Resin
Resin means any thermosetting resin with or without pigment containing styrene (CAS No. 100425) or methyl methacrylate (CAS No. 80626) and used to encapsulate and bind together reinforcement fibers in the construction of fiberglass parts.
Source
40 CFR § 63.5779
Scoping language
Terms used in this subpart are defined in the Clean Air Act, in 63.2, and in this section as follows: