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Fluorine-containing hyperbranched polyester acrylic ester and method of preparing the same

A polyester acrylate and acrylate-based technology, applied in the field of UV-curable hydrophobic and oleophobic materials, can solve problems such as pollution, isocyanate toxicity, and high reaction temperature

Inactive Publication Date: 2009-02-18
UNIV OF SCI & TECH OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this system has the disadvantages of long curing time, high reaction temperature, difficult operation, and the residual isocyanate in the cured film is toxic and will cause pollution.

Method used

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  • Fluorine-containing hyperbranched polyester acrylic ester and method of preparing the same
  • Fluorine-containing hyperbranched polyester acrylic ester and method of preparing the same
  • Fluorine-containing hyperbranched polyester acrylic ester and method of preparing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Under nitrogen protection, 4.45 g of isophorone diisocyanate (IPDI) was added to a three-necked flask reactor equipped with a condensation and stirring device, diluted with 20 mL of N, N-dimethylacetamide (DMAc), and added 0.1wt% of the catalyst dibutyl tin laurate (DBTDL), then slowly drip the DMAc solution containing 9.74g of perfluorooctyl alcohol in this solution with a dropping funnel, after the dropwise addition, the temperature is raised to 50°C, React for 12 hours to obtain the first semi-addition product A1; at the same time, add IPDI 4.45g in another three-necked flask reactor equipped with condensation and stirring devices, dilute with 20mLDMAc, and add 0.1wt% catalyst DBTDL , and then slowly dropwise add the DMAc solution containing 2.43g of hydroxyethyl acrylate (HEA) to the solution with a dropping funnel, after the dropwise addition, the temperature is raised to 50°C, and the reaction is carried out for 12 hours to obtain the second semi-addition product B...

Embodiment 2

[0046] Under the protection of nitrogen, add IPDI 4.45g in the three-necked flask reactor equipped with condensation and stirring device, dilute with 20mL dioxane, and add 0.5wt% catalyst DBTDL, then use the dropping funnel to slowly add to the solution Add dropwise a dioxane solution containing 9.74 g of perfluorooctyl ethanol. After the dropwise addition, heat up to 50° C. and react for 12 hours to obtain the first semi-addition product A2; Add IPDI 18.80g in the three-necked flask reactor of the condensing and stirring device, dilute with 20mL dioxane, and add the catalyst DBTDL of 0.5wt%, then use the dropping funnel to slowly drop the dioxane containing HEA 9.72g in the solution. Hexane solution, after the dropwise addition, was heated up to 50°C, and reacted for 12 hours to obtain the second semi-addition product B2; BoltornH30 11.25g was added to a three-necked flask reactor equipped with a condensation and stirring device, and 50mL dihydrogen After the oxyhexane was di...

Embodiment 3

[0058] Under the protection of nitrogen, add IPDI 4.45g into the three-necked flask reactor equipped with condensation and stirring device, dilute with 20mL dimethyl sulfoxide, and add 0.3wt% catalyst DBTDL, then use the dropping funnel to slowly add to the solution Add dropwise a dimethyl sulfoxide solution containing 9.74 g of perfluorooctyl ethanol. After the dropwise addition, heat up to 50° C. and react for 12 hours to obtain the first semi-addition product A3; Add IPDI 9.90g to the three-necked flask reactor of the condensation and stirring device, dilute with 20mL dimethyl sulfoxide, and add 0.3wt% catalyst DBTDL, then slowly add distillate containing HEA 9.72g in the solution with a dropping funnel. After the addition of methyl sulfoxide solution, the temperature was raised to 50°C, and the reaction was carried out for 12 hours to obtain the second semi-addition product B3; 22.84 g of BoltornH40 was added to a three-necked flask reactor equipped with a condensation and ...

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Abstract

The invention discloses fluorinated hyperbranched polyester acrylate and a preparation method thereof. Fluoride-alcohol and hydroxy acrylate are chosen to react with diisocyanate respectively to achieve two semi-additive products, and the two semi-additive products in proper proportions are used to react with hydroxyl-terminated hyperbranched polymer, to achieve hyperbranched polymer fluorine terminated bases with acrylic acid ester base groups and halothane base groups linked to the hyperbranched molecular framework through carbamate base groups as well as acrylic acid modified hyperbranched polymer. The iso-cyan acid radical reaction of the method has high activity, the Fluoro-alcohol conversion rate is high, the raw materials are cheap and easy to obtain, the operation is easy, and capable of facilitating industrial production. The fluoric hyperbranched polyester acrylate achieved by the method can be applied to ultraviolet-light solidification coating, the achieved coating has sound hydrophobic and oleophobic performances, and the industrial application is very broad.

Description

technical field [0001] The invention belongs to the technical field of ultraviolet curing hydrophobic and oleophobic materials, and in particular relates to fluorine-containing hyperbranched polyester acrylate and a preparation method thereof. Background technique [0002] With the increasing awareness of environmental protection, people gradually realize the high hazards of traditional solvent-based coatings. Based on the requirements for environmental protection, people have developed a new type of coating with no solvent or low solvent content - UV-curable coating. UV-curable coatings have developed rapidly due to their fast curing speed, low emissions of volatile organic compounds, low operating temperature, and excellent coating properties. Acrylate monomers and oligomers have been widely used as film formers for adhesives, inks, and coatings due to their low cost, fast curing, and less oxygen inhibition. Hyperbranched polymers have good solubility, low viscosity, and ...

Claims

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Application Information

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IPC IPC(8): C08G63/91C09D167/07
Inventor 缪慧傅祺施文芳
Owner UNIV OF SCI & TECH OF CHINA
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