A general term for phenol resin, used for heat and electrical insulation. The Bakelite used to stop Eva-00 when it went berserk during an experiment and also in the transport of Adam, etc., is a type of thermosetting resin which has the properties of super quick-drying concrete. Since all physical motion of an object encased by this Bakelite can be brought to a halt, it is also used to prevent the further intrusion of the JSSDF into NERV HQ in episode 25' "Air". On the other hand, the Japan Strategic Self Defence Force also uses Bakelite to prevent physical contact between the Third Children (Shinji Ikari) and Eva-01.

Source: The End of Evangelion : Glossary contained within The End of Evangelion - Theatrical Program.