Epoxy resin may be reacted with itself in the presence of an anionic catalyst (a Lewis base such as tertiary amines or imidazoles) or a cationic catalyst (a Lewis acid such as a boron trifluoride complex) to form a cured network. This process is known as catalytic homopolymerisation.
A gorilla's lifespan is normally between 35 and 40 years, although zoo gorillas may live for 50 years or more. Colo, a female western gorilla at the Columbus Zoo and Aquarium was the oldest known gorilla, at 60 years of age when she died on January 17, 2017.
1 The longest lived gorilla in captivity was named Jenny, and she lived to be 55 years old.  Femelle is the Milwaukee County Zooâs oldest gorilla, estimated to be age 47 (as of October 2009). There are 25 gorillas older than Femelle in North American zoos (as of October 2009).