what are dupont bristles
TynexÂ®, TynexÂ® A, ChinexÂ®, HeroxÂ® and OrelÂ® are DuPont registered. trademarks for its filaments that are used in premium quality brushes. Applications are: â¢ TynexÂ® 612 Nylon level filaments for toothbrushes. â¢ TynexÂ® 612 Nylon fine filaments for cosmetic brushes. â¢ TynexÂ® 612 Nylon tapered filaments for paintbrushes.