A kind of self-emulsifying aqueous polyester emulsion and preparation method thereof

A water-based polyester and polyester technology, applied in the direction of polyester coatings, coatings, etc., to achieve the effects of easy promotion, easy access to sources, and abundant sources

Active Publication Date: 2018-07-06
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the research on self-emulsifying waterborne polyurethane and epoxy resin is relatively sufficient, and there are few reports on self-emulsifying waterborne polyester used in coatings.

Method used

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  • A kind of self-emulsifying aqueous polyester emulsion and preparation method thereof
  • A kind of self-emulsifying aqueous polyester emulsion and preparation method thereof
  • A kind of self-emulsifying aqueous polyester emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Put methylene succinic acid, methyl succinic acid-5-sodium sulfonate, and 1,4-butanediol with a molar ratio of 1:0.2:1.25 in a 250ml four-necked flask, and add the catalyst methylene chloride Tin, the amount of which is added is 0.18% of the mass of methylene succinic acid, connected to the water separator, thermometer and stirrer, heated up to 180°C under the protection of nitrogen and vigorously stirred, when no more water is produced in the water separator After the esterification reaction was completed, the temperature was lowered to 160°C, and the pressure was reduced to -0.1Mpa to carry out the polycondensation reaction, and the reaction time was 3 hours. Hydroxyl-terminated poly(butylene itaconate-co-methylsuccinate-5-sodium butanediol sulfonate) ester (PBIINa) was obtained. Add undecylenic acid dropwise, the addition amount is 10% of the molar weight of 1,4 butanediol, under the protection of nitrogen, react at 160°C and stir vigorously for 1 hour to obtain unde...

Embodiment 2

[0035]Put methylene succinic acid, methyl succinic acid-5-sodium sulfonate, and 1,4-butanediol with a molar ratio of 1:0.2:1.25 in a 250ml four-necked flask, and add the catalyst methylene chloride Tin, the amount of which is added is 0.18% of the mass of methylene succinic acid, connected to the water separator, thermometer and stirrer, heated up to 180°C under the protection of nitrogen and vigorously stirred, when no more water is produced in the water separator After the esterification reaction was completed, the temperature was lowered to 160°C, and the pressure was reduced to -0.1Mpa to carry out the polycondensation reaction, and the reaction time was 3 hours. The hydroxyl-terminated PBIINa was obtained. Add undecylenic acid dropwise, the addition amount is 7% of the molar weight of 1,4 butanediol, under the protection of nitrogen, react at 110°C and stir vigorously for 5 hours to obtain undecylenic acid modified polyester . The polyester was added into water to prepa...

Embodiment 3

[0037] Put methylene succinic acid, methyl succinic acid-5-sodium sulfonate, and 1,4-butanediol with a molar ratio of 1:0.2:1.25 in a 250ml four-necked flask, and add the catalyst methylene chloride Tin, the amount of which is added is 0.18% of the mass of methylene succinic acid, connected to the water separator, thermometer and stirrer, heated up to 180°C under the protection of nitrogen and vigorously stirred, when no more water is produced in the water separator After the esterification reaction was completed, the temperature was lowered to 160°C, and the pressure was reduced to -0.1Mpa to carry out the polycondensation reaction, and the reaction time was 3 hours. The hydroxyl-terminated PBIINa was obtained. Add undecylenic acid dropwise, the amount added is 15% of the molar weight of 1,4 butanediol, under the protection of nitrogen, react at 140°C and stir vigorously for 4 hours to obtain undecylenic acid modified polyester . The polyester was added into water to prepar...

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Abstract

The invention provides novel self-emulsifying water-based polyester emulsion and a preparation method thereof. The preparation method includes the following steps that itaconic acid, methyl-butanedioic acid-5-sodium sulfonate and 1,4-butanediol are subjected to condensation polymerization, then terminal hydroxyl water-based polyester-poly(itaconic acid butanediol-co-methyl-butanedioic acid-5-sodium sulfonate butanediol)ester (PBIINa) is obtained, and the PBIINa and terminal olefine acid are heated to 110-160 DEG C under nitrogen protection, and terminal olefine acid modified water-based polyester is obtained after an esterification reaction. The terminal olefine acid modified water-based polyester is dispersed in water, and then the water-based polyester emulsion is obtained. The preparation method of the water-based polyester emulsion is novel and has a self-emulsifying function, an emulsifying agent does not need to be added, organic solvent is not contained, and the water-based polyester emulsion can be used as emulsion coating and has broad market prospects. The steps are simple, operation is convenient, and practicability is high.

Description

technical field [0001] The invention belongs to the field of water-based emulsion preparation, in particular to a self-emulsifying water-based polyester emulsion and a preparation method thereof. Background technique [0002] With the development of my country's economy, the output of my country's coatings has approached 10 million tons, and China has become the largest country in the production and consumption of coatings in the world. However, most of the coatings currently used are solvent-based coatings with high VOC content, which will cause serious environmental pollution and damage human health during the manufacturing and construction process. With the continuous enhancement of human environmental protection awareness, people pay more and more attention to the research and application of environmentally friendly water-based coatings, and the solidification, solvent-free, and water-based coatings have shown a development trend. [0003] Water-based paint is an enviro...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/91C09D167/06
CPCC08G63/918C09D167/06
Inventor 高传慧刘月涛韩释剑王静于跃芹武玉民
Owner QINGDAO UNIV OF SCI & TECH
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