This inventor holds 4 USPTO granted patents. Top assignee: Henkel Ag & Company, Kgaa. Active years: 1982-1990.
Location History:
- Dusseldorf, DE (1982)
- Duesseldorf, DE (1990)
Company Filing History:
Years Active: 1982-1990
Title: Hasso Leischner: Innovator in Chemical Processes
Introduction
Hasso Leischner is a notable inventor based in Düsseldorf, Germany. He has made significant contributions to the field of chemical processes, holding a total of 4 patents. His work focuses on innovative methods for preparing various chemical compounds, showcasing his expertise and creativity in the industry.
Latest Patents
One of Hasso Leischner's latest patents is a process for the preparation of 5-bromo-5-nitro-1,3-dioxane. This process utilizes unpurified 2-bromo-2-nitro-1,3-propanediol as the starting material, allowing for the preparation of 5-bromo-5-nitro-1,3-dioxane from 2-nitro-1,3-propanediol without the use of an organic solvent on an industrial scale. The method involves cooling a mixture of bromine and aqueous hydrogen bromide solution, followed by the careful addition of an alkali metal or alkaline-earth metal salt of 2-nitro-1,3-propanediol to maintain a maximum reaction temperature of 30 degrees Celsius. In a second stage, paraformaldehyde and sulfuric acid are added, and the organic phase is separated after the reaction.
Another significant patent by Leischner is directed towards the preparation of alkali cellulose with a low water content. This invention outlines a process where finely divided cellulose is suspended in an inert organic solvent and presteeped. The cellulose suspension is then treated with an alkali metal hydroxide/alcohol mixture and at least one aqueous alkalization solution of varying concentrations, resulting in a product with desirable properties.
Career Highlights
Hasso Leischner is currently associated with Henkel AG & Company, KGaA, a leading global company known for its innovative products and solutions. His work at Henkel has allowed him to apply his inventive skills in a practical setting, contributing to the company's reputation for excellence in chemical manufacturing.
Collaborations
Throughout his career, Hasso has collaborated with notable colleagues such as Willi Wust and Wilfried Rahse. These partnerships have fostered a creative environment that encourages the exchange of ideas and advancements in their respective fields.
Conclusion
Hasso Leischner is a distinguished inventor whose contributions