Biodegradable polyester composition

US10364320B2 · kind B2 · utility

Assignee

• Hongmei Yang · CN

Inventors

• Changli Lu · Tangxia, CN
• Zhimin Yuan · Tangxia, CN
• Tongmin Cai · Tangxia, CN
• Xianbo Huang · Tangxia, CN
• Xiangbin Zeng · Longbeilingcun, CN
• Jian Jiao · Tangxia, CN
• Renxu Yuan · Tangxia, CN
• Yuke Zhong · Tangxia, CN
• Kai Xiong · 流花街道, CN
• Hui Yang · Cincinnati, US
• Kaijin Mai · Tangxia, CN
• Xueteng Dong · Tangxia, CN

Key dates

• Filing date: Dec 15, 2016
• Grant date: Jul 30, 2019
• Expiry date: Dec 15, 2036

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08L2205/03
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A biodegradable polyester composition based on a total weight of the biodegradable polyester composition, including a weight content of cyclopentanone which is 0.5 ppm-85 ppm is provided. The cyclopentanone is added into the composition and controlling the content of cyclopentanone in the composition within a range of 0.5 ppm-85 ppm to realize a lubrication degree of a film of biodegradable polyester during a blow molding process. When a velocity of film blowing is 176 Kg/h, a range of a film thickness is less than 0.2 μm and a relative deviation of the film thickness is less than 1%.