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High-molecular-weight polyester plastic based on 2,3-butanediol and preparation method for same

A technology of polyester plastics and high molecular weight, which is applied in the field of high molecular weight polyester plastics and its preparation, can solve the problems of addition and other problems, and achieve the effect of reducing dependence

Active Publication Date: 2013-06-19
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

U.S.Pat.No.3714126 uses 2,3-butanediol as a modifier for PET, but only up to 8%

Method used

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  • High-molecular-weight polyester plastic based on 2,3-butanediol and preparation method for same
  • High-molecular-weight polyester plastic based on 2,3-butanediol and preparation method for same
  • High-molecular-weight polyester plastic based on 2,3-butanediol and preparation method for same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Add 73g of adipic acid, 83g of terephthalic acid, 230g of 2,3-butanediol, and 0.15g of zinc acetate into a 500mL three-necked flask equipped with a mechanical stirring device. After all the materials have been added, equip the flask with a condensation device, vacuumize and fill with nitrogen three times to remove the oxygen in the reaction vessel to ensure that the esterification reaction is carried out under nitrogen conditions. Heating to 225°C, after the reactants form a homogeneous system, control the reaction temperature to 225°C, carry out the esterification reaction under stirring and condensation conditions for 3 hours, during this process, water is distilled out from the reaction mixture as a by-product, until The amount of distillate reached 92% of the theoretically calculated amount. (The theoretically calculated amount of water is twice the sum of the molar amounts of adipic acid and terephthalic acid).

[0064] 0.10 g of tetra-n-butyl titanate and 0.12 g ...

Embodiment 2

[0069] Add 37g of adipic acid, 125g of terephthalic acid, 210g of 2,3-butanediol, and 0.10g of tetra-n-butyl titanate into a 500mL three-necked flask equipped with a mechanical stirring device. After all the materials have been added, equip the flask with a condensation device, vacuumize and fill with nitrogen three times to remove the oxygen in the reaction vessel to ensure that the esterification reaction is carried out under nitrogen conditions. Heating to 215°C, after the reactants form a homogeneous system, control the reaction temperature to 215°C, carry out the esterification reaction for 4 hours under stirring and condensation conditions, during this process, water is distilled out from the reaction mixture as a by-product, until The amount of distillate reached 92% of the theoretically calculated amount. (The theoretically calculated amount of water is twice the sum of the molar amounts of adipic acid and terephthalic acid).

[0070] 0.15 g of antimony trioxide and 0...

Embodiment 3

[0075] 131g dimethyl adipate, 49g dimethyl terephthalate, 70g 2,3-butanediol, 140g 1,4-butanediol, 0.10g magnesium acetate, 0.05g tetraisooctyl titanate The ester was added to a 500mL three-necked flask equipped with a mechanical stirring device. After all the materials have been added, equip the flask with a condensation device, vacuumize and fill with nitrogen three times to remove the oxygen in the reaction vessel to ensure that the transesterification reaction is carried out under nitrogen conditions. Heating to 230°C, after the reactants form a homogeneous system, control the reaction temperature at 230°C, carry out the transesterification reaction under stirring and condensation conditions for 2 hours, during this process, methanol is distilled out from the reaction mixture as a by-product, until The amount of distillate reached 92% of the theoretically calculated amount. (The theoretically calculated amount of methanol is twice the sum of the molar amounts of dimethyl ...

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Abstract

The invention discloses a high-molecular-weight polyester plastic based on 2,3-butanediol. The polyester plastic has a repetition structure unit shown in the formula, wherein R1 is defined in the specification, p is 0-11, R2 is defined in the specification, R3 is defined in the specification, n is 1-1000, and m is 1-1000. The invention further discloses a preparation method for the high-molecular-weight polyester plastic based on 2,3-butanediol. The polyester plastic is a transparent polyester plastic due to the existence of the side-chain methyl of 2,3-butanediol, as well as is high in molecular weight, excellent in mechanical property, and wide in application prospect in the aspects of injection-moulded parts, optical devices, thin films, laminated materials and the like.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a 2,3-butanediol-based high molecular weight polyester plastic and a preparation method thereof. Background technique [0002] Petroleum is the most important chemical raw material. In recent years, with the gradual exploitation and increasing consumption of human beings, the amount stored and available for exploitation on the earth is becoming less and less. Moreover, these chemical products produce a large amount of CO in the process of use and final disposal. 2 , has led to a series of serious environmental problems such as global warming, and directly threatens the survival of human beings. How to reduce or replace the use of non-renewable resources such as petroleum has become one of the problems faced by human beings all over the world. [0003] As a renewable resource, 2,3-butanediol will not be exhausted and will not cause environmental problems such as the gr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/42C08G63/183C08G63/16B29C47/92B29C48/92
CPCB29C48/08B29C48/40
Inventor 赵冬云杨桂生
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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