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. 07, 2021
Filed:
Dec. 29, 2020
Nutrition & Health Research Institute, Cofco Corporation, Beijing, CN;
Cofco (Jilin) Bio-chemical Technology Co., Ltd, Changchun, CN;
Jilin Cofco Biomaterial Co., Ltd, Changchun, CN;
Cofco Biotechnology Co., Ltd, Bengbu, CN;
Nutrition & Health Research Institute, COFCO Corporation, Beijing, CN;
COFCO (jilin) Bio-Chemical Technology CO., Ltd, Changchun, CN;
Jilin COFCO Biomaterial Co., Ltd, Changchun, CN;
COFCO Biotechnology Co., Ltd., Bengdu, CN;
Abstract
The present invention relates to the field of high polymer material manufacturing, and discloses an air-isolated continuous feeding system for synthesizing polylactic acid from lactide and a feeding method thereof. The continuous feeding system comprises a raw material bag/box and a raw material collector for collecting and outputting lactide, the raw material bag/box is connected with a shielding gas input pipeline, a discharge pipe is movably inserted into the raw material bag/box, a cyclone separator is connected downstream of the discharge pipe, and a solid substance outlet of the cyclone separator is connected with the raw material collector. According to the invention, deterioration of the lactide raw material incurred by moisture absorption and oxidation is avoided, and the reaction conversion ratio and final product purity are improved. The continuous feeding system is easy to operate, can save manpower and material resources, and is applicable to industrial application.