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A kier or keeve (or similar spellings) is a large circular boiler or vat used in bleaching or scouring cotton fabric. They were also used for processing paper pulp. In use they were continuously rotated by an engine, steam being supplied through a rotating joint in the axle. They were usually spherical, sometimes cylindrical, and some were ...
Keeve and keeving are terms used in: Cider making; Ore dressing; Kier (industrial), or keeve, kier, or kieve, a large boiler or vat used in bleaching cotton; See also ...
"Knight" for N (the symbol used in chess notation) Taking this one stage further, the clue word can hint at the word or words to be abbreviated rather than giving the word itself. For example: "About" for C or CA (for "circa"), or RE. "Say" for EG, used to mean "for example". More obscure clue words of this variety include:
The tun (Old English: tunne, Latin: tunellus, Middle Latin: tunna) is an English unit of liquid volume (not weight), used for measuring wine, oil or honey.It is typically a large vat or vessel, most often holding 252 wine gallons, but occasionally other sizes (e.g. 256, 240 and 208 gallons) were also used.
Ammonium persulfate (APS) is the inorganic compound with the formula (NH 4) 2 S 2 O 8. It is a colourless (white) salt that is highly soluble in water, much more so than the related potassium salt. It is a strong oxidizing agent that is used as a catalyst in polymer chemistry, as an etchant, and as a cleaning and bleaching agent. [1]
It is stronger than cotton fiber but less elastic. The best grades are used for linen fabrics such as damasks, lace and sheeting. Coarser grades are used for the manufacturing of twine and rope. frieze Frieze is a coarse woollen cloth with a nap on one side, that was raised by scrubbing it to raise curls of fiber (French: frisé). In the 19th ...
Furthermore, the quality of the new dyes increased. Chemist Rene Bohn developed a brilliant blue vat dye, indanthrone, with excellent color fastness in 1901. BASF(Badische Anilin und Soda Fabrik), the largest manufacturer of vat dyes, sold it as Indanthren Blue RS, along with the synthetic indigo they placed on the market in 1897. [19]
The first anthraquinone-based synthetic vat dye was indanthrone (C.I. Vat Blue 4) - the synthesis of which was developed by René Bohn in 1901: Synthesis of indanthrone By dimerization of 2-aminoanthraquinone ( 1 ) under strongly alkaline conditions at 220-235 °C, intermediate stage 3 is obtained in two steps, which is cyclized ...