METHOD OF PRODUCING POLYLACTIDES Russian patent published in 2020 - IPC C08G63/08 C08G63/85 

Abstract RU 2726362 C1

FIELD: chemistry; manufacturing technology.

SUBSTANCE: invention relates to a method of producing polylactides which can be used in various fields of science, engineering, medicine and the national economy. Method involves polymerisation of lactides with opening of a cycle (ROP) in a melt in the presence of a ROP catalyst and a cocatalyst. Method is carried out in the temperature range of 100–185 °C with thermal provision of the temperature mode in the reaction space by microwave (super-high-frequency) irradiation of the reaction space. ROP catalyst used is organometallic compound 1-hydroxygermatrane monohydrate, and the cocatalyst used is lauryl alcohol.

EFFECT: method provides high efficiency of the end product due to reduction of polymerisation time, high thermal efficiency of the process, as well as obtaining a less toxic product.

4 cl, 1 tbl, 4 ex

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RU 2 726 362 C1

Authors

Kochurkov Andrej Aleksandrovich

Lakhtin Valentin Georgievich

Sharapov Viktor Alekseevich

Storozhenko Pavel Arkadevich

Dates

2020-07-13Published

2019-11-12Filed