This inventor holds 6 USPTO granted patents. Top assignee: The Dow Chemical Company. Active years: 1986-1989.
Company Filing History:
Years Active: 1986-1989
Title: Mary A Walker: Innovator in Polyurethane Foam Technology
Introduction
Mary A Walker is a notable inventor based in Lake Jackson, TX (US). She has made significant contributions to the field of polyurethane foam technology, holding a total of 6 patents. Her innovative work has advanced the understanding and application of additives in foam production.
Latest Patents
One of her latest patents involves an oxynitrate additive for polyurethane foams. In this process, a reaction mixture comprising at least one polyisocyanate component and at least one polyfunctional active hydrogen component is allowed to react. A compound selected from the group consisting of oxynitrate salts of metals from Group IV B of the Mendeleev periodic table is employed as a cell opening additive. These oxynitrate salts are effective in modifying the tin tolerance of urethane formulations. The oxynitrate compounds have proven effective in both free rise and molded foam processes. For instance, cell opening is achieved by reacting toluene diisocyanate with a polypropoxy/polyethoxy polyol in the presence of an oxynitrate salt of a Group IV B metal, such as zirconium oxynitrate. This results in a foam with more open cells compared to similar foams without the oxynitrate additive.
Career Highlights
Mary A Walker is currently associated with The Dow Chemical Company, where she continues to innovate in the field of chemical engineering and materials science. Her work has not only contributed to the company's portfolio but has also influenced industry standards in foam production.
Collaborations
Throughout her career, Mary has collaborated with esteemed colleagues, including Thomas M Knobel and Earl E Kennedy. These collaborations have fostered a rich exchange of ideas and have led to advancements in their respective fields.
Conclusion
Mary A Walker's contributions to polyurethane foam technology exemplify the impact of innovative thinking in the chemical industry. Her patents and collaborations highlight her role as a leading inventor in this specialized field.