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
... compounds were completely destroyed on reduction , those dyestuffs which may be regarded as having an ortho quinonoid structure gave leuco compounds which were readily reoxidized by air to the original dyestuffs , and those to which a ...
... compounds were completely destroyed on reduction , those dyestuffs which may be regarded as having an ortho quinonoid structure gave leuco compounds which were readily reoxidized by air to the original dyestuffs , and those to which a ...
Page 52
... compound of sodium hydrosulphite . This solution , which is slightly alkaline , is employed in most cases . In a few other cases , however , in which the reduction is more sluggish ( e.g. , azo yellows ) , it has been found necessary to ...
... compound of sodium hydrosulphite . This solution , which is slightly alkaline , is employed in most cases . In a few other cases , however , in which the reduction is more sluggish ( e.g. , azo yellows ) , it has been found necessary to ...
Page 53
... compounds ) only a slight shade may return . Safranine and its azo derivatives yield on reoxidation of the leuco compound a violet color . This is due to the condensation of the leuco - safra- nine with the formaldehyde present in the ...
... compounds ) only a slight shade may return . Safranine and its azo derivatives yield on reoxidation of the leuco compound a violet color . This is due to the condensation of the leuco - safra- nine with the formaldehyde present in the ...
Page 72
... compound shade be extracted fractionally with dilute ammonia , the yellow is gener- ally stripped first , and may be transferred to another piece of wool for subsequent tests . Mixtures of colors belonging to dif- ferent groups will ...
... compound shade be extracted fractionally with dilute ammonia , the yellow is gener- ally stripped first , and may be transferred to another piece of wool for subsequent tests . Mixtures of colors belonging to dif- ferent groups will ...
Page 76
... compounds , which can be prepared by heating quinaldin , the homologues , or substituted derivatives thereof with esters of suphonic acids , such as the ethylicester of ethyl sulphonic acid . ( C2H - O - SO2 — O — C2H ̧ . ) the methylic ...
... compounds , which can be prepared by heating quinaldin , the homologues , or substituted derivatives thereof with esters of suphonic acids , such as the ethylicester of ethyl sulphonic acid . ( C2H - O - SO2 — O — C2H ̧ . ) the methylic ...
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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