(EN)
The present invention relates to a method of reducing the clogging of nozzles and slits and diminishing the formation of deposits in the spin bath system in the process of making viscose filamentary and film materials by using an amphoteric surfactant having the formula (I): RNA(CnH2nNA)x-1A where R represents a hydrogen or an alifatic group with 1-24 carbon atoms, each A represents a hydrogen, an alifatic group with 1-24 carbon atoms, or BOOCCmH2m-groups, where m is a number from 1-3, B is hydrogen or a salt forming cation, n is a number from 2-3, x is 1-8, and the number of BOOCCmH2m- groups are from 1 to x+2, with the provision that the total number of carbon atoms in the aliphatic groups is from 8 to 45. The amphoteric surfactant has an excellent anticlogging effect, since it is a good dispersant and prevents or reduces precipitation in the spin bath. In addition, it has a low foaming and is very stable.
(ZH) 本发明涉及一种在制造粘胶长丝和薄膜材料的过程中，通过使用一种两性表面活性剂来减少喷嘴和缝口堵塞，并消除在纺丝浴体系中形成沉积物的方法，所述两性表面活性剂具有结构式：RNA(CnH2nNA)x-1A，其中R表示氢原子或具有1-24个碳原子的脂族基团，每个A表示氢原子、具有1-24个碳原子的脂族基团、或BOOCCmH2m-基团，其中m为1-3，B为氢原子或成盐阳离子，n为2-3，x为1-8，且BOOCCmH2m-基团的数目为1至x+2，前提是脂族基团中碳原子的总数为8-45。这种两性表面活性剂具有优异的抗堵塞性能，因为它是一种良好的分散剂并能够防止或减少在纺丝浴中的沉淀。此外，它低泡且非常稳定。
