| 摘要 |
<p>Wet-spinning viscose, admixed with aminal of satd. sec.-amines and satd. aliphatic aldehydes in addn. to known modifiers, into aq. coagulating baths contg. ZnSO4, Na2SO4 and H2SO4 according to DT 2034015 is modified, without changes in quality of gel filament or filament extensibility, by adding satd. sec.-amines and satd. aliphatic aldehydes in 2:1 mole ratio to the viscose, in addn. to the known modifiers. Pref. amine is added first, followed by aldehyde, and pref. their combined concn. is 1-5% w.r.t. cellulose content of viscose. More pref. amine is Me2NH and more pref. aldehyde is HCHO.</p> |
