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A kind of preparation method of fluorine-containing acrylate graft modified soybean oil-based waterborne polyurethane

A water-based polyurethane and soybean oil-based technology, which is applied in the field of preparation of fluorine-containing acrylate graft modified soybean oil-based water-based polyurethane, can solve the problem of insufficient resin adhesion and impact resistance, active acryloyl chloride chemical properties, and complicated post-treatment and other problems, to achieve good adhesion, no need for post-treatment, and simple preparation methods

Active Publication Date: 2021-08-10
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Epoxy soybean oil acrylate AESO is a soybean oil-based polyol commonly used at present, but AESO is synthesized at high temperature in the presence of catalysts and polymerization inhibitors, and has a high viscosity, which is not conducive to construction. There are also deficiencies in impact
Recently, Chinese patent CN107129714A synthesized a new low-viscosity soybean oil-based polyol ACSO containing acrylate by using acryloyl chloride and chlorinated soybean oil polyol SOL under low temperature and catalyst-free conditions for the preparation of UV-curable coatings However, the chemical properties of acryloyl chloride are active, requiring low-temperature reaction, and the by-product hydrogen chloride is generated, and the post-treatment is complicated.
[0006] Chinese patent CN106084141A discloses a method for preparing acrylate-modified waterborne polyurethane from soybean oil polyols. The method uses soybean oil-based polyol epoxy soybean oil acrylate AESO, which is synthesized at high temperature in the presence of a catalyst and a polymerization inhibitor. And the viscosity is relatively high, which is not conducive to construction, and the obtained resin also has insufficient adhesion and impact resistance, and the post-processing is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] (1) Preparation of chlorinated soybean oil-based polyurethane acrylate polyol ADSO

[0035] ① Preparation of chlorinated soybean oil-based polyol SOL: Mix 50.8g hydrochloric acid and 150ml acetone in a 500ml flask. 75.2 g of epoxidized soybean oil was added dropwise to the flask and stirred. React at 45°C for 15 minutes, then cool down to 40°C and continue stirring for 2h. 200ml of ethyl acetate and 125ml of water were added, and the layers were separated. The organic layer was washed successively with sodium bicarbonate solution and water to pH 8. Then it was dried with magnesium sulfate, filtered, and the solvent was distilled off under reduced pressure to obtain a yellow viscous liquid chlorinated soybean oil-based polyol. The hydroxyl value of the prepared SOL was 149.91 mgKOH / g, and the acid value was 26.16 mgKOH / g.

[0036] ② Preparation of urethane acrylate IPDI-HEA: Add 11.1145g of isophorone diisocyanate IPDI, 0.087g of catalyst dibutyltin dilaurate DBTDL a...

Embodiment 2

[0041] (1) Preparation of chlorinated soybean oil-based polyurethane acrylate polyol ADSO

[0042] ① Preparation of chlorinated soybean oil-based polyols: Mix 50.8g of hydrochloric acid and 150ml of acetone in a 500ml flask. 75.2 g of epoxidized soybean oil was added dropwise to the flask and stirred. React at 45°C for 15 minutes, then cool down to 40°C and continue stirring for 2h. 200ml of ethyl acetate and 125ml of water were added, and the layers were separated. The organic layer was washed successively with sodium bicarbonate solution and water to pH 7. Then it was dried with magnesium sulfate, filtered, and the solvent was distilled off under reduced pressure to obtain a yellow viscous liquid chlorinated soybean oil-based polyol. The hydroxyl value of the prepared SOL was 149.91 mgKOH / g, and the acid value was 26.16 mgKOH / g.

[0043] ② Preparation of urethane acrylate IPDI-HEA: Add 11.1145g of isophorone diisocyanate IPDI, 0.087g of catalyst dibutyltin dilaurate DBTD...

Embodiment 3

[0048] (1) Preparation of chlorinated soybean oil-based polyurethane acrylate polyol ADSO

[0049] ① Preparation of chlorinated soybean oil-based polyols: Mix 50.8g of hydrochloric acid and 150ml of acetone in a 500ml flask. 75.2 g of epoxidized soybean oil was added dropwise to the flask and stirred. React at 45°C for 15 minutes, then cool down to 40°C and continue stirring for 2h. 200ml of ethyl acetate and 125ml of water were added, and the layers were separated. The organic layer was washed successively with sodium bicarbonate solution and water to pH 8. Then it was dried with magnesium sulfate, filtered, and the solvent was distilled off under reduced pressure to obtain a yellow viscous liquid chlorinated soybean oil-based polyol. The hydroxyl value of the prepared SOL was 149.91 mgKOH / g, and the acid value was 26.16 mgKOH / g.

[0050] ② Preparation of urethane acrylate IPDI-HEA: Add 11.1145g of isophorone diisocyanate IPDI, 0.087g of catalyst dibutyltin dilaurate DBTD...

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Abstract

The invention relates to a preparation method of fluorine-containing acrylate graft modified soybean oil-based water-based polyurethane, which comprises the following steps: (1) preparation of chlorinated soybean oil-based polyurethane acrylate polyol ADSO; (2) soybean oil-based Preparation of waterborne polyurethane ADSO‑WPU; (3) Preparation of soybean oil-based waterborne polyurethane ADSO‑PUA grafted with fluorine-containing acrylate. The invention has the advantages of simple method, mild conditions and no post-treatment, and the prepared polyurethane has good adhesion, good water and weather resistance, high hardness and excellent mechanical properties.

Description

technical field [0001] The invention belongs to the field of water-based paint, in particular to a preparation method of fluorine-containing acrylate graft modified soybean oil-based water-based polyurethane. Background technique [0002] Water-based polyurethane uses water instead of organic solvents as the dispersion medium, and has the advantages of low emission of volatile organic compounds (VOC), non-toxic, non-polluting, safe and reliable. The polyurethane structure has soft segments and hard segments, and the soft and hard segments can be adjusted. Therefore, materials with excellent performance can be obtained by adjusting the structure of polyurethane molecules. However, the coating film formed after the introduction of hydrophilic groups often has higher surface energy, so the water and oil resistance of the coating film is reduced while improving the hydrophilicity. [0003] In order to make up for this defect, people usually introduce strong hydrophobic groups i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/00C08F220/14C08F220/18C08F220/22C08G18/67C08G18/36C08G18/34
CPCC08F283/008C08G18/348C08G18/36C08G18/67C08F220/14
Inventor 刘少杰赵婷王利利郝盼盼唐二军徐小东董立志
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY