The dyeing of cotton and other vegetable fibres with the dyestuffs of Leopold Cassella & Co. Frankfort o. M (1902)
Leopold Cassella & Co · Frankfort o.M. : Leopold Cassella & Co. · leaf 207
developing liquor. The cottonremains in this bath for about 20 minutes, is then takenout and washed in water. All liquors are used cold, and care should be takenthat the cotton is no longer warm when brought into thediazotising bath. bi The working is the same as described under a) with… … Dyeing loose Cotton. 191 The dyed cotton is rinsed and hydro-extracted and thenplaced into a net which can be lifted and lowered by meansof a travelling crane arranged above the vats. The first vat A is filled with nitrite and hydrochloricacid, the second vat B contains water acidulated with…
Dyes and dyeing
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