Company Filing History:
1 out of 125 
1 out of 1 Years Active: 2020
Title: Han Shi - Innovator in Reactive Extrusion Copolymerization
Introduction
Han Shi is a notable inventor based in Shanghai, China. He has made significant contributions to the field of polymer science, particularly through his innovative methods in reactive extrusion copolymerization.
Latest Patents
Han Shi holds a patent for a method of reactive extrusion copolymerization of vinyl monomers. This method involves several key steps: first, feeding vinyl monomer or at least one vinyl monomer along with an initiator into the first screw of a twin-screw extruder, and modified resin into the subsequent screw section. Next, the monomer is fed into the screw segment after the auto-acceleration zone, with the initiator being added according to the temperature of the barrel and micro/nano inorganic modified fillers after the half-life period of the initiator. The process continues with the addition of an antioxidant and anti-UV agent at the end of polymerization, followed by the removal of unpolymerized monomer and by-products through devolatilization of the screw segment. Ultimately, this method allows for the production of vinyl copolymer resin with an anticipated molecular weight ranging from 5×10² to 6×10⁵, overcoming existing defects of free radical polymerization by utilizing reactive extrusion technology.
Career Highlights
Throughout his career, Han Shi has worked with esteemed institutions such as East China University of Science and Technology and Shanghai Fuyuan Rubber and Plastic Technology Ltd. His work has significantly advanced the understanding and application of polymerization techniques.
Collaborations
Han Shi has collaborated with notable colleagues, including Anna Zheng and Yong Guan, contributing to various projects and research initiatives in the field of polymer science.
Conclusion
Han Shi's innovative approach to reactive extrusion copolymerization has paved the way for advancements in polymer technology. His contributions are vital for the development of high-performance materials in various applications.