Donald E Herr

Title: The Innovative Mind of Donald E. Herr: Pioneering Advances in Photoresist Technology

Introduction: Donald E. Herr, an accomplished inventor based in Flemington, NJ, has made significant contributions to the field of photoresist technology. With a total of 2 patents to his name, Herr's innovative work continues to influence various applications in imaging and material science.

Latest Patents: Herr's latest patents are a testament to his expertise in developing advanced materials for photoimaging. One notable invention is a photoresist that is developable in an aqueous base, which utilizes a substantially ester-free, acid-functional thiol-functional resin. This resin is achieved through the reaction of an epoxy compound with thiolacetic acid, resulting in a thioacetate derivative that is subsequently hydrolyzed to produce an ester-free, β-hydroxy thiol-functional resin. This innovative resin can be modified further with materials that confer aqueous-base developability, such as cyclic anhydrides. Another significant patent involves photocurable compositions based on acid functional primary resins, which combine acid functional primary thiols devoid of hydroxy substituents in the beta position with unsaturated resins. This combination enables the production of aqueous base-developable photoimaging compositions suitable for applications like solder masks and resists.

Career Highlights: Throughout his career, Donald E. Herr has been associated with prominent companies in the field, including Macdermid Acumen, Inc. and Macdermid, Incorporated. His work in these organizations has allowed him to refine his inventions and collaborate with skilled technicians and researchers, pushing the boundaries of photoresist technology.

Collaborations: Herr has collaborated with notable professionals, including John Scott Hallock. Their joint efforts have led to advancements in the development of innovative materials that are essential in photoimaging and related industries.

Conclusion: Donald E. Herr's contributions to photoresist technology encapsulate the spirit of innovation and dedication to advancement in materials science. His patents reflect a deep understanding of chemical compounds and their applications, solidifying his status as a respected inventor in the field. As technology continues to evolve, Herr's work will undoubtedly pave the way for future breakthroughs in photoimaging and related materials.