Abstract: Compositions comprising elastomeric polyurethane prepolymers comprising the reaction product of at least one diisocyanate selected from the group consisting of p-phenylene diisocyanate, m-phenylene diisocyanate, 1,4-cyclohexyl diisocyanate, tetramethylxylyl diisocyanate and dimethylphenyl diisocyanate and at least one polyol or polythiol characterized by the presence of two hydroxyl or thiol groups or one hydroxy and one thiol group; a monomeric diol or dithiol curing agent and vein forcing fiber are especially useful for preparing fiber-reinforced composite structures, especially for dynamic applications.

Abstract: Environmental resistance of rubber-metal bonded assemblies is significantly improved by a process comprising treating such substrates in a "low temperature" plasma comprising at least one sulfur-containing reactive monomer.

Abstract: A method for bonding unvulcanized fluorinated elastomers to vulcanized non-fluorinated elastomers comprising exposing the vulcanized elastomer to a fluorinating agent; applying a conventional fluorinate elastomer adhesive to the treated vulcanized elastomer; contacting the adhesive-coated portion of the vulcanized elastomer with the unvulcanized fluorinated elastomer; and curing in situ the fluorinated elastomer. Sulfur tetrafluoride is a preferred fluorinating agent.

Abstract: Environmental resistance of rubber-metal bonded assemblies is significantly improved by a process comprising treating such substrates in a "low temperature" plasma comprising at least one 1,2-oxirane reactive monomer.

Abstract: Adhesion and environmental resistance of rubber-metal assemblies is significantly improved by the use of metal substrates which have been nitrided at least in the bond area and subsequently exposed to a non-reactive gas, such as argon, prior to applying the adhesive.

Abstract: Adhesion of silicone elastomers to metal substrates, especially zinc phosphatized metal substrates, is significantly improved by exposing the substrate to a glow discharge plasma selected from the group consisting of at least one inert gas, at least one organosilicon compound or a combination thereof, prior to the application of any adhesive materials to such substrates.