1. Both bis- and mono-maleimide chemicals have been studied as compound¬ing ingredients in the types of rubber specified in the contract, namely, nitrile rubbers and neoprene. Adhesion levels of both types of rubber to nylon fabric were substandard, either green or aged. Work has been discontinued on maleimide chemicals as adhesives.n2. Highly satisfactory adhesion levels of rubber to fabric have been obtained by use of a system depending on the chemistry of methylene donors and polyfunctiona1 methylene acceptors. Bonds formed with this system showed satisfactory adhesion levels both green and after extended immersion in water or a solvent mixture as specified in the contract.
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