Diandre Armstead

Title: Diandre Armstead: Innovator in Polyester Technology

Introduction

Diandre Armstead is a prominent inventor based in Philadelphia, PA (US). He has made significant contributions to the field of polyester technology, holding a total of 6 patents. His innovative work focuses on the preparation of unsaturated polyesters and polyetherester resins, which have important applications in various industries.

Latest Patents

Armstead's latest patents include a process for making unsaturated polyesters from 2-methyl-1,3-propanediol (MPD). This process involves reacting one equivalent of an aromatic diacid with about two equivalents of MPD to produce an ester diol. The ester diol is then reacted with maleic anhydride to create a polyester with a fumarate/maleate ratio of 90/10 or greater. Another notable patent details a process for making polyetherester resins that have a high aromatic diester content. This process allows for the preparation of unsaturated polyetherester resins with high levels of terephthalate repeating units, which are useful for creating thermoset resins with excellent mechanical and physical properties.

Career Highlights

Diandre Armstead is currently employed at Arco Chemical Technology, L.P. His work at the company has been instrumental in advancing polyester technology. His innovative approaches have led to the development of new glycol esters based on 2-methyl-1,3-propanediol, as well as polyester resins and thermosets derived from these glycol esters.

Collaborations

Armstead has collaborated with notable coworkers, including Roger A. Grey and Laurel E. Schock. These collaborations have contributed to the successful development of his patented technologies.

Conclusion

Diandre Armstead is a key figure in the field of polyester technology, with a strong portfolio of patents that showcase his innovative spirit. His contributions continue to influence the industry and pave the way for future advancements.