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Branched polyether alcohol ester compound and application thereof

A technology of ester compounds and branched polyether alcohols, applied in organic chemistry, coating, etc.

Active Publication Date: 2017-04-19
EAST CHINA UNIV OF SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] This research group once developed a polyether alcohol ester compound (201610430720.0) as a film-forming aid for water-based paints, but in actual use, it was found that when the polyether alcohol ester compound was used as a film-forming aid for water-based paints, The brightness of the formed film and the dispersibility of the pigment need to be further improved

Method used

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  • Branched polyether alcohol ester compound and application thereof
  • Branched polyether alcohol ester compound and application thereof
  • Branched polyether alcohol ester compound and application thereof

Examples

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preparation example Construction

[0021] The method for the compound shown in the preparation formula I provided by the present invention specifically comprises the following steps:

[0022] In the presence of a catalyst (such as p-toluenesulfonic acid, trifluoromethanesulfonic acid, acidic cation exchange resin, solid acid or rare earth Lewis acid, etc.) and an inert gas (such as nitrogen, etc.), the compound shown in formula II and the corresponding of organic carboxylic acids (R 4 COOH or / and R 6 COOH) at 150°C to 170°C for at least 5 hours, cooled and filtered, the filtrate was transferred to a separatory funnel, an appropriate amount of water was added, the water phase was separated, the organic phase was retained, and the organic phase was washed in turn (dissolved with lye and water) After the organic phase is washed to neutrality) and the low boilers are evaporated, the target object (compound shown in formula I) is obtained;

[0023] Wherein, the dosage of the catalyst is 0.05%-0.2% of the total wei...

Embodiment 1

[0029] The preparation of compound shown in formula Ⅰ-1:

[0030]

[0031] 15 grams of polyether polyol (compound shown in formula II-1, technical grade, Shanghai Fujia Fine Chemical Co., Ltd.), 8 grams of isobutyric acid, and 7 grams of anhydrous sodium sulfate are placed in a mechanical stirring and condensation tube, In a four-necked flask with a thermometer, in the presence of 0.1 gram of catalyst (such as p-toluenesulfonic acid, trifluoromethanesulfonic acid, acidic cation exchange resin, solid acid or rare earth Lewis acid, etc.) and nitrogen, the temperature of the reaction system was raised to 150 ℃, and keep stirring at 150℃ for 5h, stop heating, cool down, add appropriate amount of alkylbenzene (such as toluene or xylene, etc.) , the organic phase was washed with lye and water in turn until neutral, and the low boilers were evaporated to obtain a light yellow transparent substance (compound shown in formula Ⅰ-1). The test data of its infrared spectrum is as follo...

Embodiment 2

[0034] The preparation of compound shown in formula Ⅰ-2:

[0035]

[0036] Except that isobutyric acid in Example 1 was replaced by 2-ethyl-hexanoic acid, the other steps and conditions were the same as in Example 1 to obtain a light yellow transparent compound (compound shown in formula I-2). The test data of its infrared spectrum is as follows:

[0037] IR (tablet method): 2968.58 (s, υ-C-H), 1738.79 (s, υ-C=O), 1345.72 (s, υ-C-O-C), 1247.85, 1108.23 (d, υ-CO-O).

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Abstract

The invention relates to a branched polyether alcohol ester compound and application thereof. The branched polyether alcohol ester compound is a compound described in the formula I. The branched polyether alcohol ester compound can be utilized as a film coalescing aid for water-based paint (particularly, water-based nail polish). In the formula I (referring to the description), R1, R2 and R3 are independently selected from hydrogen, straight chains from C1 to C3, or branched alkane; R4 and R6 are independently selected from straight chains from C1 to C15 or branched alkyl; a, b and c are independently selected from integers between 2 and 10; and R5 is selected from straight chains from C1 to C15 or branched alkyl.

Description

technical field [0001] The invention relates to a polyether alcohol ester compound and its application, in particular to a branched polyether alcohol ester compound and its application. Background technique [0002] Latex paint is a large category of water-based paint, which contains very low volatile organic compounds (Volatile Organic Compounds, VOC for short), and belongs to "green paint". Latex paint is mainly a mixture of an aqueous dispersion of polymer particles and an aqueous dispersion of pigment particles. But they do not have good construction performance, and it is difficult to obtain a good paint film. Various additives must be added to achieve the required construction performance and film-forming quality. Film-forming additives are one of the most important additives in latex paint. [0003] The film-forming process of latex paint after being painted is mainly divided into three stages. After the latex paint is just painted on the wall, it is wet at first, an...

Claims

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Application Information

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IPC IPC(8): C07C69/28C09D7/12
CPCC07C69/28C09D7/63
Inventor 王利民李玉博邢晓萍田禾韩建伟程毅
Owner EAST CHINA UNIV OF SCI & TECH