Location History:
- Minneapolis, MN (US) (1992 - 1994)
- Richfield, MN (US) (1999 - 2001)
Company Filing History:
Years Active: 1992-2001
Title: Innovations of Matthew L Iwen in Lactide Production
Introduction
Matthew L Iwen is a notable inventor based in Minneapolis, MN (US), recognized for his contributions to the field of lactide and lactide polymers. With a total of 9 patents to his name, Iwen has made significant strides in developing processes that enhance the production of these important materials.
Latest Patents
Iwen's latest patents include a continuous process for the manufacture of lactide and lactide polymers. This innovative process allows for the continuous production of substantially purified lactide and lactide polymers from lactic acid or its esters. The method involves forming crude polylactic acid, preferably in the presence of a catalyst, to create a condensation reaction by-product and polylactic acid. The polylactic acid is then depolymerized in a lactide reactor to produce crude lactide, which is subsequently purified through a distillation system. The purified lactide is then polymerized to form lactide polymers.
Another significant patent focuses on the continuous production of polylactide polymers with controlled optical purity. This process incorporates the removal of water or a solvent carrier to concentrate the lactic acid feed, followed by polymerization to create a low-molecular-weight prepolymer. This prepolymer is then fed into a reactor where a catalyst is added to facilitate the generation of lactide. The generated lactide is continuously fed to a distillation system, where water and other impurities are removed, resulting in purified liquid lactide that is directly used in the polymerization process.
Career Highlights
Matthew L Iwen is currently employed at Cargill Inc., where he continues to innovate and develop new processes in the field of lactide production. His work has contributed to advancements in sustainable materials and has implications for various industries, including packaging and biomedical applications.
Collaborations
Iwen has collaborated with notable colleagues such as Jeffrey John Kolstad and Patrick R Gruber, enhancing the research and development efforts within his field.
Conclusion
Matthew L Iwen's innovative work in the production of lactide and lactide polymers showcases his commitment to advancing sustainable materials. His patents reflect a deep understanding of chemical processes and a dedication to improving manufacturing techniques.