanizable, non-depolymerized styrene-butadiene copolymer. These adhesives are especially useful in forming membranes by coating one side of an asphaltic based coated reinforcement with these adhesives. They are useful for highway repair and maintenance purposes and for waterproofing and show good adhesion to cementitious, for example asphaltic concrete or Portland cement concrete, substrates.

Abstract: A method of preparation of valves for a flat, flexible, sterilizable container capable of sterilely containing a liquid to be removed under absolutely sterile conditions which comprises the steps of:forming a two-layer laminate including a first layer of a copolymer of ethylene with a minor proportion of butylene and a second layer of an amide polymer; forming a pocket in the two-layer laminate wherein the first layer forms the inner surface of the pocket; providing an elastomeric core element having spaced major faces; inserting the core element into the pocket in the two-layer laminate; providing a three-layer laminate including a first outer layer of a major portion of a propylene polymer, a second outer layer of a copolymer of ethylene with a minor proportion of butylene, and an intermediate layer of an amide polymer; orienting the three-layer laminate so that the second outer layer thereof is apposed to the first layer of the two-layer laminate; expelling air surrounding the core element in the pocket; w

Abstract: In repairing articles of natural rubber or elastomer predominantly of natural rubber with cured polymer or prepolymer (polyurethane/polyurea), adhering advantages are obtained especially at elevated temperatures when the damaged area is treated with halogen-containing oxidant dissolved in 1,2-dichloroethane instead of other solvents.

Abstract: A latex is prepared by polymerizing (a) an addition polymerizable oxazoline (such as 2-isopropenyl-2-oxazoline) and (b) at least one other monomer (such as a mixture of styrene and butadiene). The latexes of this invention are useful for promoting adhesion between a polymeric elastomer and a substrate, especially for promoting adhesion between tire cords and tire rubber.

Abstract: A shaped article of a polymeric material has a shaped structure containing at least one polymeric component which is weldable, e.g. by heat, and at least one polymeric component which can be crosslinked by high-energy radiation. The crosslinkable polymeric component is homogeneously distributed within the shaped structure and is crosslinked at least partially in a part of the shaped structure, including at least a portion of the shaped structure.

Abstract: A wear-resistant rubber product adapted to be used as, for example, a lifter in grinding mills, comprises at least two prefabricated parts (11, 12) interconnected with one another by means of a binder layer having a thickness of at least 2 mm and consisting of in situ cast and cured polyurethane. The wear-resistant rubber product is manufactured by placing the prefabricated cured rubber parts (11, 12) at a distance of at least 2 mm from one another and by introducing, preferably injecting a reacting urethane rubber composition with excess isocyanate groups into the gap (13) to cause said prefabricated parts on either side of said gap to be contacted subtantially simultaneously by the said urethane rubber composition.

Abstract: A magnetic recording medium which comprises on a support base having coated thereon a magnetic layer containing a binder and a ferromagnetic fine powder dispersed in the binder is disclosed. The binder is comprised of a cellulose derivative having a residual OH group in a proportion of 7.5 to 40%, a diolefin or olefin series synthetic rubber and a polyisocyanate compound. The medium has excellent video sensitivity and video signal to noise ratio. The medium of the invention also have improved abrasion resistance.

Abstract: A heat-moldable laminate comprising at least one thermoplastic resin layer, at least one fiber reinforced cured thermosetting resin layer, and at least one slippage layer interposed therebetween and bonding the resin layers, said slippage layer comprising a thermoplastic resin and said slippage layer being capable of being molten at lower temperatures than the moldable temperature of the thermoplastic resin layer, and a process for molding the heat-moldable laminate to produce a molded article having excellent strength and rigidity is disclosed.

