Reactive adhesive means adhesive systems composed, in part, of volatile monomers that react during the adhesive curing reaction, and, as a result, do not evolve from the film during use. These volatile components instead become integral parts of the adhesive through chemical reaction. At least 70 percent of the liquid components of the system, excluding water, react during the process.
40 CFR § 63.3981
Terms used in this subpart are defined in the CAA, in 40 CFR 63.2, and in this section as follows: