FIELD: medicine.
SUBSTANCE: invention encompasses a group of inventions: a method for producing a high molecular weight polyether carbonate, a polymerization system for the copolymerization of carbon dioxide and epoxide, a high molecular weight simple polyester carbonate. This method involves the reaction of carbon dioxide and epoxide in the presence of a double-metal cyanide catalyst (DMC catalyst) and a catalyst with formula (I), where the catalyst with formula (I) has the following structure:
The polymerization system contains a catalyst with formula (I) and a DMC catalyst. The high molecular weight polyether carbonate has the following formula:
EFFECT: development of a catalytic system for changing the amount of ether and carbonate bonds at lower pressures (< 20 bar) in order to control the properties of the resulting polymer and obtain a range of different products for different markets.
30 cl, 1 tbl, 8 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING POLYOLS | 2016 |
|
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| CATALYSTS | 2015 |
|
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|
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|
RU2706004C2 |
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| METHOD AND CATALYST SYSTEM FOR PREPARING POLYMERS AND BLOCK COPOLYMERS | 2014 |
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| MULTIBLOCK COPOLYMERS | 2016 |
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| HEMIASTERLYN DERIVATIVES AND APPLICATION THEREOF FOR AT CANCER TREATMENT | 2003 |
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| METHOD FOR PRODUCING METHYL METHACRYLATE OR METHACRYLIC ACID | 2018 |
|
RU2770310C2 |
| DEACETYLASE INHIBITORS AND THEIR APPLICATION | 2009 |
|
RU2515611C2 |
