The Year-book for Colorists and Dyers: Presenting a Review of the Year's Advances in the Bleaching, Dyeing, Printing and Finishing of Textiles, Volume 81906 - Dyes and dyeing |
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Page 49
... hydrosulphite is used as the reducing agent , and potassium persulphate as the oxidizing agent . Contrary to what might have been anticipated , the leuco compounds formed remain in great part attached to the fibre , whilst the splitting ...
... hydrosulphite is used as the reducing agent , and potassium persulphate as the oxidizing agent . Contrary to what might have been anticipated , the leuco compounds formed remain in great part attached to the fibre , whilst the splitting ...
Page 50
... Hydrosulphite . Color restored on Color not restored by air , but on oxidation exposure to air . with persulphate . Color not restored either by air or persulphate . Not altered by hydro- sulphite . Pyrone , Acridine , Quinoline , Not ...
... Hydrosulphite . Color restored on Color not restored by air , but on oxidation exposure to air . with persulphate . Color not restored either by air or persulphate . Not altered by hydro- sulphite . Pyrone , Acridine , Quinoline , Not ...
Page 52
... HYDROSULPHITE A. A 10 per cent . solution of hydrosulphite NF ( Meister ) or hyrae- dite , i.e. , the formaldehyde compound of sodium hydrosulphite . This solution , which is slightly alkaline , is employed in most cases . In a few ...
... HYDROSULPHITE A. A 10 per cent . solution of hydrosulphite NF ( Meister ) or hyrae- dite , i.e. , the formaldehyde compound of sodium hydrosulphite . This solution , which is slightly alkaline , is employed in most cases . In a few ...
Page 53
... hydrosulphite , then rinsed well under the tap , and allowed to lie on white paper for an hour or so . With most dyestuffs which form air - oxidizable leuco compounds , the color returns immediately or in a few minutes , but with others ...
... hydrosulphite , then rinsed well under the tap , and allowed to lie on white paper for an hour or so . With most dyestuffs which form air - oxidizable leuco compounds , the color returns immediately or in a few minutes , but with others ...
Page 55
... hydrosulphite B. X. Decolorized . Color is not restored by air or by persul- phate . Azo Group No. 4 - Chrysoidine , Tannin Orange , Janus Yellow . Y. Not decolorized or only very slightly . Treat fibre with conc . H2S04 . Green ...
... hydrosulphite B. X. Decolorized . Color is not restored by air or by persul- phate . Azo Group No. 4 - Chrysoidine , Tannin Orange , Janus Yellow . Y. Not decolorized or only very slightly . Treat fibre with conc . H2S04 . Green ...
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Common terms and phrases
acetic acid Acid Green Agent or Maker Agent or Name Alizarine Black alkali ammonia Anilin Anthracene apparatus assignor AZO DYE bath Brilliant Brown carbonate caustic CD Benzo CD Direct cent chlorid Chrome color coloring-matters conc cotton CT Mz Cyanine dated Decolorized DISCHARGE dissolved Dye Method dyestuff Elberfeld Eosine exposure to air extra fabric Fast Blue fibre gallons Germany heated hydrochloric acid Indigo invention relates Klp CD Klp WGS material Math CD Diamine Math WGS Methyl Violet Methylene Methylene Blue mixture mordant Mz CD Dianil Mz Lakes Mz WCh Alizarine Mz WGS Name of Dye Naphthol obtained Orange Orange G oxazine oxidizing persulphate PK CD PK WGS Ponceau powder return on exposure Safranine salts Scarlet shades soap soluble solution Specific Gravity SS WGS sulphonic sulphuric acid Tannin temperature thiazine Thickening Thiogene triphenylmethane washing WCh Alizarine Blue WGS Azo WGS Fast wool Yellow G