| 摘要 |
<p>Enamine ketone and enonsulfide polymeric solids are prepared by reacting liquid or low-melting propynone terminated enamine ketone and enonsulfide prepolymers in one-step, or more preferably, in two-step processes. Properties of the resulting polymers are determined by the nature of the reactant selected and by the relative amounts of reactants employed. Where the prepolymers formed possess terminal propynone groups, the prepolymers can subsequently be cross-linked. Copolymers can also be formed by reacting the prepolymers of the invention with vinyl-type monomers to form polymers with cross-linked networks. The polymerization techniques disclosed can be employed to produce thermoplastic, thermoset, and elastomeric products, and they are especially useful in reaction injection molding processes, in adhesive systems, in composite formations, for linings, and gaskets which require chemical resistance.</p> |
