Qing Yang

Title: Qing Yang - Innovator in Ethylene-Based Polymers

Introduction

Qing Yang is a talented inventor based in Bartlesville, OK (US). She is currently employed at Chevron Phillips Chemical Company LP. Although she has not yet been granted any patents, her work in the field of ethylene-based polymers is noteworthy.

Latest Patent Applications

Qing Yang's latest patent application is titled "Dual Metallocene Bimodal HDPE Resins with Improved Stress Crack Resistance." This application discloses ethylene-based polymers characterized by a density ranging from 0.94 to 0.96 g/cm, a Mn from 5,000 to 14,000 g/mol, and a ratio of Mw/Mn from 18 to 40. The polymers also include specific parameters such as a PENT value at 2.4 MPa of at least 11,500 hr and/or a W90 from 7.5 to 15 wt. %. Additional ethylene polymers may share the same density, Mn, and Mw/Mn values, along with a relaxation time from 0.5 to 3.5 sec, a CY-a parameter from 0.48 to 0.68, and a HLMI from 5 to 11 g/10 min. Furthermore, the viscosity at HLMI ranges from 3,000 to 7,500 Pa-sec, and the polymers consist of a higher molecular weight component (HMW) and a lower molecular weight (LMW) component, with a specific ratio of the number of SCBs at Mp of the HMW component to the number of SCBs at Mp of the LMW component from 3.5 to 8.

Conclusion

Qing Yang is making significant contributions to the field of polymer science through her innovative research and applications. Her work at Chevron Phillips Chemical Company LP showcases her dedication to advancing the technology of ethylene-based polymers.