Terpolymers of 2,3-dichlorobutadiene-1,3, ª‡-haloacrylonitrile, and ethylenically unsaturated compounds

Abstract

Abstract A terpolymer comprises, per 100 parts by weight, 5 to 85 parts by weight of units derived from 2,3-dichlorobutadiene-1,3, 10 to 60 parts by weight of units derived from an a -haloacrylonitrile, and from 5 to 35 parts by weight of units derived from at least one monofunctional ethylenically unsaturated compound. Monofunctional is defined as giving rise to a predominately linear homopolymer. Exemplified monomers are styrene, acrylonitrile, methacrylic acid, and chloroprene, and in Example III a mixture of a -chloro- and a -bromoacrylonitrile, which are also used as the a -haloacrylonitrile. The monomers are polymerized by conventional aqueous emulsion, suspension, or organic solution methods. The polymers, when mixed with a film-forming polymer-particularly chlorinated rubber, and applied to metal sheets as a solution, form adhesives for bonding rubber to metal without the need for incorporating curing agents in the adhesive layer.

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