Kaneka is a Japanese company manufacturing a synthetic polymer fibre containing flame retardants.
This type of fibre is generally referred to as a modacryllic fibre.
Due to its performance it can be mixed with other non flame retardant fibres and will pass on its flame retardancy to the overall structure.
It is most commonly mixed with cotton to produce a fabric known as Protex.
This fabric is quite light and is often used for making shirts and trousers or undergarments. It maintains a comfortable feel against skin due to its cotton content.
This fabric has been tested to EN531 and an Antistatic version is available to EN1149.
More recently the modacryllic fibre has been blended with Kermel to increase its properties against electric arc.