This inventor holds 3 USPTO granted patents and 1 EPO patent. Top assignee: Stepan Company. Active years: 2013-2015.
Location History:
- Columbus, OH (US) (2013 - 2014)
- Buffalo Grove, IL (US) (2015)
Company Filing History:
Years Active: 2013-2015
Title: Innovations of Daniel J Dershowitz in Thermoplastic Polyesters
Introduction
Daniel J Dershowitz is an accomplished inventor based in Columbus, OH (US). He has made significant contributions to the field of thermoplastic polyesters, holding a total of 3 patents. His work focuses on the preparation of antiplasticizers, which are crucial for enhancing the properties of thermoplastic materials.
Latest Patents
One of his latest patents involves the preparation of bis(aryloxyalkyl)terephthalates, which serve as antiplasticizers for thermoplastic polyesters. The process begins with the reaction of dimethyl terephthalate with an excess of aryloxyalkanol in the presence of a condensation catalyst. This reaction produces an intermediate mixture that includes bis(aryloxyalkyl)terephthalate, mono(aryloxyalkyl)terephthalate, and unreacted aryloxyalkanol. The mixture is then subjected to reduced pressure while unreacted aryloxyalkanol is removed, ensuring that the mono-ester content is reduced to less than 1 mole % based on the combined amounts of mono- and bis-esters. Both steps are performed in the absence of oxygen to maintain the integrity of the reaction. The final product is a purified bis(aryloxyalkyl)terephthalate with an overall purity of at least 98 mole % and a yellowness index of less than 10. This careful control over the process conditions allows for high yields of bis(aryloxyalkyl)terephthalates with desirable attributes.
Career Highlights
Daniel J Dershowitz is currently associated with Stepan Company, where he continues to innovate in the field of polymer chemistry. His expertise in the preparation of antiplasticizers has positioned him as a key contributor to advancements in thermoplastic materials.
Collaborations
He has collaborated with notable colleagues, including Michael Edward O'Brien and Timothy L Lambert, to further enhance the research and development efforts within his field.
Conclusion
Daniel J Dershowitz's contributions to the field of thermoplastic polyesters through his innovative patents demonstrate his commitment to advancing material science. His work not only improves the properties of thermoplastic materials but also sets a foundation for future innovations in the industry.