Polyethylene films and methods of making the same

US11441023B2 · kind B2 · utility

Assignee

• ExxonMobil Chemical Patents Inc. · US

Inventors

• Keran Chen · Shanghai, CN
• Yong Yang · Kingwood, US
• Ling Ge · Shanghai, CN
• Xiao-Chuan Wang · Shanghai, CN
• Zhen Zhu · Lake Forest, US
• LeiLei Ma · Shanghai, CN
• Xin Hao Cai · Shanghai, CN
• Gregory K. Hall · Menasha, US
• Caiguo Gong · Pearland, US
• Jean-Marc C. De Koninck · Hamme-Mille, BE
• Robert J. Wittenbrink · Baton Rouge, US

Key dates

• Filing date: Apr 27, 2018
• Grant date: Sep 13, 2022
• Expiry date: Jul 28, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2203/162
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A film, preferably, a multi-layered film, including a polymer composition, wherein the polymer composition includes: within a range from 1 wt % to 25 wt % of a cyclic olefin copolymer based on the weight of the polymer composition, and within a range from 75 wt % to 99 wt % (the remainder of material) of a polyethylene based on the weight of the polymer composition, wherein the cyclic olefin copolymer has a glass transition temperature (T.sub.g) of at least 80.degree. C. The films may be used in shrink packaging application.