Location History:
- Hasloch, Pflaz, DE (1976)
- Hassloch, DE (1980 - 1991)
- Hassloch/Pfalz, DE (1982 - 1992)
- Hassloch/Pflaz, DE (1985 - 1995)
Company Filing History:
23 out of 140 
1 out of 10 
1 out of 1,678 Years Active: 1976-1995
Title: The Innovative Contributions of Winfried Orth
Introduction: Winfried Orth, a renowned inventor based in Hassloch, Germany, has made significant contributions to the field of chemistry with a remarkable total of 25 patents to his name. His innovations primarily focus on the preparation of various chemical compounds, showcasing his expertise in synthetic processes and chemical reactions.
Latest Patents: Among his notable inventions, Winfried Orth holds patents for the preparation of isomer-free 2,5-dichloro-pyridine and 9,9-bis-(4-hydroxyphenyl)-fluorene. The process for preparing isomer-free 2,5-dichloropyridine involves alkoxylating 2-chloro-pyridine or 2-bromo-pyridine in the presence of a base at elevated temperatures, followed by chlorination with gaseous chlorine. This is executed in an aqueous suspension that includes an auxiliary base, a small catalyst amount, and optionally, an emulsifier. The isomer reaction mixture is treated with a Vielsmeyer-Haack reagent and subjected to water vapor distillation, leading to the crystallization of the product from an alcohol-water mixture.
In his work on 9,9-bis-(4-hydroxyphenyl)-fluorene, the method entails the condensation of fluorenone and phenol within a molar ratio of 1:4 to 1:8 at temperatures ranging from 30 to 90 degrees Celsius, using gaseous hydrogen chloride and β-mercapto-propionic acid as catalysts. The improvement within this process includes mixing the completed reaction mixture with polyalkylene glycol, followed by distilling excess phenol and retrieving the crystallized product in highly pure form.
Career Highlights: Winfried Orth has worked with several esteemed companies during his career, including Rutgerswerke Aktiengesellschaft and Degussa Aktiengesellschaft. His experience in these organizations has allowed him to refine his skills in chemical research and development, making impactful advancements in his field.
Collaborations: Throughout his professional journey, Winfried has collaborated with renowned colleagues such as Werner Fickert and Wolfgang Weiss. These partnerships have further enriched his contributions to the scientific community and industrial advancements.
Conclusion: Winfried Orth's extensive portfolio of patents and his dedication to innovation have positioned him as a significant figure in the world of chemistry. His groundbreaking work on chemical synthesis not only demonstrates his skill as an inventor but also contributes to the greater body of knowledge in the field.