Company Filing History:
Years Active: 1978-1980
Title: Dieter Frietag: Innovator in Thermoplastic Polycarbonates
Introduction
Dieter Frietag, an accomplished inventor based in Krefeld, Germany, has made significant contributions to the field of polymer chemistry. With two patents to his name, he has focused on enhancing the properties of thermoplastic polycarbonates, positioning himself as a key player in modern material science.
Latest Patents
Dieter's latest innovations include two notable patents:
1. **Branched, High-Molecular Weight Thermoplastic Polycarbonates** - This invention relates to a novel process for preparing branched, thermoplastic, high-molecular weight polycarbonates. By incorporating 3,3-bis-(4-hydroxyaryl)-oxindoles as branching agents, this process yields polycarbonates with improved properties. The resultant polycarbonates exhibit enhanced performance in various applications.
2. **1,1,3,4,6-Pentamethyl-3-(3,5-Dimethyl-4-Hydroxyphenyl)-Indan-5-Ol** - This invention focuses on aromatic thermoplastic polycarbonates containing structural units derived from 1,1,3,4,6-pentamethyl-3-(3,5-dimethyl-4-hydroxyphenyl)-indan-5-ol. The polymers can be homopolymers or copolymers with other aromatic dihydroxy compounds, providing versatility in usage. These materials may be utilized directly or blended with other thermoplastic resins and are suitable for applications such as coatings that may undergo cross-linking through heat treatment or radiation.
Career Highlights
Dieter Frietag is associated with Bayer Aktiengesellschaft, an esteemed company renowned for its commitment to innovation and research in the chemical sector. His work focuses on developing new polymer formulations that enhance the functionality and application of thermoplastic materials.
Collaborations
Throughout his career, Dieter has collaborated with notable colleagues, including Karsten-Josef Idel and Werner Nouvertne. Their collective expertise in polymer science has contributed to the advancement of innovative materials that are essential in various industrial applications.
Conclusion
Dieter Frietag's contributions to the field of thermoplastic polycarbonates exemplify the impact that dedicated inventors can have on material science and industry. His innovative patents not only enhance existing technologies but also pave the way for future advancements in the field. His work at Bayer Aktiengesellschaft continues to inspire new developments that benefit various sectors worldwide.