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C&EN
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THE IRON AGE IS PASSING... And contributing to the iron's retirement are chemicals like 2-hydroxyethyl carbamate, hydroxyethyl/ hydroxypropyl carbamate, and 1,3-propanediamine. These Jefferson chemicals are used as intermediates in the new finishing agents for ''permanent press" cotton and cellulosic-synthetic fiber blend fabrics. The reaction product of hydroxyethyl carbamate and formaldehyde imparts a high level of wrinkle resistance to cotton and synthetic blends of fabrics. The finish has outstanding durability, especially under the acidic conditions used in commercial laundering, and the treated fabric is not damaged by repeated chlorine bleaches. The methylolated HEC gives excellent dimensional stability to fabrics, thus avoiding the necessity of oversizing the garments. Colored goods have exceptional lightfastness when finished with this agent, and there is no yellowing of white goods. Methylolated hydroxyethyl/hydroxypropyl carbamate solution imparts the same properties to fabrics as methylolated HEC and has the additional advantage of remaining a liquid under normal storage conditions. Anhydrous hydroxyethyl carbamate, which melts at 109°F., is slow to crystallize. Reportedly, 1,3-propanediamine offers many of the above advantages when converted to the methylolated cyclic propylene urea . . . excellent wash-wear appearance on whites, superb wrinkle resistance and dimensional stability. It is best known, however, for its freedom from chlorine damage. All three of these intermediates show great promise in permanent press fabric finishes and are undergoing rigorous testing. Another Jefferson chemical, N-Aminoethylethanolamine, is used as an intermediate in the manufacture of cationic and amphoteric textile softeners for cotton, rayon and wool. It is also useful in the formation of antistatic agents, acid fulling agents, and penetrants in carbonizing for textile processing, and in the preparation of sequestrants. These chemicals are available in commercial quantities. We will be happy to supply samples and assist in your investigations. . . . Jefferson Chemical Company, Inc., P. O. Box 53300, Houston, Texas 77052.
Jefferson C &EN
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