Biodegradable polyester and use thereof

US11149113B2 · kind B2 · utility

Assignee

• KINGFA SCI. & TECH. CO., LTD. · CN

Inventors

• Weiwei WANG · Beijing, CN
• Zhimin Yuan · Tangxia, CN
• Tongmin Cai · Tangxia, CN
• Xianbo Huang · Tangxia, CN
• Xiangbin Zeng · Longbeilingcun, CN
• Nanbiao YE · 流花街道, CN
• Zhilong Guo · 流花街道, CN
• Changli Lu · Tangxia, CN

Key dates

• Filing date: Jun 26, 2018
• Grant date: Oct 19, 2021
• Expiry date: Jul 26, 2038

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08J2367/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A biodegradable polyester and use thereof includes components: A) acid components containing following repeating units: 40 to 48 mol % of terephthalic acid A1; 38.5 to 50 mol % of sebacic acid A2; and 2 to 20 mol % of an aliphatic dibasic acid A3 with a carbon chain length of 6 or less; B) butanediol. In the case of low content of the terephthalic acid unit, by introducing the aliphatic dibasic acid unit with the carbon chain length of 6 or less, mechanical properties of the material can be significantly improved, and the mechanical property retention is better especially when stored in a humid environment.