| abstract |
Polypropylene staple fiberncolored in the mass is designed for demanding applicationsnrequiring a level of lightnessnat least 1,000 hours of irradiation in xenoteste.nThe individual fibers contain in the massn0.05 to 0.15 wt.n2,6-di-tert-butyl-4-methylphenol, 0.2-0.6 ° / onwt. distearyl thiodipropionate, as well as 0.2nup to 0.7 wt. mixtures of 2-hydroxy-4-alkoxybenzophenonenand substituted 3,5-di-tert-butyl-4-hydroxybenzoatenv 1'ubovol'nomnweight ratio of the stabilization system. |