Goods, drying

In many porotts drying goods there are nitmerous narrow pores and capillaries, which contain liqttid. This liquid is transported to the material s surface by capillary action. For wide pores with more than about 1 pm in diameter, the vapor pressure at the liquid s surface is the equilibriitm vapor pressure, whieh only depends on the temperature. If a drying good has pores so fine that a vapor pressure drop of 1 occurs, it behaves as hygroscopic. 

Colloidal materials tend to swell upon moisture uptake. 

The equations of Freundlich, Langmuir as well as Brunauer, Emmet, and Teller, which were presented in Chap. 2, are suitable for the mathematical description of sorption isotherms. 

The heat of phase change, q, also often called the sorption enthalpy, can be divided into the enthalpy of vaporization A/ lg and the bond enthalpy A/ g, as it was already presented in Chap. 2. 

Similar to adsorption a hysteresis of the equilibrium curve may also occur in drying. In drying processes, the desorptive equilibrium is relevant. 

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Modified atmospheres that predominantly contain nitrogen are increasingly used in the packaging of fresh pasta, nuts (qv), potato chips, dry goods (such as coffee), breads, and prepared salads to extend shelf-life. 

EllenwareU) f.pl, dry goods, draper s goods. Ellef) /. alder. 

Arnold Rothstein — the godfather of organized crime — was the son of a wealthy Our Crowd dry goods merchant. 

Visit the nearest natural foods store or local grocery store with a natural foods department. Examine the products you find there. You will probably see frozen and refrigerated foods, dry goods like tea, and health and beauty care products. 

Low friction, in the range 0.05-0.15 Maximum PV about 0.7MN/ms when dry Good adhesion... 

Acetone is completely miscible with water and its susceptibility to acid and base catalysed self condensation makes it particularly difficult to dry. Good results are obtained by drying over 3A sieves (10% w/v) overnight (any... 

Of other metals, gold and silver are only used for special apparatus in isolated cases platinum, for concentrating sulphuric acid zinc for vessels for storing, and for scoops and similar vessels used in handling dry goods and tin, almost exclusively in the form of tubes. Nickel and aluminium are also now largely used in the construction of apparatus for chemical works, and will no doubt be used more frequently in the future as the prices for these goods become further reduced. 

Webbing Manufacturers Institute. E. B. Pomeroy, secretary, 13 Masonic St., New London, Conn. Wholesale Dry Goods Institute, Inc., 40 Worth St., New York, N. Y. Henry Matter, executive... 

But for the past few days he had spoken to them about only one thing the girl, the daughter of a merchant who lived in the village they would reach in about four days. He had been to the village only once, the year before. The merchant was the proprietor of a dry goods shop, and he always demanded that the sheep be sheared in his presence, so that he would not be cheated. A friend had told the boy about the shop, and he had taken his sheep there. 

Spray-drying Good particle size control spherical-shaped particles easy and convenient operation Yield dependent on formulation heat inactivation surface denaturation... 

NFT nutrient film technique NRDGA National Retail Dry Goods Association... 

PROPERTIES OF SPECIAL INTEREST Rapid drying. Good adhesion. Flexibility. Mar resistance and durability. Ester groups can be hydrolyzed under alkaline conditions. 

The name rayon was officially adopted in 1924 by the National Retail Dry Goods Association. Prior to this, the fiber was called artificial silk, wood-silk, or viscose silk. On October 26, 1937, the Federal Trade Commission (FTC) officially defined rayon as a textile fiber or yarn produced chemically from cellulose or with a cellulose base. This definition covered cuprammonium and viscose rayon as well as acetate fiber. To avoid confusion in the trade, FTC rules were adopted on December 11, 1951, which defined rayon as man-made textile fibers and filaments composed of regenerated cellulose. A separate definition was adopted for acetate, man-made textile fibers and filaments composed of cellulose acetate. ... 

Features Fast drying, good chem. resist. long pot life outstanding flexibility... 

Uses Acrylic for very low VOC coatings, esp. low VOC concrete and tile sealers, wood sealers, concrete stains and sealers Features Hard, fast drying good water resist. extremely low min. film formation temp. good hold out in wood sealers Properties Off-wh. translucent emulsion dens. 8.6 Ib/gal vise. 30 cps pH 8.3 hardness (Konig) 37 42% NV by wt. 

Chem. Descrip. Dicylopentadiene/linseed oil copolymer in min. spirits Uses Drying oil for house paint primers, enamels, uminum paints Features Fast dry good water resist, and hardness Properties Gardner 10 max. color dens. 7.65 Ib/gal vise. (G-H) R-U add no. 4 max. 70% NV CPS072 [Degussa/Silanes]... 

Features Formulations meet some FDA regs. fast air dry good corrosion resist. adhesion to a variety of substrates can be formulated into water-sol. coatings when neutralized with the proper amines Properties Gardner 7 max. color sp.gr. 0.99 dens. 8.3 Ib/gal vise. 49,000 cps acid no. 60 (solids) 70 01% solids Epotuf 92-828 [Reichhold]... 

Features Fast drying good adhesion high gioss exc. water resist. Properties Opaque emuision dens. 8.7 ib/gai vise. 700 cps acid no. 47 pH 8.5 46% soiids... 

Features Very hard, high gloss, film-forming latex fast drying good water and grease resist. exc. flow and leveling props. 

Features Low odor and VOC fast drying good exterior durability Regulatory DOT nonregulated SARA 313 nonreportable Properties Milky wh. liq. mild ammonia odor disp. in water sp.gr. 1.03 dens. 8.70 Ib/gal vise. 1.31 cps flash pt. (PMCC) > 93 C pH 7.6 VOC 0... 

Features Chain stopped fast dry, good compat. 

Features NCO-free fast dry good pot life outdoor durability low VOC Properties APHA 100 color dens. 8.40 Ib/gal vise. (Gardner-Holdt) H-J acid no. 2 max. EEW 569 60% NV Setalux 17-1434 [Akzo Nobel Resins]... 

Uses Acryiic for metai protective topcoats Features NCO-free fast dry good durabiiity more flexibie Properties Gardner 3 max. coior dens. 7.87 ib/gai vise. (Gardner-Hoidt) F-i acid no. 12-16 VOC 3.5 55% NV Toxicology Low toxicity Setalux 17-1745 [Akzo Nobei Resins]... 

Features Good compat. rapid dry good adhesion good color and gloss retention... 

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