Random copolymer of polycarbonate and aromatic polyester based on 1,4;3,6-diglycidyl hexanehexol and preparation method and application thereof

A technology of random copolymer and aromatic polyester, which is applied to the random copolymer of polycarbonate and aromatic polyester based on 1,4;3,6-dihexylhexyl, its preparation method and application It can solve the problems of high melt viscosity of resin, polycarbonate can not meet industrial use, difficult to mold, etc.

Inactive Publication Date: 2014-09-10
INST OF CHEM CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The polycarbonates of this type reported in the literature at present all cannot satisfy industrial use.
In addition, the British patent [1079686] and the literature [Macromolecules 1996,29,8077-8082] both report that when the molecular weight is increased, the melt viscosity of the resin will become too high and it will become difficult to mold. Therefore, it is necessary to Modification of 1,4;3,6-dihexylhexyl polycarbonate

Method used

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  • Random copolymer of polycarbonate and aromatic polyester based on 1,4;3,6-diglycidyl hexanehexol and preparation method and application thereof
  • Random copolymer of polycarbonate and aromatic polyester based on 1,4;3,6-diglycidyl hexanehexol and preparation method and application thereof
  • Random copolymer of polycarbonate and aromatic polyester based on 1,4;3,6-diglycidyl hexanehexol and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Embodiment 1. The random copolymer of isosorbide polycarbonate and aromatic polyester is prepared by two pots

[0059] (1) At room temperature, in a 250mL glass flask, add 26.3g (0.18mol) isosorbide, 32.4g (0.36mol) dimethyl carbonate and 0.00026g transesterification catalyst stannous octoate under nitrogen atmosphere, (iso The molar ratio of sorbitol to dimethyl carbonate is 1:2), stirred and reacted at 60°C for 3 hours, then gradually raised the temperature to 220°C, distilled out the by-product methanol produced by the reaction, and stopped the reaction until the reaction was complete. Obtain the prepolymer of isosorbide polycarbonate;

[0060] (2) In a 250mL glass flask, add 3.3g (0.02mol) of terephthalic acid, 3.6g (0.04mol) of 1,4-butanediol and 0.002g of esterification catalyst tetrapropoxytitanium under a nitrogen atmosphere (The molar ratio of terephthalic acid to 1,4-butanediol is 1:2), start stirring at 160°C, gradually raise the temperature to 240°C, and re...

Embodiment 2

[0063] Embodiment 2. The random copolymer of isosorbide polycarbonate and aromatic polyester prepared by two pots

[0064] (1) At room temperature, in a 250mL glass flask, add 28.9g (0.198mol) isosorbide, 89.1g (0.99mol) dimethyl carbonate and 0.02g transesterification catalyst Na 2 CO 3 , (the molar ratio of isosorbide to dimethyl carbonate is 1:5), stirred and reacted at 120°C for 6 hours, then gradually raised the temperature to 220°C, distilled out the by-product methanol produced by the reaction until the reaction was complete, Stop reaction, obtain the prepolymer of isosorbide polycarbonate;

[0065] (2) In a 50mL glass flask, add 0.4g (0.002mol) dimethyl terephthalate, 3.6g (0.04mol) 1,4-butanediol and 0.0001g of zinc acetate (terephthalic acid) under a nitrogen atmosphere The molar ratio of dimethyl diformate to 1,4-butanediol is 1:20), start stirring at 160°C, gradually raise the temperature to 240°C, distill out the by-product methanol produced by the reaction unti...

Embodiment 3

[0067] Embodiment 3. The random copolymer of isoidide polycarbonate and aromatic polyester is prepared by two pots

[0068] (1) At room temperature, in a 250mL glass flask, add 23.4g (0.14mol) isoidide alcohol, 132g (1.12mol) diethyl carbonate and 0.005g transesterification catalyst lithium acetylacetonate (isoaidide) under nitrogen atmosphere The molar ratio of decyl alcohol to diethyl carbonate is 1:8), stirring and reacting at 100°C for 8 hours, gradually raising the temperature to 200°C, distilling out the by-product ethanol produced by the reaction until the reaction is complete, stopping the reaction to obtain Prepolymers of isoidide polycarbonate;

[0069](2) At room temperature, in a 250mL glass flask, add 11.6g (0.06mol) of dimethyl isophthalate, 62.3g (0.30mol) of 1,5-pentanediol and 0.01g of zinc acetate under a nitrogen atmosphere (The molar ratio of dimethyl isophthalate to 1,5-pentanediol is 1:5), start stirring at 150°C, gradually raise the temperature to 230°C...

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Abstract

The invention relates to a random copolymer of polycarbonate and aromatic polyester based on 1,4;3,6-diglycidyl hexanehexol and a preparation method and an application of the random copolymer. The random copolymer is prepared by taking 1,4;3,6-diglycidyl hexanehexol, carbonic acid diester, aromatic binary acid (or ester of aromatic binary acid) and aliphatic dihydric alcohol as monomers through a one-pot method or two-pot method in the presence of inert gases. Compared with homopolymerized carbonate, the random copolymer is relatively greatly improved in molecular weight, mechanical property, processing capability, thermal stability and chemical stability, and meanwhile relatively high glass-transition temperature is maintained. The number-average molecular weight of the random copolymer is 3.0*10<3>-4.0*10<5>, the glass-transition temperature is 90-180 DEG C, and the random copolymer is excellent in comprehensive property and can be used for preparing polymer blends, polymer alloy, heat-resisting containers, bottles, films, fibers, sheets, optical products and the like.

Description

technical field [0001] The invention relates to a highly heat-resistant random copolymer of polycarbonate and aromatic polyester based on 1,4; 3,6-dihexyl-hexyl, its preparation method and application. Background technique [0002] With the depletion of petroleum resources and the deterioration of the environment, bio-based polymer materials have attracted widespread attention. As one of the most abundant biological raw materials, sugars can be fermented to obtain bio-based monomers for the preparation of polymer materials, so it is a very promising biological raw material. However, these monomers derived from grains or cellulose often have multiple functional groups (≥3), which makes it difficult to determine the structure of the synthesized polymers, and also has poor thermal and chemical stability. [0003] 1,4;3,6-Dihexanol contains only two hydroxyl groups, and it is formed by fusion of two tetrahydrofuran rings, which can endow polymer materials with the required ther...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/64C08L67/00
Inventor 冯龙朱文祥李春成张栋管国虎肖耀南郑柳春
Owner INST OF CHEM CHINESE ACAD OF SCI
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