Mixed type polybasicester plasticizer and preparation method thereof

A technology of ester plasticizer and polybasic acid, which is applied in the field of polyester waste recycling, can solve problems such as not being able to meet practical application requirements, and achieve excellent heat resistance, processing convenience, easy operation, and simple preparation methods.

Active Publication Date: 2017-01-25
安徽泰达新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the waste polyester degradation method is used to obtain the product, there are also the above-mentioned shortcomings, which cannot meet the requirements of practical applications.

Method used

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  • Mixed type polybasicester plasticizer and preparation method thereof
  • Mixed type polybasicester plasticizer and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] First prepare mixed polybasic acid ester plasticizer of the present invention according to the following method, this method may further comprise the steps:

[0032] 1) Add pulverized polyester waste, neopentyl glycol and catalyst 1,3-diethylimidazolium fluoride borate in the reaction vessel, the weight of the three is 20g, 68g and 1.8g respectively;

[0033] 2) Stir the reaction mixture and allow it to heat up slowly at a rate of 14° C. / h;

[0034]3) When the temperature is higher than 190°C, control the temperature of the reaction mixture between 190-210°C, and the reaction time is 5h;

[0035] 4) Cool down to 140-150°C, separate undegraded polyester waste; cool the residue to room temperature and dry to obtain a light yellow paste substance; the average molecular weight Mn of the light yellow paste substance is 574; hydroxyl value test The result was 196 mgKOH / g; 92% of the light yellow paste substance was Compound A.

[0036] 5) Add the above-mentioned light yello...

Embodiment 2

[0040] First prepare mixed polybasic acid ester plasticizer of the present invention according to the following method, this method may further comprise the steps:

[0041] 1) Add pulverized polyester waste, neopentyl glycol and catalyst 1,3-diethylimidazolium borofluoride in the reaction vessel, the weight of the three is 20g, 75g and 2.2g respectively;

[0042] 2) Stir the reaction mixture and allow it to heat up slowly at a rate of 15° C. / h;

[0043] 3) When the temperature is higher than 190°C, control the temperature of the reaction mixture between 190-210°C, and the reaction time is 6h;

[0044] 4) Cool down to 140-150°C, separate undegraded polyester waste; cool the residue to room temperature and dry to obtain a light yellow paste substance; the average molecular weight Mn of the light yellow paste substance is 521; hydroxyl value test The result was 209 mgKOH / g; 86% of the light yellow paste substance was Compound A.

[0045] 5) Add the above-mentioned light yellow ...

Embodiment 3

[0049] First prepare mixed polybasic acid ester plasticizer of the present invention according to the following method, this method may further comprise the steps:

[0050] 1) Add pulverized polyester waste, neopentyl glycol and catalyst 1,3-diethylimidazolium borofluoride in the reaction vessel, the weight of the three is 20g, 84g and 2g respectively;

[0051] 2) Stir the reaction mixture and make it warm up slowly at a rate of 16° C. / h;

[0052] 3) When the temperature is higher than 190°C, control the temperature of the reaction mixture between 190-210°C, and the reaction time is 8h;

[0053] 4) Cool down to 140-150°C to separate undegraded polyester waste; the residue is cooled to room temperature and dried to obtain a light yellow paste substance; the average molecular weight Mn of the light yellow paste substance is 643; hydroxyl value test The result was 201 mgKOH / g; 88% of the light yellow paste substance was Compound A.

[0054] 5) Add the above-mentioned light yell...

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Abstract

The invention discloses a method for comprehensively utilizing by-products generated in a trimellitic anhydride refining process. The method comprises the following steps: taking polyester waste as a raw material, taking 1,3-diethyl imidazole boron fluoborate as a catalyst, selecting the content and the process temperature of the catalyst, and regulating and controlling molecular size and distribution of a polyethylene terephthalate compound which is obtained by alcoholysis; and when the molecular size and the distribution are in a suitable range, adding refined residues of trimellitic anhydride and carrying out esterification/ester interchange reaction on the refined residues of the trimellitic anhydride and isooctanol to obtain a mixed type polybasicester plasticizer of which performance indexes such as acidity, heating loss and flashing point are good. Compared with the prior art, the mixed type polybasicester plasticizer has better performance indexes such as the acidity, the heating loss and the flashing point, has excellent heat resistance and processing convenience, and can meet requirements of plasticizers in the conventional field. Meanwhile, the preparation method is simple, easy to operate, low in cost of equipment and pollution-free; social benefit and economic benefit are huge; and the method is suitable for being generally popularized and used.

Description

technical field [0001] The invention belongs to the field of application of partial anhydride refining residue and recycling of polyester waste, and relates to a mixed polybasic acid ester plasticizer synthesized from partial anhydride refining residue and waste polyester material alcoholysis and its preparation method. Background technique [0002] Polyester is mainly used in the production of fibers, polyester bottles and films. The sources of polyester waste are mainly waste materials, scraps, waste polyester bottles and polyester films generated during the production process. With the rapid development of the polyester industry, polyester waste is increasing day by day, reaching hundreds of thousands of tons in China every year. Although these polyester wastes are not very toxic, they are light in weight and bulky and difficult to degrade under natural conditions, which not only has a great impact on the environment, but also causes a huge waste of resources. As an im...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K5/12C07C67/03C07C67/08C07C69/82C07C69/76
CPCC07C67/03C07C67/08C07C69/76C07C69/82C08K5/12
Inventor 柯伯成王永垒柯伯留柯美松罗建立毕红辉
Owner 安徽泰达新材料股份有限公司
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