| abstract |
a = 6 - 20, b = 1 - 5 A = Alkylenrest C₁ - C₁₀ B = Phenylrest, und die Wirkung von 0,01 bis 2,0 Gew.-% eines Nukleierungsmittels als Zusätze in der Polyesterschmelze ergänzen.The invention relates to polyethylene terephthalate fibers with improved bulk, which is achieved when the effect of 0.05 to 2 wt .-% of an ester compound of the general formula [CH₃ (CH₂) a CO (O-CH₂-CH₂) b -OB] ₂-A a = 6-20, b = 1-5 A = Alkylene radical C₁ - C₁₀ B = Phenyl radical, and supplement the effect of 0.01 to 2.0% by weight of a nucleating agent as additives in the polyester melt.n n n The spun and stretched fibers in the form of a fleece show a high initial bulk when measuring the so-called bulk and a particularly high restoring force after maximum load. |