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2 478 107

(13)

(51)

IPC

C08G63/08(2006-01-01)

C08G63/82(2006-01-01)

C08G63/83(2006-01-01)

C08G63/87(2006-01-01)

(21) (22)

Application

2009148158/04, 2009-12-25

(24)

Start date

2009-12-25

(22)

Actual filing date

2009-12-25

(45)

Published

2013-03-27

(72)

Inventor

Tsejtlin Genrikh MarkovichBeksaev Sergej Gennad'Evich

(73)

Holder

Gosudarstvennoe Obrazovatel'Noe Uchrezhdenie Vysshego Professional'Nogo Obrazovanija Rossijskij Khimiko-Tekhnologicheskij Universitet Im. D.I. Mendeleeva Im. D.I. Mendeleeva)Ministerstvo Obrazovanija I Nauki Rossijskoj Federatsii

METHOD OF PRODUCING BIODEGRADABLE POLYMER Russian patent published in 2013 - IPC C08G63/08 C08G63/82 C08G63/83 C08G63/87

Abstract RU 2478107 C2

FIELD: chemistry.

SUBSTANCE: method involves polymerisation of lactide while heating in the presence of a catalyst. The catalyst consists of a mixture of magnesium methoxides and β-dicarbonyl esters of general formula , where R₁ is C₁-C₂-alkyl and R₂ is CH₂COCH₃, CH₂COOR₁ and CH₂CN. Molar ratio lactide: magnesium methoxide: ester ranges from 20000:1:4 to 10000:3:6. The method enables to obtain a biodegradable polylactide-based polymer which does not contain heavy metals and retains number-average molecular weight of not less than 60000 when heated to 180°C for 15 minutes at atmospheric pressure.

EFFECT: high efficiency of using the polymer.

1 tbl, 1 ex

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RU 2 478 107 C2

Authors

Tsejtlin Genrikh Markovich

Beksaev Sergej Gennad'Evich

Dates

2013-03-27—Published

2009-12-25—Filed