Andreas H Roelofs

Title: The Innovative Contributions of Andreas H. Roelofs

Introduction

Andreas H. Roelofs is a notable inventor based in Arnhem, Netherlands. He has made significant contributions to the field of polymer chemistry, particularly in the development of water-dispersible hybrid polymers. With a total of three patents to his name, Roelofs has demonstrated a commitment to innovation and excellence in his work.

Latest Patents

Roelofs' latest patents include a water-dispersible hybrid polymer that features an ethylenically unsaturated polyurethane core. This core is enhanced by an addition polymer chain shell, achieved through polymerization. The unsaturation of the polyurethane is accomplished by incorporating dimethyl-m-isopropenyl benzyl isocyanate. The acid number of the shell polymer ranges from 30 to 120 mg KOH/g. These hybrid polymers are particularly suitable for aqueous coating compositions, especially clear coats that require high acid resistance. Another patent involves a core/shell structure based on a mercapto-functionalized poly(epoxyester) core, onto which an addition polymer-based chain shell is grafted. This innovation also leads to aqueous dispersions that are ideal for clearcoats and surfacers.

Career Highlights

Throughout his career, Roelofs has worked with prominent companies such as Akzo N.V. and Akzo Nobel N.V. His experience in these organizations has allowed him to refine his expertise in polymer technology and contribute to various innovative projects.

Collaborations

Roelofs has collaborated with notable colleagues, including Roelof Buter and Aletta Wemmenhove. These partnerships have likely enriched his work and fostered a collaborative environment for innovation.

Conclusion

Andreas H. Roelofs is a distinguished inventor whose work in polymer chemistry has led to significant advancements in water-dispersible hybrid polymers. His patents reflect a deep understanding of material science and a dedication to developing high-performance coatings.