A kind of castor oil-based water-based photocurable nonionic emulsion and its preparation method and application

A castor oil-based, non-ionic technology is applied in the field of castor oil-based water-based photocurable non-ionic emulsion and its preparation, can solve problems such as few flexible segments, achieve high reproducibility, increase content, and be conducive to participating in polymerization. Effect

Active Publication Date: 2022-02-01
DONGGUAN CTL NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Third, the patent uses a hyperbranched resin prepared from dimethylol propionic acid, which has a branched molecular structure and fewer flexible segments

Method used

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  • A kind of castor oil-based water-based photocurable nonionic emulsion and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] (1) Add metered castor oil and ricinoleic acid (the molar ratio of castor oil to ricinoleic acid is 1 : 9) and N, N'-diisopropylcarbodiimide (amount of 1% of the molar amount of ricinoleic acid), stir and heat up to 120°C for 3 hours of vacuum dehydration reaction, then cool down to 65°C and add a certain amount of acetone (the amount is 10 times the total mass of castor oil and ricinoleic acid) to dissolve , then put it at 5°C and add a certain amount of cyclohexane (the amount is 15 times the total mass of castor oil and ricinoleic acid) to make the product crystallize and precipitate out, and dry it in vacuum to obtain pure castor oil-based star-shaped prepolymer thing;

[0022] (2) Mix isophorone diisocyanate (3 times the molar amount of castor oil) and dibutyltin dilaurate (0.1% by weight of pure castor oil-based star prepolymer) in a constant temperature water bath at 15°C Drop the mixture into the pure castor oil-based star-shaped prepolymer prepared in step (1)...

Embodiment 2

[0026] (1) Add metered castor oil and ricinoleic acid (the molar ratio of castor oil to ricinoleic acid is 1: 12) and dicyclohexylcarbodiimide (the molar amount of ricinoleic acid in the reaction kettle) 3%), stir and heat up to 150°C for 2 hours of vacuum dehydration reaction, then cool down to 75°C and add a certain amount of cyclohexanone (the amount is 15 times the total mass of castor oil and ricinoleic acid) to dissolve, and then dissolve it Place at 15°C and add a certain amount of octane (the amount is 10 times the total mass of castor oil and ricinoleic acid) to precipitate the product crystallization, and dry it in vacuum to obtain pure castor oil-based star prepolymer;

[0027] (2) Drop a mixture of toluene diisocyanate (3.1 times the molar amount of castor oil) and dibutyltin dilaurate (0.15% of the weight of pure castor oil-based star prepolymer) in a constant temperature water bath at 25°C Put it into the pure castor oil-based star-shaped prepolymer prepared in s...

Embodiment 3

[0031] (1) Add metered castor oil and ricinoleic acid (the molar ratio of castor oil to ricinoleic acid is 1:15) and 1-(3-dimethylaminopropyl)-3-ethyl Carbodiimide hydrochloride (the dosage is 2% of the molar amount of ricinoleic acid), stir and heat up to 130°C for 2.5 hours of vacuum dehydration reaction, then cool down to 68°C and add a certain amount of methyl ethyl ketone (the amount is castor oil and 12 times the total mass of castor oil and ricinoleic acid) to dissolve, then put it at 10°C and add a certain amount of n-hexane (the amount is 13 times the total mass of castor oil and ricinoleic acid) to precipitate the product crystallization, and vacuum dry Promptly obtain pure castor oil-based star prepolymer;

[0032] (2) Mix p-phenylene diisocyanate (3.2 times the molar amount of castor oil) and dibutyltin dilaurate (0.12% by weight of pure castor oil-based star prepolymer) in a constant temperature water bath at 20°C Drop into the pure castor oil-based star-shaped p...

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Abstract

The invention belongs to the field of water-based UV curing materials, and specifically relates to a method for preparing castor oil-based water-based photocurable non-ionic emulsions, including (1) reacting castor oil, ricinoleic acid and an esterification catalyst, and adding a precipitation agent after dissolving Precipitate the product; (2) Mix diisocyanate and dibutyltin dilaurate and slowly add to the product of the previous step to react to obtain an intermediate product; (3) Dissolve the intermediate product with a solvent, then add polyethylene glycol acrylate and polymerization inhibitor (4) The star-shaped castor oil-based water-based UV-curable prepolymer, vegetable oil-based reactive nonionic surfactant, free radical photoinitiator and cationic photoinitiator The agent is mixed and added with water to disperse evenly to obtain castor oil-based water-based light-curable non-ionic emulsion. The star-shaped castor oil-based water-based UV-curable prepolymer prepared by the method of the present invention has high crosslinking density, and the coating film prepared by using it has excellent mechanical and water resistance properties, and can be used as an environment-friendly coating, ink and adhesive. film-forming base material.

Description

technical field [0001] The invention belongs to the field of water-based UV curing materials, and in particular relates to a castor oil-based water-based light-curable nonionic emulsion and a preparation method and application thereof. Background technique [0002] The consumption of fossil resources and environmental pollution not only affect the ecological environment, but also hinder the development of organic polymer chemical industry based on fossil raw materials. Biomass resources are currently the only resources that can be used sustainably. A large number of natural products can be extracted from agricultural and forestry resources, many of which contain active reactive groups such as double bonds or hydroxyl groups. It is easy to build a UV curing system, thereby converting agricultural and forestry natural resources into UV curing raw materials, which greatly expands the raw materials of UV curing materials. source. Castor oil is an important biomass resource, its...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/03C08G18/75C08G18/76C08G18/64C08G18/10C08G18/67C09D175/14C09J175/14C09D11/00C08L75/14
CPCC08J3/03C08G18/755C08G18/64C08G18/10C08G18/6795C08G18/7614C08G18/7671C08G18/758C09D175/14C09J175/14C09D11/00C08J2375/14
Inventor 袁腾尹鉴卢开平卢杰宏赵文爱杨卓鸿
Owner DONGGUAN CTL NEW MATERIAL TECH
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