J Urgen Seifert

Title: J Urgen Seifert: Inventor in Cellulose Processing

Introduction

J Urgen Seifert is an inventor associated with Grosswallstadt, Germany, and Akzo Nobel N.V. His recorded patent work concerns an environmentally friendly process for preparing level-off degree of polymerization (DP) cellulose, a material used to produce microcrystalline cellulose.

Latest Patents

The provided information lists one patent for Seifert: “Process for the Preparation of Level-Off DP Cellulose.” The invention partially hydrolyzes cellulose in a pressurized reactor using water and oxygen and/or carbon dioxide. The process operates at a gas pressure of 0.1 to 60 bar, measured at 20°C, and a temperature of 100°C to 200°C, continuing until the cellulose reaches its level-off DP. Preferred conditions are a pressure of 0.5 to 30 bar and a temperature of 140°C to 180°C. The resulting cellulose can be disaggregated in an aqueous suspension using mechanical force to produce microcrystalline cellulose. Seifert’s listed portfolio comprises 1 patent.

Career Highlights

Seifert’s documented patent contribution focuses on cellulose processing. The patent describes partial hydrolysis conditions intended to prepare level-off DP cellulose through a process characterized in the supplied information as environmentally friendly.

Collaborations

The supplied information identifies Manfred J Bergfeld as Seifert’s coworker and associates Seifert with Akzo Nobel N.V. It does not specify the coworker’s role in the patent or describe the nature of their collaboration.

Conclusion

J Urgen Seifert’s recorded invention addresses the preparation of level-off DP cellulose for conversion into microcrystalline cellulose, highlighting his contribution to cellulose-processing technology.