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I N D U S T R I A L A N D E N G I N E E R I N G CHEMISTRY
this work, it is believed that the presence of silica decreased the water-holding capacity of the straw holocellulose and restricted essential fiber-to-fiber bonding.
Literature Cited (1) Beckmann, E., Liesche, O., and Lehmann, F., 2. C Z ~ Q E WChem., . 34, 285-8 (1921). (2) Brauns, F. E.. J . Am. Chem. SOC.,61, 2120-7 (1939). (3) Bray, M. W., Paper Trade J., 87, No. 25, 59-68 (1928). (4) Burkhart, B.. Baur. L.. and Link, I(. P., J . Bid. Chem., 104, 171-81 (1934). (5) Clark, E. P., J . Assoc. Oficial Agr. Chein., 15, 136-40 (1932). Clerc, J. F.. Paper Trade J., 78, No. 8, 43-7 (1924). Freudenberg, K., and Harder, M., Ann., 433, 230-7 (1923). Houtz, H. H., and Kurth, E. F., Paper Trade J . , 109, No. 24, 38-41 (1939); Hajny, G. J., and Ritter, G. J., Ibid., 111, NO.22, 131-4 (1940).
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Kurth, E. F., and Ritter, G. J., J . Am. Chem. SOC.,56, 2720-3 (1934). Launer, H. F., and Wilson, W. K., J . Research Natl. Bur. Standards, 22,471-84 (1939). Norman, A. G., and Jenkins, S. H., Nature, 131, 729 (1933); Biochem. J., 27, 818 (1933). Paleev, .4.M . , Biokhimiya, 1, 654-64 (1936). Ritter, G. J., and Kurth, E. F., IND. ENQ.CHIXVL, 25, 1250-3 (1933). Ritter, G. J., Seborg, R . M., and Mitchell, R. L., IND. ENO. CHEM..ANAL.ED., 4, 202-4 (1932). Van Beckum, 1%’.G., and Ritter, G. J . , Paper Trade J., 105, No.
Flooding of Paints Containing Chrome Greens A. E. NEWKIRII: AND S . C. HORNING Krebs Pigment and Color Corporation, Newark, N. J.
HROME greens are inorganic pigment colors which consist of a lead chromate yellow and an iron ferrocyanide blue. When they are used in paints, the blue usually tends to migrate to the surface of the paint film. This action may result in a surface uniformly darker than the mass of the paint, a mottled pattern due to the blue collecting a t the surface in rafts, or a streaked pattern if the paint has flowed after being applied. Some investigators have distinguished between the uniform and the mottled phenomena by calling the former “flooding” and the latter ‘