Abstract: A coated bonding tape having improved peel strength combined with low temperature flexibility is disclosed in which a layer of impact-resistant material constituted by a milled layer of pigmented and plasticized elastomer is coated with a pressure-sensitive adhesive coating and in which the elastomer layer consists essentially of butyl rubbers, pigment and sufficient plasticizer for the elastomer to provide a half thickness reduction at a pressure below 800 psi. At least about 45% of the butyl rubber is cross-linked, at least about 20% of the butyl rubber is noncross-linked and has an average molecular weight of at least about 250,000, and at least about 60% of the pigment is of reinforcing character, the proportion of plasticizer providing a tape body having a strength of at least about 30 psi before plastic flow begins, and the pressure-sensitive adhesive coating is selected to provide a bond to the tape body which is strong enough to force the bonding tape to fail cohesively when peeled from a substrate.

Abstract: This invention provides a graft copolymer of at least one acrylic monomer and chlorinated natural or synthetic rubber, in which at least about 8 percent of the total weight of said graft copolymer is derived from acrylic acid, methacrylic acid, or both. It also provides aqueous dispersions of such graft copolymers and coating compositions containing them.

Abstract: A process and composition for applying and bonding an amine curable polymer or prepolymer at ambient temperatures to the surface of a cured elastomer substrate. The elastomer article or substrate is treated with an organic oxidant such as an N-halohydantoin, N-haloamide, or an N-haloimide, for example, the various isomers of mono-, di-, and tri-chloroisocyanuric acid. A polyisocyanate is applied thereto. A composition of the amine curable polymer or prepolymer is prepared with an amine curing agent. To the curing agent and curable polymer or prepolymer composition is added a polar solvent which is mixed with the resulting blend or mixture and added to the treated elastomer surface; said polymer or prepolymer cures at ambient temperature and becomes bonded to said elastomer. The application is relatively easy, since the entire mixture is a liquid and can be applied in situ.

Abstract: An image-holding member for holding electrostatic images or toner images comprising a support and an image-holding layer contains a curable rubber layer.

Abstract: Injector apparatus is disclosed which includes a sealed self-contained replaceable vessel containing an ejectable material to be injected into the well-bore during well logging operations. The vessel comprises a flexible-wall, collapsible tubular-like cartridge which can be removed from the mounting apparatus in the string of logging tools and replaced with a new cartridge. Motive force apparatus pressurizes the material in the cartridge and a valve device, which is actuated by a solenoid device, controls the flow of material exiting from the cartridge. Passageways and an orifice in the mounting apparatus directs the flow of material from the valve device to the well-bore.

Abstract: A shaped polyester composite material having an excellent bonding property to rubber, comprises a shaped substrate comprising an aromatic linear polyester matrix and 0.3 to 15%, based on the weight of the matrix, of silicon dioxide fine particles having an average size of 5 to 100 millimicrons and dispersed in at least a surface portion of the substrate, and;a surface coating layer formed on the fine particle-containing surface portion of the substrate and comprising a surface-activating material consisting of at least one member selected from silane coupling compounds and organic titanium compounds, the surface coating layer having been heat treated at a temperature of 50.degree. C. or more but at least 10.degree. C. below the melting point of the polyester matrix.

Abstract: An aqueous alkaline dispersion of a rubbery graft or over polymerized copolymer of a diene and a vinyl pyridine on a polyacrylate seed (core or substrate), said acrylate polymer having a Tg of not above about -20.degree. C., desirably also containing a polybutadiene, and a water soluble, heat reactable phenolic resin, in certain amounts is useful in forming an adhesive for bonding glass fiber reinforcing elements or cords to rubber compounds or stocks. After dipping the glass fiber cord in the one-step adhesive dip, the coated cord is heated to dry it and heat cure or heat set the adhesive on the cord. Thereafter, the adhesive containing glass fiber cord is combined or laminated (calendered) with a curable rubber compound and the resulting assembly is cured to form a composite in which the glass fiber cord is bonded to the rubber by means of said adhesive.

Abstract: The invention relates to rubber articles, particularly spray forming means and spray jet forming means respectively, and their use in sanitary fittings. These are produced by vulcanization of a rubber mixture which contains besides caoutchouc and usual vulcanization additives and auxiliary agents graphite and preferably paraffin. With this mixture any lime deposits can easily detach themself or can even be completely prevented.

