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  • Description: colloidal
(6 results)



Display: 20

    • View of cross section

    • Ludox Colloidal Silica
    • This diagram shows a typical surface cross section as it might appear, magnified many thousands of times, under an electron microscope. The surface might be that of a fiber, or of a painted wall, or even wall paper. In Line No. 1, rough soil...
    • View of Ludox particle size

    • Ludox Colloidal Silica
    • This photograph demonstrates the exceedingly fine particle size of Ludox colloidal silica, a new product of the DuPont Company. This picture was taken with an electron microscope. The magnification is 25,000 diameters. This high magnification was...
    • View of treated wallpaper

    • Uses of Treated Fabrics (Richie 2018H)
    • Here is a sample of wall paper, half of which has been treated with 'Ludox' colloidal silica. The entire surface has been heavily soiled with ordinary house dirt sweepings, then wiped with a clean cloth. The treated half emerges fresh and clean,...
    • View of carpet treated by Ludox

    • Uses of Treated Fabrics (Richie 2018H)
    • Ludox colloidal silica, a product of DuPont research, is rapidly being adopted by the carpet industry as a soil retardant. It is easily applied at the mill by a multiple spray method, as shown here. Tiny, smooth particles of the Ludox fill up the...
    • View of ultracentrifuge

    • Research Tools and Apparatus
    • The ultracentrifuge used at the Experimental Station to determine molecular weights of colloidal materials such as proteins, cellulose and rubber. The upper half of the housing is shown at the top of the picture. Observations are made through the...
    • DuPont Magazine [February 1948]

    • Periodicals; Chemical industry; Presidents; Metallurgical industry; Sewing machine industry; Plastics industry; Textile industry;
    • Table of Contents: The company's tenth president; Bleaching by the mile; The metals industry and DuPont; Story previews; Steel...and your sewing machine; Bottles can be packages; U.S. 40 follows Buffalo Bill's trail; Revolution in the hen house; Rx...

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