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A pure vegetable oil-based polyene UV-curable prepolymer

An oil-based polyene, pure plant technology, applied in polyester coatings, coatings, adhesives, etc., can solve the problems of limited varieties of vegetable oil-based UV-curable prepolymers, low renewable carbon content, and lack of coating performance , to achieve good flexibility, high reactivity, and reduce dependence

Inactive Publication Date: 2016-05-11
南雄科大科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limitations of the types of renewable resources used and their derivatives and structural characteristics, there are not many varieties of vegetable oil-based UV-curable prepolymers, low renewable carbon content and lack of coating performance.

Method used

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  • A pure vegetable oil-based polyene UV-curable prepolymer
  • A pure vegetable oil-based polyene UV-curable prepolymer
  • A pure vegetable oil-based polyene UV-curable prepolymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Take 5g of rapeseed oil, 12g of 30% hydrogen peroxide and 5.36g of formic acid in a flask, put it in a magnetic stirrer at room temperature and react for 24h, add 10ml of ethyl acetate, 10ml of distilled water, and let stand for 10min to separate layers. Take the upper organic phase and wash it with sodium carbonate solution until alkaline, dry it with anhydrous magnesium sulfate, filter it with suction, and evaporate it by rotary evaporation to remove the solvent to obtain epoxy rapeseed oil;

[0022] 2) Mix 2.0 g of the prepared epoxy rapeseed oil with 1.47 g of undecylenic acid (the molar ratio of epoxy and carboxyl groups is 1:1), and react at 170°C for 8 hours to obtain undecylenic acid modified rapeseed Oil-based polyols;

[0023] 3) Add 3.2 g of undecanoyl chloride, 1.6 g of triethylamine and 5 ml of ethyl acetate to 3.47 g of undecylenic acid-modified rapeseed oil-based polyol, react in an ice bath for 2 hours, then warm up to room temperature for reaction 2...

Embodiment 2

[0026] 1) Take 5g of corn oil, 12g of 30% hydrogen peroxide and 5.36g of formic acid in a flask, place it in a magnetic stirrer for 24h, add 10ml of ethyl acetate, 10ml of dedistilled water, and let stand for 10min to separate layers. The upper organic phase was washed with sodium carbonate solution until alkaline, dried with anhydrous magnesium sulfate, suction filtered, and rotary evaporated to remove the solvent to obtain epoxy corn oil;

[0027] 2) Mix 2.0g of epoxy corn oil obtained above with 1.5g of undecylenic acid (the molar ratio of epoxy and carboxyl groups is 1:1), and react at 170°C for 8 hours to obtain undecylenic acid modified corn oil base Polyol;

[0028] 3) Add 3.6g of undecanoyl chloride, 1.8g of triethylamine and 5ml of ethyl acetate to 3.5g of undecylenic acid-modified rapeseed oil-based polyol, react in an ice bath for 2 hours, and heat up to room temperature for reaction 24 hours, suction filtration, liquid phase was washed with 1% sodium hydroxide aqu...

Embodiment 3

[0030] 1) Take 5g of olive oil, 8.4g of 30% hydrogen peroxide and 3.75g of formic acid in a flask, put it in a magnetic stirrer for 24h, add 10ml of ethyl acetate, 10ml of distilled water, and let stand for 10min to separate layers. The upper organic phase was washed with sodium carbonate solution until alkaline, dried with anhydrous magnesium sulfate, suction filtered and rotary evaporated to obtain epoxy olive oil;

[0031] 2) Mix 2.0g of epoxy olive oil obtained above with 1.1g of undecylenic acid (the molar ratio of epoxy and carboxyl groups is 1:1), and react at 170°C for 8 hours to obtain undecylenic acid modified olive oil base Polyol;

[0032] 3) Add 2.4 g of undecanoyl chloride, 1.2 g of triethylamine and 5 ml of ethyl acetate to 3.1 g of undecylenic acid-modified olive oil-based polyol, react in an ice bath for 2 hours, and heat up to room temperature for 24 hour, suction filtration. The liquid phase was washed with 1% aqueous sodium hydroxide solution and distille...

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Abstract

The invention belongs to the field of photosensitive polymer materials, and discloses a preparation method of a pure plant oil based UV curable prepolymer. The method comprises the following steps: (1) epoxidizing vegetable oil by hydrogen peroxide and benzoic acid; (2) adding an undecylenic acid ring opening epoxy group to the epoxidized vegetable oil, reacting at 170 DEG C for 8 h in the absence of solvent to prepare undecylenic acid modified vegetable oil based polyols; (3) mixing undecenoyl chloride and undecylenic acid modified vegetable oil based polyols prepared from undecylenic acid in ethyl acetate, adding triethylamine in ice bath, reacting for 2 h, then stirring for 24 h at room temperature, conducting pumping filtration, wash wiht 1% sodium hydroxide aqueous solution and distilled water, drying by magnesium sulfate to remove the solvent to obtain the product. The invention can reduce the dependence on oil resources, has the advantages of branching structure, low viscosity, UV curable double bonds at the end positions, high reactivity, a large amount of long chain alkanes contained and good flexibility.

Description

technical field [0001] The invention relates to the field of photosensitive polymer materials, in particular to the field of application of renewable resources in UV curing coatings. Background technique [0002] UV curing technology refers to the process of cross-linking and polymerizing liquid oligomers and monomers to form solid products under the action of UV. "5E" characteristic industrial technology. At present, the UV curing system is mainly composed of acrylate prepolymer, monomer diluent and photoinitiator, and its performance is mainly determined by the prepolymer. At this stage, the starting materials of UV curing formulations are all petrochemical products. In the case of depletion of petroleum resources and rising prices, it is of great basic research and economic significance to develop new UV curing coatings using renewable resources as raw materials. [0003] Vegetable oil can be regenerated through photosynthesis, has a short growth cycle, is cheap, and ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G63/49C09D167/08C09J167/08
Inventor 付长青申亮程烈
Owner 南雄科大科技有限公司