This inventor holds 2 USPTO granted patents and 2 published patent applications. Top assignees: Wanhua Chemical Group Co., Ltd., Wanhua Chemical (Ningbo) Co., Ltd.. Active years: 2026.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile
Company Filing History:
2 out of 4 
1 out of 1 Years Active: 2026
Title: Wei Liu - Innovator in Polyisocyanate Compositions
Introduction
Wei Liu is a notable inventor based in Yantai, China. He has made significant contributions to the field of isocyanate derivatives, particularly through his innovative patents. With a total of 2 patents, Liu's work focuses on enhancing the stability and performance of polyisocyanate compositions.
Latest Patents
Wei Liu's latest patents include a storage-stable polyisocyanate composition and a preparation method therefor. This invention pertains to the technical field of preparing isocyanate derivatives. The method involves subjecting an isocyanate monomer to a polymerization reaction in the presence of a catalyst system. The reaction is terminated after reaching a suitable conversion rate to obtain a polyisocyanate reaction solution. Heat treatment is then performed on this solution to create a heat-treated polyisocyanate mixture, ensuring minimal viscosity increase when stored at elevated temperatures.
Another significant patent by Liu is the xylylene diisocyanate composition, which includes xylylene diisocyanate and a specific compound that enhances discoloration resistance. This composition effectively inhibits yellowing and white turbidity in resins prepared from it.
Career Highlights
Wei Liu has worked with prominent companies in the chemical industry, including Wanhua Chemical Group Co., Ltd. and Wanhua Chemical (Ningbo) Co., Ltd. His experience in these organizations has contributed to his expertise in developing innovative chemical compositions.
Collaborations
Throughout his career, Liu has collaborated with notable colleagues such as Yonghua Shang and Yuan Li. These partnerships have likely facilitated the exchange of ideas and advancements in their respective fields.
Conclusion
Wei Liu's contributions to the field of polyisocyanate compositions demonstrate his innovative spirit and commitment to enhancing chemical stability and performance. His patents reflect a deep understanding of isocyanate derivatives and their applications in various industries.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile