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专利名称：Process for the level dyeing of
polyacrylonitrile materials of slow, normaland rapid absorptive capacity
发明人：Joseph Koller,Manfred Motter,Peter
Moser,Ulrich Horn,Pierre Galafassi
申请号：US05/829832申请日：19770901公开号：US04181499A公开日：19800101
摘要：Described is a process for the level dyeing of polyacrylonitrile materials, inwhich process there is used for dyeing polyacrylonitrile materials that have varyingsubstantivity an aqueous dye liquor containing at least one migrating cationic dyestuffand electrolyte, as well as, optionally, at least one migrating cationic retarder and furtheradditives. This process renders possible a level dyeing of all fibre types of
polyacrylonitrile materials by one and the same dyeing method. Generally, no addition ofa migrating cationic retarder is necessary. Only in the case of a light-colored dyeing is avery minor addition thereof required. Particularly suitable migrating cationic dyestuffsare those having a more or less delocalized positive charge, the cation weight of whichdyestuffs is smaller than 310, the parachor smaller than 750 and the log P (relativelipophil property) smaller than 3.6.
申请人：CIBA-GEIGY CORP
代理人：Edward McC. Roberts
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