Erasable ink

Numerous nonplasticizer uses of DEHP have been reported. However, it is not clear to what extent these uses arc, or have ever been, important. These include 1he use of DEHP as a solvent in erasable ink, as an acaracide in orchards, as an inert ingredient in pesticide products, in cosmetics, in vacuum pump oil, as a component of dielectric fluids in electrical capacitors, to detect leaks in respirators, and for use in testing of air filtration systems (HSDB 1990 Mannsville Chemical Products Corporation 1990 NTP 1989). 

The examination of ink material may provide evidence of considerable value. The detection of an erased ink may indicate a modification of the original message, and drawing comparisons between different inks may indicate a common origin and with the help of databases, the brand of the writing instrument of ink entries can be identified. Furthermore, under certain circumstances, the date when inks were placed on documents can be determined. 

Yao, C. Quickly erasing inks and writing boards. Faming Zhuanh Shenqing Gongkai Shuomingshu CN 1126229, 1996 Chem. Abstr. 2000,132, 124289. 

Preparation of an erasable ink based on poly(vinyl benzal), water, ethanol, carbon black, polyoxyethylene, and an acrylic-styrene copolymer [127]. 

Tinten-fabrikant, m. ink maker, -farbe, /. ink color, ink dye. -fass, n. inkholder. -fass-feder, /. fountain pen. -fisch, m. cuttlefish, sepia, -fischschwarz, n. sepia (the pigment), -flasche, /. ink bottle, -fleck, m. ink stain, ink spot, -gummi, n. (rubber) ink eraser, -loscher, m. blotter, -pulver, n. ink powder, -stein, m. inkstone. -wein, m. tent (a deep red wine). 

Use waterproof ink Never pencil Pencil will disappear with time, and so will your grade. Cheap ink will wash away and carry your grades down the drain. Never erase Just draw one line through yuor orrcro your errors so that they can still be seen. And never, never, never cut any pages out of the notebook ... 

B. All notebook entries will be made in ink. Use of graphite pencils or another erasable writing instrument is strictly prohibited. 

Why should notebook data entries always be made in ink and never erased or otherwise made unintelligible ... 

Handwriting the application can lead to smudges, or errors that must be corrected with an eraser or wite-out. Use an erasable pen with blue or black ink, and test it to be certain it is flowing smoothly before writing on the application. 

Parchment Shop. There are five restorers in this shop. Parchment documents and book covers to be restored get a mechanical surface cleaning with soft erasers then harder ones, if required, to remove dirt and grime. Hard, embrittled, and dry artifacts have their inks and pigments fixed with an acrylic resin spray or with a fine brush dipped in paraloid before immersion in a bath of ethanol and water (70% and 30%, respectively). 

How does an eraser work, and why does it erase pencil more easily than ink ... 

Why do erasers not work as well on ink Unlike graphite, ink is absorbed into paper, so rubbing the surface isn t enor h. Deeper penetration is needed, which damages the paper. 

Graphite is an attractive chemical for writing for a few reasons. Graphite, unlike most inks, is not dissolved by water or affected by moisture, but it s easy to erase. 

Besides the major essentials, many of the smaller everyday things often taken for granted are also derived from carbon and its compounds. Consider an ordinary pencil. The lead (actually graphite), the wood, the rubber eraser, and the paint on the surface are all either carbon or carbon compounds. The paper in this book, the ink on its pages, and the glue holding it all together are also made of carbon compounds. 

As we will learn in Chapter 10, the spreading of the ink blob is driven by gradients in the chemical potential of the ink and the water. These gradients are being erased by the diffusion process. 

Safety inks Printing inks which will change color or bleed when ink eradicator or water is applied to prints. Also inks which will erase easily. Usually, mixtures of a drying-oil ink with an aqueous solution of a water-soluble color. 

Kawashima, S. Pens equipped with writing inks, ink erasers, and wipers. Ipn. Kokai Tokkyo Koho JP 10006687, 1998 Chem. Abstr. 1998,128, 142146. 

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