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    • 4. 发明授权
    • Process for dyeing uniformly polyacrylonitrile fiber materials
    • 均匀地染色聚丙烯腈纤维材料的方法
    • US4252535A
    • 1981-02-24
    • US16300
    • 1979-02-28
    • Norbert KollodzeiskiRudolf LowenfeldEberhard MundlosReinhard MohrKurt Hohmann
    • Norbert KollodzeiskiRudolf LowenfeldEberhard MundlosReinhard MohrKurt Hohmann
    • D06P3/76D06P3/70C09B27/00
    • D06P3/76Y10S534/01Y10S8/927
    • A dyeing process has been found which enables to dye uniformly polyacrylonitrile fiber materials, by using as dyestuffs basic azo dyestuffs being non-quarternized and containing neither cationic quaternary ammonium groups nor cationic N-substituted or N-unsubstituted iminium groups, said azo dyestuffs containing on the other hand at least one unsubstituted or substituted amino group, hydrazino group, amidino group or guanidino group capable of forming salts. The very dyeing process as such is carried out according to usual processing data for dyeing polyacrylonitriles in a slightly acid medium. Especially with the use of several of these dyestuffs for polychromic dyeing, such as trichromic dyeing, special advantages are obtained, insofar that even at cut-rate dyeing periods and for preparing light color shades, there are obtained even dyes with constant color shades, when using these dyestuffs having good migrating properties.
    • 已经发现染色工艺能够均匀地染色聚丙烯腈纤维材料,通过使用染色剂,碱性偶氮染料不被季铵化并且既不含阳离子季铵基团也不含阳离子N-取代或N-未取代的亚胺基团,所述偶氮染料含有 另一方面至少一个能够形成盐的未取代或取代的氨基,肼基,脒基或胍基。 根据通常的加工数据,在微酸性介质中染色聚丙烯腈进行染色。 特别是使用这些染料中的几种用于多色染色,如三色染色,得到了特殊的优点,即使在切割染色期间和用于制备浅色色调的情况下,甚至获得具有恒定色调的均匀染料,当 使用具有良好迁移性能的这些染料。