A process for preparing filaments by spinning of a mixture of polyvinyl chloride and chlorinated polyvinyl chloride.

摘要

Mixtures comprising polyvinyl chloride and at least 5% by weight of chlorinated polyvinyl chloride having a second order transition temperature of at least 100 DEG C. may be made into filaments, fibres, yarns and bristles. The chlorinated polyvinyl chloride preferably has a chlorine content of more than 66% by weight. The articles may be spun from solutions of the mixtures in solvents, e.g. tetrahydrofuran, dimethylformamide, propylene oxide, cyclohexanone and cyclopentanone, or solvent mixtures, e.g. carbon disulphide/acetone, perchlorethylene/acetone, benzene/acetone and carbon tetrachloride/benzene/acetone; or from suspensions of the mixtures of swelling agent, e.g. trichlorethylene, tetrachlorethane, chloroform, methylene chloride, acetone, benzene, toluene, methyl ethyl ketone, dioxane, ethyl acetate, ethylbenzene, methyltetrahydrofuran and xylene. The fibres may be stretched and heat set.