(under subclass 147.1) Compositions which contain, in addition to the natural resin or derivative thereof, a terpene or a chemical modification of a terpene.
(1) Note. Terpene denotes a hydrocarbon having two or more isoprene units (C5H8). Most terpenes have carbon skeleton of 10, 15, 20, or 30 atoms.
(3) Note. The term "derivative" herein is intended to include a chemical modification of the terpene wherein the terpene structure is not destroyed or wherein the terpene structure is indeterminate.