Donald A Holmer

Donald A. Holmer is a notable inventor based in Pensacola, FL (US). He has made significant contributions to the field of polyamide fibers, particularly through his innovative patents. With a total of 5 patents to his name, Holmer's work has had a lasting impact on the industry.

Latest Patents

One of Holmer's latest patents focuses on polyamide antiozonants. He describes novel compounds produced by reacting 5-sulfoisophthalic acid or a salt thereof, such as the potassium salt, with a water-soluble copper salt, like cupric acetate monohydrate. These compounds are effective antiozonants for polyamide fibers, especially when the fibers are dyed with disperse dyes. Sufficient amounts of these compounds are incorporated into the fibers to provide from 10 to 100 ppm, based on the weight of the fiber, of copper. Additionally, he has developed fiber-forming polymers derived from hexamethylene diamine and terephthalic acid. These polymers can be prepared in a batch autoclave and extruded without the need for cleaning the autoclave between successive runs.

Career Highlights

Holmer has spent a significant portion of his career at Monsanto Company, where he has been able to apply his innovative ideas and research. His work has contributed to advancements in the field of materials science, particularly in the development of durable and effective polyamide fibers.

Collaborations

Throughout his career, Holmer has collaborated with several notable individuals, including Oscar A. Pickett, Jr. and Richard D. Chapman. These collaborations have further enhanced his research and development efforts.

Conclusion

Donald A. Holmer's contributions to the field of polyamide fibers and his innovative patents demonstrate his commitment to advancing materials science. His work continues to influence the industry and inspire future innovations.