Crease removal

The treatment techniques for tapa fall into the following categories (a) cleaning, (b) crease removal, (c) tear... 

Crease Removal. It has been pointed out that a tapa, however fine, is not completely flat due to the manufacturing process. In addition, creases from longterm folding often result in significant deformation which cannot be entirely removed even with a complete wetting followed by drying under tension. 

A mixture of 132.5 g. (1.05 moles) of sodium sulfite, 99.5 g. (0.5 mole) of bis-4-chlorobutyl ether (Note 1), and 450 ml. of water is placed in a creased 1-1. three-necked flask fitted with an efficient sealed stirrer and a reflux condenser. The third neck of the flask is closed with a stopper, and the mixture is heated and stirred vigorously under reflux until the ether has dissolved (Note 2). At the end of this time, heating is discontinued, and 60 ml. of concentrated c.p. hydrochloric acid is cautiously added to the solution. The mixture is then boiled with stirring until sulfur dioxide is no longer evolved. Solid barium chloride dihydrate (or a 10% aqueous solution of this salt) is added to the hot solution (Note 3) until all sulfate has been precipitated then the barium sulfate is removed by suction filtration through a layer of filter aid. 

The adsorption bond can be quite strong, and is characterized by an energy known as the enthalpy of adsorption A//(ac. sj- Since a hot iron is needed to remove the creases in the cotton, we realize that the iron must have supplied sufficient heat to the adsorbed water to overcome and hence break the adsorptive bond joining it to the underlying cotton substrate. The steam we experience is adsorbed water released in this way. 

Mechanism of Action A tricyclic antidepressant that blocks the reuptake of neu-rotransmitters, such as norepinephrine and serotonin, at presynaptic membranes, in-creasing their concentration at postsynaptic receptor sites. Therapeutic Effect Results in antidepressant effect. Anticholinergic effect controls nocturnal enuresis, Pharmacohinetics Rapidly, completely absorbed after PO administration, and not affected by food. Protein binding 95%, Metabolized in liver (significant first-pass effect), Primarily excreted in urine. Not removed by hemodialysis. Half-life 16-40 hr. 

Tho dyed skins erenow placed on the plate of the hydraulic press, and the excess of dye-stuff expressed, after which they are worked cn the beam, to remove creases or wrinkles, and dried first spontaneously in... 

A solution of 30 g. of urea in 350 ml. of water is placed in a 1-1., three-necked, creased Pyrex flask and cooled to 0°C. with an ice bath. A gas inlet tube made of 2-mm., heavy-wall, glass tubing is attached to the end of the fluorine supply line by means of a Tygon sleeve in such a manner that no Tygon is exposed. It is fitted into one of the necks of the flask so that the tip is under the surface of the solution. A thermometer and a gas outlet are attached to the other two necks. It is convenient to use a bubbler on the gas outlet containing urea, potassium iodide, and a little acid. This not only will remove the excess fluorine but will serve to indicate when the fluorination is complete. 

Ideally, the plate is removed from the book and is then moistened and pressed between blotting papers for about an hour, subsequently being refolded and tipped back into the book. In some cases it may be feasible to flatten the plate while it is in situ in the book and folded, but a disadvantage is that unless blotting paper can be strategically positioned, the folds of the plate may be creased too sharply and to their detriment. 

BuOK (84 g, 0.75 mol) was added to DMSO (400 mL) in a creased flask fitted with stirrer and condenser. l,l-Dichloro-2-ethyl-3-methylcyclopropane(2, 38 g, 0.25 mol) was added dropwise at 25"C under N2 (external cooling). After 2 h, the product was isolated by addition to ice-water, pentane extraction, drying (Na2S04) and removal of pentane at 25"C yield 62% (determined by GC). 

Figures 7-19 to 7-23 show the various fabric paths in continuous open-width bleaching equipment with steamer systems based on positive fabric guidence without plaited storage. The main features of this system are very much suitable for crease susceptible fabric, fair degree of whiteness, fabric with good absorbancy, less chances of fabric degradation and fair mote removal.

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