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Celluloid is a material invented around 1863,[1] produced from the processing of nitrocellulose and pigments in a solution of camphor and ethyl alcohol. The material when heated (about 60°) becomes malleable and may be bent and also molded; for this is considered as the first thermoplastic resin produced.
  1. the invention is attributed to John Wesley Hyatt, but there are several predecessors (its origins date back to the work of Alexander Parker in England); also the exact date of its origin is uncertain, as usual you can see details in the Wikipedia page on celluloid.