摘要:
Leuco vat dye preparations in granular form, containing as their essential components leuco vat dyes, alkaline metal hydroxide and a mixture of 10 to 100 wt.% of an α-hydroxy-C1-C4-alkyl sulphinic aid, one of its salts or derivatives and 0 to 90 wt.% of hydrosulphite as a reducing agent, and the production of these preparations and their use in dyeing cellulose-containing fabrics.
摘要:
Concentrated leucoindigo solutions, comprising the following essential ingredients: 25-55 wt. % leucoindigo in the form of a leucoindigo salt, a mixture of at least two alkali metal hydroxides, whereby the respective proportion of each metal hydroxide does not exceed 70 mol % and the amount thereof corresponds to the stochiometrically required amount for the leucoindigo to be converted into said neutral leucoindigo salt, in addition to water. The invention also relates to the production of said leucoindigo solutions and the use thereof for colouring textile material containing cellulose.
摘要:
Granular leuco vat-dye preparations containing, as essential components, leuco vat-dye, reducing agents and alkaline metal hydroxide, and the production of said preparations and their use in dyeing cellulose-containing textile materials.
摘要:
Granular leuco vat-dye preparations containing, as essential components, leuco vat-dye, reducing agents and alkaline metal hydroxide, and the production of said preparations and their use in dyeing cellulose-containing textile materials.