Abstract: Transfer-printing supports, which are impregnated or printed with a formulation containing a mixture of a blue disperse dyestuff which sublimes readily and has the formula ##STR1## in which X is hydrogen or halogen, R, R.sup.1 and R.sup.2 denote alkyl with 1 to 4 carbon atoms and R.sup.3 denotes hydrogen or alkyl with 1 to 4 carbon atoms, and yellow to red disperse dyestuffs which sublime readily, give deep and fast black dyeings on polyester materials and polyester mixed materials by the heat transfer-printing process.

Abstract: Disclosed is a method for making articles comprised of a body portion of an elastomeric material having a liner of an inert material covering at least a portion of the peripheral surface of said body portion including the steps of bonding a layer of elastomeric material to one face of a layer of the inert material, positioning the bonded layers in a mold cavity with the layer of inert material contacting at least a portion of the surface of a mold cavity, adding additional amounts of uncured elastomeric material to the mold cavity and vulcanizing the elastomeric materials. Also disclosed herein is a system and apparatus for making molded articles as well as the molded articles produced thereby.

Abstract: Medical grade adhesive compositions comprising a homogeneous blend of one or more pressure sensitive adhesive materials and one or more natural or synthetic polymers capable of developing elastomeric properties when hydrated such as gluten and long chain polymers of methyl vinyl ether/maleic acid are disclosed. The compositions may also include one or more water soluble hydrocolloid gums and may additionally contain one or more water swellable cohesive strengthening agents.

Abstract: Composite of rubber and metal reinforcement where the rubber contains a cyanuric acid derivative and optionally a borate. Cured composite is useful as component for rubber tires, industrial belts and hose.

Abstract: The invention provides a novel water-swellable caulking material which is a composite body of stratified structure composed of at least one rubbery layer swellable in water comprising highly water absorbing resin dispersed in the matrix of a rubber and at least one rubbery layer not swellable in water integrally bonded together, which latter serves to resist the expansion of the former layer when swollen in water in the directions other than the direction perpendicular to the plane of the layers. The inventive caulking material can exhibit unexpectedly excellent water sealing effect with easiness in handling in addition to the rapidity in water absorption by virtue of the structure thereof preventing the expansion of the material in the directions of length and width without decreasing the expansion in the direction of thickness.

Abstract: The bladder has at least a portion of its outer surface comprising a fabric layer of cords partially embedded therein so that such cords project slightly above the rubber surface. The article is manufactured by calendering a fabric layer of cords on one side only with a coating of uncured and unvulcanized rubber, applying the layer to the bladder material with the rubber coated surface in contact therewith, and heating the article so formed to cure the rubber coating. The curing causes some of the rubber coating to flow between and over the outside surfaces of the cords. This excess rubber is removed by abrading the article so as to expose the cords. The abrading removes some of the cured rubber between the cords so that the cords project slightly above the surface of the rubber substrate.

Abstract: A composition comprising a radiation-curable polymer, said polymer being crosslinkable and having pendant ethylenically unsaturated peptide groups is disclosed. Such polymers are useful in the field of graphic arts.

Abstract: Polymeric coatings can be applied to substrates such as metal foils by first coating the foil with a wetting hydrosol followed by applying a coupling agent thereto and thereafter coating the substrate with the desired polymer.

Abstract: A conventional stainless steel beverage syrup container having color stabilized cured rubber molded skirts adhesively bonded to stainless steel domes weld capping said container.

Abstract: A method of preparing nitrile elastomer surfaces for bonding by epoxy adhves is presented. A treating solution comprising a dilute concentration of a mineral acid such as HCl in a carrier comprising water and either alcohol or ketones is prepared. The treating solution is applied to the elastomer surface with the surface being hydrolyzed in a mild manner thereby providing an improved adherable surface for covalent bonding by epoxy adhesives. A surfactant can be added to the treating solution for cleaning the surface to enhance the surface treatment.

Abstract: A laminated barrier comprising alternate layers of rigidized low density lular material and ballistic nylon cloth useful in an aircraft for minimizing projectile and shrapnel damage, and possible fuel ignition in the fuselage caused by groundfire in the vicinity of fuel tanks located adjacent to the engines.

