| 摘要 |
1480712 Concentrated solutions of anionic dyestuffs BAYER AG 8 Oct 1975 [29 Oct 1974] 41246/75 Heading DIB [Also in Division C4] Natural and synthetic fibre materials, such as wool, silk, leather, polyamides and cellulose especially paper are dyed with 10-50% aqueous or aqueous-organic solutions of anionic dyestuffs, which are substantially free from electrolyte. Preferred dyestuff cations are lithium, ammonium or at least one organic base. Examples of dyestuffs given are azo, stilbene-azo and anthraquinone dyes. |
