Polyethylene material and application thereof

US10899858B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• ZHEJIANG UNIVERSITY · CN

Inventors

• Jingdai Wang · Zhejiang, CN
• Wenqing Wu · San Diego, US
• Yongrong Yang · Zhejiang, CN
• Guodong Han · Tianjin, CN
• Xiaofei Wang · Cedar Grove, US
• Yuhui Cui · Tianjin, CN
• Binbo Jiang · Zhejiang, CN
• Zhengliang Huang · Hangzhou City, CN
• Jingyuan Sun · Zhejiang, CN
• Xiaobo Hu · Granger, US
• Xiaoqiang Fan · Zhejiang, CN
• Zuwei Liao · Zhejiang, CN
• Yao YANG · Ithaca, US

Key dates

• Filing date: Apr 22, 2016
• Grant date: Jan 26, 2021
• Expiry date: Jun 23, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2203/162
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Provided is a polyethylene material and application thereof. A density distribution of the polyethylene material is in a range of 0.880 g/cm3-0.960 g/cm3. An amount of a fraction at a temperature of 40° C. obtained by conducting temperature rising elution fractionation on the polyethylene material is in a range of 9.0 wt %-40.0 wt %, preferably in a range of 10.0 wt %-25.0 wt %, more preferably in a range of 9.9 wt %-20.0 wt %. A melting temperature of the polyethylene material is 110° C.-135° C., preferably 116° C.-130° C. The polyethylene material provided by the present application has distinctly improved amount of medium/low-molecular-weight fractions and high-degree-branching fractions, as well as relatively high-molecular-weight fractions which are highly branched. The polyethylene material thus has a relative high melting temperature.