Fibrous material
AssigneeCourtaulds Limited
InventorsPeter Borrell, Timothy J. Ollerenshaw
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Abstract
Flame-retardant fibrous material is prepared by reacting acrylonitrile polymer fibrous material with a guanidine compound of the formula ##STR1## where X and Y each represent hydrogen or an amine group, or a salt thereof, in a substantially water-free polar organic solvent in which the guanidine compound is soluble. The fiber produced incorporates both repeating diaminotriazine rings of the general formula ##STR2## dependent from the nitrile groups of the polymer chain and repeating groups of the general formula ##STR3## formed by cyclization of the polymer chain. The fibers can be rendered electrically conductive and used to form woven, non-woven or knitted fabrics.
Claims16
A process for the preparation of a flame-retardant fibrous material from a fibrous material comprising an acrylonitrile polymer, comprising reacting the acrylonitrile polymer fibrous material with a guanidine compound of the formula ##STR9## where X and Y each represent hydrogen or an amine group, or with a salt thereof, said reaction being carried out in a substantially water-free polar organic solvent in which said guanidine compound is soluble.
A flame-retardant fiber based on an acrylonitrile polymer and incorporating both repeating diaminotriazine rings of the general formula ##STR10## dependent from the nitrile groups of the polymer chain and repeating groups of the general formula ##STR11## formed by cyclisation of the polymer chain.
Dependencies are inferred from the claim text.