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Donald Fletcher Holmes


U.S. Patent No. 2,284,896
Inducted in 1991
Born Sept. 29, 1910 - Died Oct. 13, 1980

Donald Fletcher Holmes and William Hanford invented the process for making the multipurpose material polyurethane. Some of the first polyurethanes were produced by the reaction of di-isocyanates with polyesters and polyesteramides. The process Holmes and Hanford invented reacts polyols and related hydroxy compounds with di-isocyanates. This method is the basis today for the manufacture of all polyurethanes.

Today, polyurethanes have a wide-reaching popularity. Flexible polyurethane foam is used as an upholstery material, and the rigid foam is commonly used as a heat-insulating material in homes, offices, and refrigerators. Polyurethane is also used in life-saving artificial hearts, safety padding in modern automobiles, and in carpeting. Born in Woodbury, New Jersey, Holmes received his B.S. in Organic Chemistry from Amherst College in 1931. In his Amherst senior class yearbook, it noted that his ambition was to become a great chemist.

Like Hanford, Holmes also received a masters degree and then a doctorate from the University of Illinois. He teamed up with Hanford at the E.I. duPont de Nemours & Company, receiving the polyurethane patent in 1942. Holmes remained with DuPont, working in the textile divisions until just before his death in 1980.

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