direct Light Grey LBN is a Dyestuffs product. Key specs — Origin: hebei,China.
Product Description
nature : dark gray color dye bar, the water-soluble blue-violet solution was not soluble in ethanol. The concentrated sulfuric acid was greyish blue-green, purple was diluted. Its solution, plus dark blue concentrated hydrochloric acid precipitation; Concentrated liquid caustic soda was blue purple precipitation.
Right cellulose staining dye is absorbed into the general, a temperature of 100 ° C in the largest pro-together. Hard water is not sensitive to, leveling, good pair of copper, iron, ion unchanged. preparation methods : amino acid diazotization C, with A naphthylamine for coupling.
Conjugates of a secondary diazotization, with 1,7-naphthalene amino acid (Cliff acid) coupling. This second-azo diazotization again, and threw acid and gamma third coupling, the final salting out, filtration and drying and prepared.
Raw material consumption (kg / t) C amino acid (100%) 330 Sodium Nitrite (Industry) A naphthylamine 200 (100%) 160 caustic soda (100%) 14001,7 - Naphthylamine periodate (100%) 230 soda ash (Industry) 500 γ acid ( 100%) 160 hydrochloride (31%) 500 Sulfuric acid (100%) 510 industrial salt 4000purposes : mainly for cotton and viscose fibers such as cellulose fabric dyeing and printing, can also be used for silk fabrics and wool / rayon blended fabric dyeing.
