FIBRAS SINTETICAS ORGANICAS RESISTENTES AO CALOR E PROCESSO PARA A SUA PRODUCAO

摘要

Heat resistant organic fibers comprising a wholly aromatic polymer having amide group and/or imide group, said fibers having properties satisfying the following formulas $wherein\; Tm\; is\; a\; melting\; point;\; Tex\; is\; an\; exotherm\; starting\; temperature;\; Xc\; is\; a\; degree\; of\; crystallization;\; DE\; is\; an\; elongation;\; DSR\; is\; a\; dry\; shrinkage\; factor\; at\; Tm;\; and\; DSR(Tm\; +\; 55\; DEG\; C)\; is\; a\; dry\; shrinkage\; factor\; at\; Tm\; +\; 55\; DEG\; C.\; The\; process\; for\; producing\; the\; fibers\; is\; also\; disclosed.$