David S Bignell

Title: Innovations of David S Bignell in Polymer Technology

Introduction

David S Bignell is a notable inventor based in Berkshire, GB. He has made significant contributions to the field of polymer technology, particularly in the development of addition polymer particles. With a total of two patents to his name, Bignell's work has implications for various applications, including coating compositions.

Latest Patents

Bignell's latest patents focus on very small (100 nanometers maximum) non-ionically-stabilized core-sheath addition polymer particles. In these innovations, the core is composed of addition polymer, while the sheath consists of polyoxyalkylene chains. A key feature of these particles is that at least a portion of the chains are bonded to the core, ensuring a mass ratio of core to sheath ranging from 98:2 to 60:40. The preparation of these particles involves polymerization in aqueous media initiated at temperatures below 40 degrees Celsius. A preferred embodiment utilizes a seed-feed process, resulting in dispersions that exhibit excellent rheological characteristics, making them useful as film-formers in coating compositions.

Career Highlights

David S Bignell is associated with Ici Australia Operations Proprietary Limited, where he has been instrumental in advancing polymer technology. His expertise in the field has led to the development of innovative materials that enhance product performance.

Collaborations

Bignell has collaborated with notable colleagues, including Geoffrey B Anderson and Iain B Cook. These partnerships have contributed to the successful development of his patented technologies.

Conclusion

David S Bignell's contributions to polymer technology through his innovative patents highlight his role as a significant inventor in the field. His work continues to influence the development of advanced materials for various applications.