a thermosetting plastic used in electric insulators and for making plastic ware and telephone receivers etc.
An early plastic resin, invented in 1907. It is a combination of carbolic acid and formaldehyde. See catalin. Visit about.com for more information about Leo Hendrik Baekeland.
A synthetic plastic that was used in jewelry extensively during the 1930's. It is popular with collectors today and can be imitated with polymer clay.