Darrell J Parish

Title: Innovative Contributions of Darrell J. Parish in Polyimide Film Technology

Introduction

Darrell J. Parish, an inventive mind hailing from Circleville, OH, has made significant advancements in the field of materials science, particularly with his work on polyimide films. With a total of 12 patents to his name, he has contributed to innovations that enhance the performance of materials used in various high-tech applications.

Latest Patents

Parish's latest innovations include the development of an **antistatic aromatic polyimide film**, which integrates 14 to 50% by weight of electrically conductive silica particles. These particles are coated with a layer of antimony-containing tin oxide, yielding a film with a surface resistivity ranging from 10^4 to 10^12 ohms per square. Remarkably, this polyimide film maintains excellent antistatic properties, even after exposure to high temperatures of 400°C or above. It is particularly useful in applications that demand reliable antistatic properties, such as copier belts, space blankets, and flexible circuit substrates.

Another of his notable inventions is the **coextruded multi-layered, electrically conductive polyimide film**. This innovation displays good physical properties and uniform electrical conductivity, achieved by coextruding at least two aromatic polyamic acid solutions, one of which contains a conductive carbon filler. This results in a multilayer polyimide film that can take the form of two-layer or three-layer compositions, providing versatility for a wide range of applications.

Career Highlights

Darrell J. Parish is currently associated with E.I. du Pont de Nemours and Company, a leader in material science and chemical manufacturing. Throughout his career, Parish has been at the forefront of creating solutions that meet the demands of emerging technologies, solidifying his reputation as a prominent inventor in his field.

Collaborations

Parish’s journey in innovation has involved collaboration with esteemed professionals like Morton H. Katz and James P. Ochsner. These partnerships have enhanced the breadth and depth of his research and development initiatives, leading to breakthroughs in the applications of polyimide films.

Conclusion

With a strong portfolio of patents and a commitment to advancing material science, Darrell J. Parish's work continues to have a lasting impact on industries reliant on innovative film technologies. His developments not only push the boundaries of performance but also pave the way for future advancements in the realm of conductive materials.