Biodegradable composite, the preparation process thereof, and a disposable article made therefrom

US8859690B2 · kind B2 · utility

Assignees

• CHINA PETROLEUM & CHEMICAL CORPORATION · CN
• BEIJING RESEARCH INSTITUTE OF CHEMICAL INDUSTRY, CHINA PETROLEUM & CHEMICAL CORPORATION · CN

Inventors

• Guixiang Zhu · Beijing, CN
• Wei Zhang · Lianyungang, CN
• Ling Han · Beijing, CN
• Ning XU · Beijing, CN
• Yi Zou · Portland, US
• Wenxi Ji · Beijing, CN

Key dates

• Filing date: Jun 22, 2012
• Grant date: Oct 14, 2014
• Expiry date: Jul 9, 2032

Classification

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

Abstract

The present invention relates to a biodegradable composite and its preparation process, which composite is prepared by mixing feed stocks comprising a polylactic acid, an aliphatic-aromatic copolyester A, an aliphatic-aromatic copolyester B and an organic peroxide at a temperature between about 100 and about 200° C. The present invention also relates to a disposable article, which is prepared from said biodegradable composite.