Identifier: MAB.31962004184572Images
Title: New products manufactured by Farbwerke vorm. Meister Lucius & Brüning, Hoechst on the Main, Germany.
Year: 1900 (1900s)
Authors: Metz, H.A., & Co., Boston
Subjects: Dyes and dyeing Dyes and dyeing--Chemistry Textile printing
Publisher:
Contributing Library: Sterling and Francine Clark Art Institute Library
Digitizing Sponsor: Federally funded by a grant from the Institute of Museum and Library Services

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shing with silicate of soda, quick-lime (5 parts per 1000) orcaustic soda solution may be used, although the silicate has the least effect onthe indigo bottom. It is advisable to steam and finish the printed goods as quickly as possible,but if this cannot be done immediately, the material must be protected not onlybefore, but also after steaming, against moist air, by winding on rolls and keep-ing in a warm dry room 85° to 100° F. After steaming the white is cleared atabove by passing the pieces through an alkaline bath. Although the indigo is readily converted into a leuco-compound by hydro-sulphite, still the discharged places are apt to show a bluish tint if the reducedcompound is not completely removed from the printed parts, or if the indigo-white is partly reoxidised to blue before the steamed pieces are washed. Theaddition of anthroquinone to the printing paste aids the discharging effect ofhydrosulphite and prevents the indigo-white from being too quickly reoxidised. • •
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