The Year-book for Colorists and Dyers, Volume 81906 - Dyes and dyeing |
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Results 1-5 of 76
Page 49
Whilst nitro , nitroso , and azo 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 ...
Whilst nitro , nitroso , and azo 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 ...
Page 52
HYDROSULPHITE A. A 10 per cent . solution of hydrosulphite NF ( Meister ) or hyraedite , i.e. , the formaldehyde compound of sodium hydrosulphite . This solution , which is slightly alkaline , is employed in most In a few other cases ...
HYDROSULPHITE A. A 10 per cent . solution of hydrosulphite NF ( Meister ) or hyraedite , i.e. , the formaldehyde compound of sodium hydrosulphite . This solution , which is slightly alkaline , is employed in most In a few other cases ...
Page 53
With most dyestuffs which form air - oxidizable leuco compounds , the color returns immediately or in a few minutes , but with others a longer time is required . The reaction is accelerated by exposing the pattern to ammonia ...
With most dyestuffs which form air - oxidizable leuco compounds , the color returns immediately or in a few minutes , but with others a longer time is required . The reaction is accelerated by exposing the pattern to ammonia ...
Page 72
Further , if such a compound shade be extracted fractionally with dilute ammonia , the yellow is generally stripped first , and may be transferred to another piece of wool for subsequent tests . Mixtures of colors belonging to different ...
Further , if such a compound shade be extracted fractionally with dilute ammonia , the yellow is generally stripped first , and may be transferred to another piece of wool for subsequent tests . Mixtures of colors belonging to different ...
Page 76
The process for the production of the new materials consists in causing caustic alkalies to act on the ammonium compounds , which can be prepared by heating quinaldin , the homologues , or substituted derivatives thereof with esters of ...
The process for the production of the new materials consists in causing caustic alkalies to act on the ammonium compounds , which can be prepared by heating quinaldin , the homologues , or substituted derivatives thereof with esters of ...
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Common terms and phrases
acetic acid action added addition Agent or Name Alizarine alkali ammonia Anilin Anthracene apparatus assignor bath Black Blue body Boil Brilliant Brown carbonate CD CD CD cent chlorid Chrome color coloring-matters combination compounds conc consists containing cotton crystals Cyanine Dark dated Diamine Direct DISCHARGE dissolved Dye Method dyed dyestuff employed extra fabric Fast fibre Germany Green heated hydrosulphite Indigo invention relates Lakes machine Maker manufacture material Math WGS means Methyl mixed mixture mordant Mz WGS Name of Dye obtained Orange oxidizing paste Patent PK WGS pounds powder preferably prepared present printing quantity reaction reducing salts Scarlet shades soap soda sodium soluble solution Specific Gravity steam suitable Sulphur sulphuric acid temperature Thiogene treated Violet washing WCh WCh WGS WGS WGSCh wool Yellow yield York