The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 20, 2022
Filed:
Jun. 26, 2018
Kingfa Sci. & Tech. Co., Ltd., Guangzhou, CN;
Zhuhai Wango Chemical Co., Ltd., Zhuhai, CN;
Changli Lu, Guangzhou, CN;
Zhimin Yuan, Guangzhou, CN;
Tongmin Cai, Guangzhou, CN;
Xianbo Huang, Guangzhou, CN;
Xiangbin Zeng, Guangzhou, CN;
Jian Jiao, Guangzhou, CN;
Kai Xiong, Guangzhou, CN;
Hui Yang, Guangzhou, CN;
Kaijin Mai, Guangzhou, CN;
Xueteng Dong, Guangzhou, CN;
Shihua He, Guangzhou, CN;
KINGFA SCI. & TECH. CO., LTD., Guangdong, CN;
ZHUHAI WANGO CHEMICAL CO., LTD., Guangdong, CN;
Abstract
The present invention discloses a polylactic acid composite and use thereof. The polylactic acid composite includes the following components: (A) 89 to 98 parts by weight of polylactic acid; (B) 1 to 4 parts by weight of talcum powder; and (C) 1 to 7 parts by weight of a plasticizer. In the component (A), the polylactic acid has a polydispersity index P satisfying the following relationship: 1.55≤P≤2.02. In the component (B), the talcum powder has a particle size Dsatisfying: 1 μm≤D≤2.6 μm. In the component (C), the plasticizer has a relative molecular weight M satisfying: 180≤M≤670. Through research, the present invention has unexpectedly discovered that by using the polylactic acid having the polydispersity index P satisfying the relationship 1.55≤P≤2.02 as a matrix, adding a specific range of content of ultrafine talcum powder as a nucleating agent, and selecting the plasticizer of a specific molecular weight as a crystallization promotion agent, the prepared polylactic acid composite has a light transmittance T≥80%, a haze H≤40%, and a heat deflection temperature HDT≥90° C., having significantly improved heat resistance and transparency.