Raw cotton, due to the presence of natural waxes and fats, is quite resistant to wetting by ordinary water, but the addition of a small amount of certain chemicals, known as wetting agents, causes the cotton to become wet rapidly. Wetting agents are accordingly used to speed up various textile operations which involve wetting-such as souring cleaning and dyeing.
This is a knock testing engine being used by DuPont for fundamental combustion research. Since its beginning in 1927, DuPont's fundamental research program has proved helpful in laying the foundation for applied research along many lines. In this research program, the Petroleum Laboratory at Deepwater Point, New Jersey is studying the effect of various fundamentals of fuel behavior.
DuPont's 25 million pound 'Hylene' organic, isocyanates plant now on stream at the Chambers Works, Deepwater Point, New Jersey. The plant was constructed during 1955 and completed in January of 1956. It currently employs approximately 80 people. Organic isocyanates are versatile chemicals which, in combination with various other compounds, form rubber like or plastic like material with potentially wide use in such fields as building, transportation, upholstery and insulation.
The scale on the floor below at the DuPont Company's tetraethyl lead plant is being read from the catwalk by means of a periscope. The scale shows the weight of the material going into the manufacture of tetraethyl lead, an antiknock compound used in almost all the gasoline sold opt motorists throughout the world. DuPont also produces tetraethyl lead compound for aviation gasoline. The fluid is manufactured at the Chambers Works and is markets by the Petroleum Chemicals Division. Another plant located at Antioch, California manufactures tetraethyl lead for the West Coat market.
A pad steam process developed by the DuPont Company's Dyestuffs Division, provides an economical method for continuous application of vat dyes to relatively small quantities of fine fabrics. A working model of the apparatus is here being demonstrated by Meadows S. William s, Jr. at the left and Dr. R.J. Thomas, both of the company's Technical Laboratory. The cloth enters at the left, picking up the insoluble dyestuff in a pigment padder, then goes through the flue dryers. Chemicals are applied in the second padder in the center and the dye is finished in the steam chamber, at the right. The color which has now penetrated into to the fabric, changes back into its permanent insoluble form.