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 261
does not yield any better results. Preparing of the yarns. The yarns ar ^ first boiled with caustic soda or soda ash andthen well washed and dried. They should be perfectly dry beforethey are prepared with Beta-Naphtol. Dyeing Paranitraniline Red I. Mordanting with Beta-Naphtol. The mordanting or… … The composition of the preparing bath is the following: For 100 lbs. of yarn: A) Preparing liquorwith Beta-Naphtol Preparing liquorBeta-Naphtol a:Red Develope; I. 2 lbs.2 lbs. 31/* oz. :;|. oz. gallons 11J2 pts. 2 lbs. 3V-i oz. Beta-Naphtol and 3 oz. Red Developer C are mixed with2 lbs. 7 oz.…
Dyes and dyeing
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