Location History:
- Leverkusen-Schlebusch, DE (1977 - 1982)
- Leverkusen, DE (1981 - 1990)
Company Filing History:
Years Active: 1977-1990
Title: Hans J Meiners: Innovator in Polyamine Production
Introduction
Hans J Meiners is a notable inventor based in Leverkusen, Germany. He has made significant contributions to the field of polyamines, particularly in their production processes. With a total of 6 patents to his name, Meiners has established himself as a key figure in chemical innovation.
Latest Patents
Among his latest patents, Meiners has developed methods for producing polyamines that contain aromatically bound primary amino groups. One of his notable inventions involves a process where polyamines are produced by hydrolyzing an isocyanate group containing compound in the presence of excess water and a tertiary amine. This process is conducted at temperatures ranging from -10°C to 150°C, ensuring that the reaction mixture remains substantially homogeneous. The resulting polyamines are particularly useful in the production of polyurethanes, showcasing their industrial relevance.
Another significant patent by Meiners describes a single-stage process for producing polyamines with an NH₂-content of 0.19 to 20.3 wt%. This method also involves hydrolyzing a compound containing aromatically bound NCO-groups with excess water and a water-miscible polar solvent. The hydrolysis is performed under similar temperature conditions, ensuring a homogeneous reaction mixture. The use of tertiary amines as catalysts further enhances the efficiency of this process.
Career Highlights
Hans J Meiners is associated with Bayer Aktiengesellschaft, a leading global company in the pharmaceutical and chemical sectors. His work at Bayer has allowed him to focus on innovative solutions in chemical production, particularly in the area of polyamines.
Collaborations
Throughout his career, Meiners has collaborated with notable colleagues such as Holger Meyborg and Rudolf Fauss. These collaborations have contributed to the advancement of research and development in the field of polyamines.
Conclusion
Hans J Meiners is a distinguished inventor whose work in polyamine production has had a significant impact on the chemical industry. His innovative processes and collaborations continue to influence advancements in the field.