Applied chemistry : in manufactures, arts, and domestic economy / edited by Edward Andrew Parnell.

  • Parnell, Edward A. (Edward Andrew)
Date:
1844
Catalogue details

Licence: Public Domain Mark

Credit: Applied chemistry : in manufactures, arts, and domestic economy / edited by Edward Andrew Parnell. Source: Wellcome Collection.

Provider: This material has been provided by the National Library of Medicine (U.S.), through the Medical Heritage Library. The original may be consulted at the National Library of Medicine (U.S.)

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    lime to convert he chrSvellow fnt V neXt PaSSed thr0U»h hot milk of is afterward primed1 bv hi It ° chfrTe-°ran^' *™ed and dried, and topical or sfea^ed or^mson PaFtS °f the white with lhc mixture for a wal pro'SeS fcSS^h??, Sj * 7hi^ a dark chocolate Sro™d, of work is distant hedlasfit < ,h l ^ Wlth,a t0pical Color- This kind a pattern the cloda is fir,t mimed I^TT ST°T-d neUtral St>'le' For suc'> resist,* No. 1, pa-e 16G on a f tfc™ 5 J' ,uachl!ie ^^M. with the whhe with the mixtuKre CoriC/?Uired j° be ^V and white; as described at pa-e 161 orThVt ° -Zf' \nd acetate of C0PPer- made of iron liquor, red liquor sdoh^nf? reqUired,t0 hte red > and with a mixture clay andlum, ^Rot^^^ ** ^ ture'for a topical ~S£^fi&Sl?&S£« ****' ** m^ chamcal; but the sulphate of zinc also acts by Sffhet& solution, and thus preventing its access to the fibre of tL cloth lne same resist may be employed for preventing the deposition of catechu on a coloring design previously applied in madder colorSP To produce this pattern, the cloth is treated as follows:— produce tftis 1. Print by the two-color machine with strong red liquor for the red and with a mixture of iron hquor with a little red liquor for the dark puce ' 2. Age, dung, and wash in the usual manner; 3. Dye in the madder-beck; 4. Clear by branning, &c, and dry; 5. Cover all the figures thus produced, with a resist paste of sulphate of zinc pipe-clay, and gum; r U1L' 6. Apply the catechu ground by a roughened roller, and age for a couple of days, previous to washing at the dash-wheel. l A red shade may be given to the catechu ground by impregnating the entire surface of the cloth with weak red liquor, by a roughened roller, at the same time as the strong red and puce mordants are applied. Two shades of brown are sometimes imparted by applying the weak red liquor to certain parts of the ground as for instance in broad stripes, the intervening spaces having catechu only. s V. DISCHARGE STYLE. The manner of producing a white or colored pattern on a colored ground bv the topical application of a discharger to a cloth already mordanted or dved is applicable to both mineral and vegetable coloring matters. Like the resist paste in the preceding style, the discharger may act either on the coloring matter itself or on the mordant before the cloth is exposed to a dyeino- liquid* Dischargers for mordants are generally acid mixtures quite similar to resists for mordants, but dischargers for coloring materials are obtained from different * If a very small or well-defined white figure is required, the cupreous resist should ho with lime juice and sulphuric acid or bisulphate of potash, to resist the mordant'in thP ,L,Xr resist, afterward applied as a blotch. Such a mixture is designated (not very appropriately /)