| 摘要 |
A composition for impregnating tyre cords in order to adhere them to alkylene-a -olefine copolymers comprises an aqueous mixture of (a) A phenol-formaldehyde resin; (b) A homopolymer of vinyl pyridine or a substituted vinyl pyridine; and (c) A copolymer of ethylene with an a -olefine or with an a -olefine and one or more diolefines. The phenol is preferably resorcinol.ALSO:Tyre cords, e.g. of rayon, are treated to increase their adhesion to ethylene-a -olefine copolymers, or ethylene-olefine-diolefine copolymers by impregnating them with an aqueous dispersion containing a phenol-formaldehyde resin, a copolymer of ethylene with an a -olefine or a copolymer of ethylene, an a -olefine and one or more diolefines, and a homo-polymer of vinyl pyridine or of a substituted vinyl pyridine. The phenol is preferably resorcinal and the ethylene copolymer is preferably an ethylene-propylene-dicyclopentadiene copolymer. |
