Yaoyun Guo

Title: Yaoyun Guo: Inventor in Polyisocyanate Composition Technology.

Introduction

Yaoyun Guo is an inventor associated with Yantai, China. His work includes a patent concerning polyisocyanate compositions and their preparation and application. The supplied information lists 1 patent and identifies Wanhua Chemical Group Co., Ltd. and Wanhua Chemical (Ningbo) Co., Ltd. among the companies he has worked with.

Latest Patents

Guo’s listed patent is “Polyisocyanate Composition, Preparation Method Therefor and Application Thereof.” It describes a composition in which the difference between the mass content of alkaline-hydrolyzed chlorine and water-hydrolyzed chlorine is 0.1 to 100 parts per billion by mass (ppm).

The patent defines alkaline-hydrolyzed chlorine as the halogen released under alkaline conditions and/or at temperatures of 100°C or higher, calculated using the relative atomic mass of chlorine. According to the supplied description, chlorine released during a localized severe exotherm can inhibit catalysts in the overheated area. This may reduce excessive local reactivity and help prevent turbidity in polyurethane synthetic emulsions, supporting improved light transmittance and yellowing resistance in polyurethane products.

Career Highlights

The available career information connects Guo with Wanhua Chemical Group Co., Ltd. and Wanhua Chemical (Ningbo) Co., Ltd. His listed patent focuses on controlling chlorine content in polyisocyanate compositions, with the stated aim of improving the processing behavior and optical qualities of polyurethane products.

Collaborations

Yong Yu and Xuelei Cui are identified as Guo’s coworkers. The supplied information does not specify their roles in the patent or describe particular collaborative projects.

Conclusion

Yaoyun Guo’s listed invention addresses chlorine content in polyisocyanate compositions and its potential effects on polyurethane processing and product quality.