PROCESS FOR PRODUCING MODIFIED PHENOLIC FIBERS

摘要

A process for producing phenolic filaments having improved heat resistance which comprises melt-spinning a fiber-forming phenolic resin and curing the resulting filaments, wherein at least one compound containing at least one group selected from the group consisting of active hydrogen-containing amino, amide, thioamide, ureylene and thioureylene groups and derivatives of these groups is applied to said phenolic resin filament before, during or after the curing treatment.