PL400930A1 - Method for preparing poly (ester-carbonates) with alkylene carbonates - Google Patents

Method for preparing poly (ester-carbonates) with alkylene carbonates

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Publication number
PL400930A1
PL400930A1 PL400930A PL40093012A PL400930A1 PL 400930 A1 PL400930 A1 PL 400930A1 PL 400930 A PL400930 A PL 400930A PL 40093012 A PL40093012 A PL 40093012A PL 400930 A1 PL400930 A1 PL 400930A1
Authority
PL
Poland
Prior art keywords
ester
carbonates
range
dicarboxylic acid
mixture
Prior art date
Application number
PL400930A
Other languages
Polish (pl)
Other versions
PL222347B1 (en
Inventor
Gabriel Rokicki
Magdalena Mazurek
Paweł Parzuchowski
Zbigniew Florjańczyk
Original Assignee
Politechnika Warszawska
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Politechnika Warszawska filed Critical Politechnika Warszawska
Priority to PL400930A priority Critical patent/PL222347B1/en
Publication of PL400930A1 publication Critical patent/PL400930A1/en
Publication of PL222347B1 publication Critical patent/PL222347B1/en

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  • Polyesters Or Polycarbonates (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Sposób wytwarzania poli(estro-węglanów) polega na tym, że kwas dikarboksylowy lub ester dimetylowy lub dietylowy kwasu dikarboksylowego, alifatycznego lub aromatycznego lub ich mieszaniny poddaje się reakcji z ?,?-diolem lub mieszaniną dioli w stosunku molowym w granicach od 1:2,6 do 1:21,5 w obecności katalizatora transestryfikacji, w temperaturze 160-200°C, w przepływie gazu obojętnego, odbierając wodę lub metanol lub etanol jako produkt uboczny, otrzymując w jej wyniku bis(hydroksyalkilowy) ester kwasu dikarboksylowego i nieprzereagowany diol. Następnie dodaje się węglan propylenu lub węglan etylenu w stosunku molowym do estru bis(hydroksyalkilowego) kwasu dikarboksylowego jak 1:19 do 19:1 i rozpuszczalnik azeotropujący, w takiej ilości aby utrzymywać temperaturę wrzenia mieszaniny reakcyjnej w granicach 155-180°C i prowadzi reakcję odbierając azeotropowo glikol 1,2-propylenowy lub glikol etylenowy, po czym oddestylowuje się rozpuszczalnik azeotropujący, najpierw pod normalnym ciśnieniem, a następnie stopniowo obniżając ciśnienie, w czasie od 0,5 do 5 godzin, do zakresu od 0,1 do 1 mbara i podnosząc stopniowo temperaturę, w czasie od 1 do 5 godzin, do zakresu od 200 do 220°C.The method of producing poly (ester carbonates) is that the dicarboxylic acid or dimethyl or diethyl ester of dicarboxylic, aliphatic or aromatic acid or a mixture thereof is reacted with a α, β-diol or a mixture of diols in a molar ratio within the range of 1: 2 , 6 to 1: 21.5 in the presence of a transesterification catalyst at 160-200 ° C, in an inert gas flow, receiving water or methanol or ethanol as a by-product, resulting in a bis (hydroxyalkyl) dicarboxylic acid ester and unreacted diol . Then propylene carbonate or ethylene carbonate is added in a molar ratio to the dicarboxylic acid bis (hydroxyalkyl) ester as 1:19 to 19: 1 and the azeotropic solvent in such an amount as to maintain the boiling point of the reaction mixture within 155-180 ° C and reacts receiving azeotropically 1,2-propylene glycol or ethylene glycol, after which the azeotropic solvent is distilled off, first under normal pressure, and then gradually reducing the pressure over a period of 0.5 to 5 hours to a range of 0.1 to 1 mbar and gradually increasing the temperature, over a period of 1 to 5 hours, to a range of 200 to 220 ° C.

PL400930A 2012-09-26 2012-09-26 Method for preparing poly (ester-carbonates) with alkylene carbonates PL222347B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL400930A PL222347B1 (en) 2012-09-26 2012-09-26 Method for preparing poly (ester-carbonates) with alkylene carbonates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL400930A PL222347B1 (en) 2012-09-26 2012-09-26 Method for preparing poly (ester-carbonates) with alkylene carbonates

Publications (2)

Publication Number Publication Date
PL400930A1 true PL400930A1 (en) 2014-03-31
PL222347B1 PL222347B1 (en) 2016-07-29

Family

ID=50350311

Family Applications (1)

Application Number Title Priority Date Filing Date
PL400930A PL222347B1 (en) 2012-09-26 2012-09-26 Method for preparing poly (ester-carbonates) with alkylene carbonates

Country Status (1)

Country Link
PL (1) PL222347B1 (en)

Also Published As

Publication number Publication date
PL222347B1 (en) 2016-07-29

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