Highly heat-resistant and highly transparent polycarbonate ester, and preparation method therefor

A technology of polycarbonate and carbonate, applied in the field of polycarbonate and its preparation, to achieve the effect of high transparency and high heat resistance
CN105392818AActive Publication Date: 2016-03-09SK CHEM CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SK CHEM CO LTD
Publication Date
2016-03-09

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Abstract

The present invention relates to: a bio-based polycarbonate ester comprising: (i) repeat unit 1 obtained from a condensation reaction of 1,4:3,6-dianhydrohexitol and carbonate; and (ii) repeat unit 2 obtained from a condensation reaction of 1,4:3,6-dianhydrohexitol and 1,4-cyclohexanedicarboxylate; and a preparation method for the bio-based polycarbonate ester, comprising the steps of: (1) preparing a compound represented by formula 3 through a trans-esterification or esterification reaction of a compound represented by formula 2 and phenol; and (2) preparing a compound comprising a repeat unit represented by formula 1 through a polycarbonate melt polycondensation reaction of the compound represented by formula 3 prepared in step (1), a compound represented by formula 4, and 1,4:3,6-dianhydrohexitol. The bio-based polycarbonate ester, according to the present invention, is capable of controlling advantages and disadvantages of physical properties obtained from each repeat unit, and has high thermal resistance and high transparency, and thus is capable of being effectively used for various uses.
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Description

technical field

[0001] The present invention relates to polycarbonate with high heat resistance and transparency and its preparation method. More specifically, the present invention relates to biomass-based polycarbonates having repeating units composed of 1,4:3,6-dianhydrohexitol with carbonate or 1,4-cyclohexanedimethyl Ester reaction obtained. Background technique

[0002] Unlike conventional resources based on the petrochemical industry, 1,4:3,6-dianhydrohexitols are biologically derived from biomass, i.e. renewable resources that contain polysaccharides as their components, such as corn, wheat, sugar, etc. base material. In particular, in the case of bioplastics containing bio-based materials, carbon dioxide (CO 2 ) can be reused for biomass growth, so bioplastics have drawn attention as CO2-reducing materials for the prevention of global warming, a serious global problem.

[0003] 1,4:3,6-dianhydrohexitol exists in three different forms of stereoisomers, which have...

Claims

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