The finishing agent contains 0.5-10 (1-10) wt. % of nonionic surfactant prepd. by adding 1-50 (3-30) mol. of alkylene oxide to1 mol. of an amide cpd. obtd. by dehydration condensn. of 8-24C higher fatty acid and polyalkylene polyamine of formula H2N(-(CH2)n-NH)mH(I) (where n is 1 to 3; m is 2 to 9). Pref. higher fatty acids are stearic and behenic acids. The polyalkylene polyamine includes diethylene triamine, triethylene tetramine, tetramethylene pentamine, etc. The fatty acid and polyalkylene polyamine are used in a molar ratio of 3:1 to 1:1. The alkylene oxide is ethylene oxide or its mixt. with propylene oxide with an ethylene oxide content of at least 50 wt. %. The finishing agent contains 1-30 wt.% of lubricant.
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