James T Kempthorn

Title: Innovations of James T. Kempthorn

Introduction

James T. Kempthorn is an accomplished inventor based in Cuyahoga Falls, OH (US). He has made significant contributions to the field of adhesive compositions, particularly in medical applications. With a total of 2 patents, his work showcases innovative solutions that address specific needs in the industry.

Latest Patents

Kempthorn's latest patents include an adhesive composition primarily intended for use in medical applications. This invention provides an adhesive composition for bonding a polymeric fitting to an olefin-containing component of an article used in medical applications. The adhesive composition includes an adhesive polymer system dissolved in a solvent system, which features an organic solvent with a solubility parameter ranging from about 7.5 to about 10 (cal/cm). This composition can meet the requirements for USP Class VI materials after forming a bond. In a preferred embodiment, the adhesive composition consists of a low shear mixture of an adhesive polymer system, including atactic polypropylene and low-density polyethylene, dissolved in a solvent system that blends d-limonene and a ketone such as 4-heptanone or cyclohexanone. This adhesive can bond polymeric fittings made from various materials to olefin-containing components in medical applications, such as tubing.

Another notable patent is a solvent-based adhesive composition that includes a major amount of a solvent system and a minor amount of an adhesive polymer system. The solvent system preferably contains a terpene and an aldehyde, ketone, or aromatic solvent. The adhesive polymer system includes one or a blend of polymers that partially dissolve in the solvent solution. The components of this solvent adhesive are compatible, ensuring they do not separate upon standing. This composition provides excellent adhesion between polymer articles, such as polyolefin and acrylic films, as well as good adhesion between polymeric articles and wood or metal substrates.

Career Highlights

James T. Kempthorn is currently associated with Ferro Corporation, where he continues to innovate in the field of adhesive technologies. His work has significantly impacted the development of adhesives used in various applications, particularly in the medical sector.

Collaborations

Kempthorn has collaborated with notable coworkers, including Anthony S. Scheibelhoffer and Andrew M. Rohn, Jr. These collaborations have contributed to the advancement of adhesive technologies and the successful development of innovative products.

Conclusion