Sarah Elizabeth Caldwell

Title: Sarah Elizabeth Caldwell: Innovator in Polyester Technology

Introduction

Sarah Elizabeth Caldwell is a notable inventor based in Spartanburg, SC (US). She has made significant contributions to the field of polyester technology, holding 2 patents that showcase her innovative spirit and technical expertise.

Latest Patents

Caldwell's latest patents include a composition of polyester with high carboxyl end groups and methods for making it. This invention relates to a polyester or copolyester composition containing a substituted cyclic anhydride, which has a carboxyl end group of greater or equal to 25 mmol/kg. The method involves late injection of the substituted cyclic anhydride at the end of polycondensation or adding it to the preform injection molding machine before stretch blow molding a container. Another significant patent is for polyester resins containing silica, which are designed to reduce stickiness in beverage containers compared to those made from the same resin without silica.

Career Highlights

Throughout her career, Caldwell has worked with prominent companies such as Arteva North America S.a.r.l. and Invista North America S.a.r.l. Her experience in these organizations has allowed her to develop and refine her innovative ideas in polyester technology.

Collaborations

Caldwell has collaborated with talented individuals in her field, including Jennifer King and John M. Woodward. These partnerships have contributed to her success and the advancement of her inventions.

Conclusion

Sarah Elizabeth Caldwell is a pioneering inventor whose work in polyester technology has led to valuable patents and advancements in the industry. Her contributions continue to influence the development of innovative materials.