Location History:
- Tarentum, PA (US) (1989 - 1991)
- Gibsonia, PA (US) (1991)
Company Filing History:
Years Active: 1989-1991
Title: Innovations by William S. Ewing
Introduction
William S. Ewing is a notable inventor based in Gibsonia, PA (US). He has made significant contributions to the field of thermosetting powder coatings, holding a total of 3 patents. His work focuses on improving the properties and stability of coating compositions, which are essential in various industrial applications.
Latest Patents
Ewing's latest patents include innovative formulations that enhance the performance of powder coatings. One of his notable inventions is the "Polyol-modified polyanhydride curing agent for polyepoxide powder." This patent discloses an improved thermosetting powder coating composition that comprises an epoxy resin and a curing agent. The curing agent is a polyol-modified polymeric polyanhydride containing anhydride linkages in the polymeric backbone, which significantly enhances the coating's properties.
Another significant patent is the "Beta-hydroxyalkylamide cured acid polymer/polyepoxide powder coating." This invention presents a thermosetting powder coating composition that exhibits excellent stability and physical properties, such as appearance, flexibility, hardness, solvent resistance, and corrosion resistance. The composition consists of a co-reactable particulate mixture of a carboxylic acid group-containing polymer, a polyepoxide, and a beta-hydroxylalkylamide.
Career Highlights
William S. Ewing is associated with PPG Industries, Inc., a leading company in the coatings and specialty materials sector. His work at PPG has allowed him to develop innovative solutions that address the needs of various industries. Ewing's expertise in polymer chemistry and coating technology has positioned him as a valuable asset in his field.
Collaborations
Throughout his career, Ewing has collaborated with several professionals, including Paul H. Pettit, Jr. and Paul R. Kerr. These collaborations have contributed to the advancement of coating technologies and the successful development of new products.
Conclusion
William S. Ewing's contributions to the field of thermosetting powder coatings demonstrate his innovative spirit and dedication to improving industrial applications. His patents reflect a commitment to enhancing the performance and stability of coating compositions, making a significant impact in the industry.