Erhard Worfel

Title: The Innovative Contributions of Erhard Worfel

Introduction

Erhard Worfel is a notable inventor based in Hattersheim, Germany. He has made significant contributions to the field of azo pigments, holding a total of four patents. His work has advanced the understanding and application of azo pigments in various industries.

Latest Patents

Worfel's latest patents focus on the process of obtaining azo pigments through diazotizing in dipolar aprotic organic solvents. The first patent describes a method where azo pigments are produced by diazotizing a diazotizable aromatic amine without solubilizing groups in anhydrous dipolar aprotic water-miscible solvents. This process utilizes a stoichiometric amount or a small excess of nitrosylsulfuric acid or nitrosyl chloride. The resulting azo pigments exhibit excellent purity, grain softness, and a narrow range of particle size distribution. They also demonstrate outstanding dispersibility in plastic materials and color lacquers, along with high gloss and excellent opacity.

The second patent reiterates this innovative process, emphasizing the advantageous properties of the azo pigments that cannot be achieved by other methods. The homogeneous solution process yields pigments that are highly desirable in various applications.

Career Highlights

Erhard Worfel has been associated with Hoechst Aktiengesellschaft, a prominent company in the chemical industry. His work there has allowed him to explore and develop new methods for pigment production, contributing to the company's reputation for innovation.

Collaborations

Worfel has collaborated with notable coworkers such as Josef Landler and Klaus Hunger. Their combined expertise has furthered the development of advanced pigment technologies.

Conclusion

Erhard Worfel's contributions to the field of azo pigments through his innovative patents have significantly impacted the industry. His work continues to influence the production and application of high-quality pigments in various materials.