Abstract:
The invention relates to process for preparing a flame resistant and/or flame retardant polymer, comprising reacting an acrylonitrile polymer with an organic diamine.
Abstract:
The invention relates to a polymeric fibre derived from a copolymer of polyacrylonitrile and a comonomer. The fibre comprises a metal ion and/or silicon at from about 1 to about 15 wt%. A process for making the fibre is also described.