Abstract: A blanket for offset printing comprises three layers, namely, a substrate, a rubber layer and an outer layer. The outer layer is formed by applying to the rubber layer an urethane type resin having aluminum powder mixed therein, and the aluminum powder produces an unevenness in the surface of the outer layer which controls the ink transferring ability of the blanket.

Abstract: A coating of organo-phosphonitrile polymer is bonded to the surface of a cured rubber article such as a catheter with a primer coating containing a cross-linked di- or poly-vinyl compound.

Abstract: A process and composition for applying and bonding a curable polymer or prepolymer, for example, an amine curable polymer or prepolymer, at ambient temperatures to the surface of a cured elastomer substrate. The elastomer article or substrate is treated with an organic oxidant such as one selected, for example, from the group consisting of N-halosulfonamides, N-halohydantoins, N-haloamides, N-haloimides, and the various isomers of mono-, di-, and trichloroisocyanuric acid. A composition of a curable polymer or prepolymer is prepared with a curing agent. To the curing agent and curable polymer or prepolymer composition is added a polar solvent which is mixed with the resulting blend or mixture and added to the treated elastomer surface; said polymer or prepolymer cures at ambient temperature and becomes bonded to said elastomer. The application is relatively easy, since the entire mixture is a liquid and can be applied in situ.

Abstract: To eliminate contamination of foreign matters deposited on the surface for a rubber stopper for tight sealing for medical purpose as for tight sealing of a medical injection liquid bottle, a vulcanized film of propylene-tetrafluoroethylene-glycidyl vinyl ether copolymer rubber is coated partially or wholly onto the surface of the rubber stopper. Vulcanization of the copolymer rubber can be carried out only by heating in the absence of a vulcanizing agent, and a vulcanized film with a good adhesiveness to the rubber stopper and a good sliding characteristic can be formed thereon.

Abstract: Rubber compositions and reinforced rubber articles are described which exhibit improved adhesion by the incorporation therein of an adhesive amount of certain N-(carboxyalkyl)maleamic acids.

Abstract: The curing or cross-linking of fluorinated alkoxy phosphonitrile polymers with organic peroxides is accelerated by the use of a trialkyl aluminum or a dialkyl aluminum hydride. The coating with such polymers of biomedical articles such as embolectomy catheters or Foley retention catheters made of natural or synthetic rubber is facilitated by using for the coating a solution of such polymers in an organic solvent together with an organic peroxide and the new accelerating catalyst.

Abstract: A rubber stopper for sealing comprises a substrate of a rubber stopper which is partially or wholly coated with a fluorine-containing elastomer comprising a graft copolymer having rubber-like elasticity and having chemical linkages of fluorine-containing polymeric segments and organopolysiloxane segments at reactive sites of said segments.

Abstract: A water-impermeable sheet material capable of preventing formation of water drops thereon, has one or two water-impermeable layers, at least one of which layers holds, on the surface thereof, a water drop-preventing agent in the form of fine solid particles and consisting of at least one hydrophilic but water-insoluble substance, at least a portion of the water drop-preventing agent being exposed to the ambient atmosphere.

Abstract: A process and composition for applying and bonding an indicia which is curable at ambient temperatures to a cured elastomer substrate. The substrate is treated generally at ambient temperatures with organic oxidants selected from the group consisting of N-halosulfonamides, N-halohydantoins, N-haloamides, N-haloimides, and the various isomers of mono-, di-, and trichloroisocyanuric acid. The indicia which is generally a urethane polymer or prepolymer is blended with an amine curing agent. A polar solvent is added to the amine curing agent and the amine curable polymer or prepolymer composition and mixed with the resulting blend or mixture applied to the treated elastomer surface in the form of an indicia so that said polymer or prepolymer cures at ambient temperature and is bonded to said elastomer. The invention is particularly suitable for applying indicia to various elastomer articles such as tires, conveyor belts, hoses, floor mats, sporting goods, and the like.

Abstract: A coating of organo-phosphonitrile polymer is bonded to the surface of a cured rubber article such as a catheter with a primer coating containing a cross-linked di- or poly-vinyl compound.