Maywood Chemical

Stepan Chemical Co., Maywood Chemical Works Division, 100 West Hunter Ave., Maywood, N. J. 

American Potash and Chemical Lithium Corp. of America Maywood Chemical Works (Stepan Chemical)... 

Proteins are by nature amphipathic or amphiphilic molecules that is, they contain both a hydrophobic (nonpolar) and a hydrophilic (polar) moiety. However, natural proteins per se are not used as commercial surfactants. Rather, proteins are modified by chemical or enzymatic means to products with surface-active properties. The use of modified proteins based on casein, soybean, albumen, collagen, or keratin is not new [5]. The Maywood Chemical Company introduced commercial protein-based surfactants (PBS) in the United States in 1937. They were primarily condensation products of fatty acids with hydrolyzed proteins [5], Renewed interest in PBS has occurred not only as products based on renewable raw materials (i.e., proteins and fatty acids), but also as a solution to waste disposal for animal and vegetable protein byproducts [5], Among the commercial PBS, the following trade names have been active Crotein, Lexein, Magpon Polypeptide, Protolate, Sol-U-Teins, and Super Pro. 

Delmar Scientific Laboratories, Inc., 317 Madison St., Maywood, 111. 60153 Dow Chemical Company, Midland, Mich., 48640... 

Sung, J.H. et al., 2014. Using physiologically-based pharmacoki-netic-guided body-on-a-chip systems to predict mammalian response to drug and chemical exposure. Experimental Biology and Medicine (Maywood, N.J.), 239, pp. 1225-1239. 

In 1960 the industry s over-capacity only allowed operation at about 20% of capacity, and Maywood ceased the production of lithium compounds. LCA closed their Minneapolis plant in 1959 (and canceled their long-term ore contract with Quebec Lithium), while American Potash Chemical Co. closed their Texas plant in 1963. American Potash s Searles Lake lithium operation had started in 1951 and closed in 1978. Quebec Lithium in turn started producing lithium chemicals, but closed their plant in 1965. The production of ore from South Dakota stopped in 1969, and sanctions against Southern Rhodesia (still one of the world s major suppliers) curtailed their ore imports from 1965-1980. Foote s Clayton Valley brine operation commenced in 1966, and LCA started mining spodumene in North Carolina in 1968. Foote s Salar de Atacama operation started in 1984, while SQM s started at the Salar de Atacama, and FMC s (formerly LCA) at the Salar de Hombre Muerto in 1997. Both of the North Carolina mines closed after their brine operations had been well established, and FMC essentially closed their Hombre Muerto plant in 1998 because of SQM s greatly reduced lithium carbonate pricing. 

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