Castor-oil-based hyperbranched UV curable polyurethane acrylate and preparation method and application thereof

A urethane acrylate, castor oil-based technology is applied in the field of UV-curable polymer materials, which can solve problems such as restricting application, achieve good mechanical properties and hydrolysis resistance, improve application range and value, and excellent curing performance.

Active Publication Date: 2017-02-15
SOUTH CHINA AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The Chinese invention patent with the publication number CN105601880A discloses a preparation method of castor oil-based polyurethane acrylate. The use of chloroform as a purification diluent seriously restricts its large-scale industrial production

Method used

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  • Castor-oil-based hyperbranched UV curable polyurethane acrylate and preparation method and application thereof
  • Castor-oil-based hyperbranched UV curable polyurethane acrylate and preparation method and application thereof
  • Castor-oil-based hyperbranched UV curable polyurethane acrylate and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Add metered dimethylolpropionic acid, castor oil (the molar ratio of castor oil to dimethylolpropionic acid is 1:9) and N,N'-diisopropyl carbon in the reaction kettle Diimine (consumption is 1% of the molar quantity of dimethylol propionic acid), stir and be warming up to 120 ℃ of vacuum dehydration reaction 3h, then cool down to 65 ℃ and add a certain amount of acetone (consumption is hyperbranched hydroxyl resin 10 times the quality of the hyperbranched hydroxy resin) was dissolved, and then placed in 5 ° C and then added a certain amount of cyclohexane (amount of 10 times the quality of the hyperbranched hydroxy resin) to precipitate the product crystallization, vacuum drying to obtain the hyperbranched hydroxy resin;

[0036] (2) In a constant temperature water bath at 15°C, isophorone diisocyanate (the amount is 12 times the molar weight of castor oil) and dibutyltin dilaurate (the amount is the castor oil-based hyperbranched UV photocurable polyurethane acrylat...

Embodiment 2

[0039](1) Add metered dimethylolpropionic acid, castor oil (the molar ratio of castor oil to dimethylolpropionic acid is 1:9) and dicyclohexylcarbodiimide (amount of 3% of the molar weight of dimethylol propionic acid), stir and be warming up to 150 ℃ of vacuum dehydration reaction 2h, then cool down to 75 ℃ and add a certain amount of cyclohexanone (consumption is 10 times of hyperbranched hydroxyl resin quality ) is dissolved, then it is placed in 15 DEG C, and then a certain amount of octane is added (the amount is 10 times the mass of the hyperbranched hydroxy resin) to precipitate the product crystals, and vacuum-dried to obtain the hyperbranched hydroxy resin;

[0040] (2) Toluene diisocyanate (consumption is 12 times the molar weight of castor oil) and dibutyltin dilaurate (consumption is 0.15% of the weight of castor oil-based hyperbranched UV photocurable urethane acrylate prepolymer) in 25 ℃ constant temperature water bath %) into the hyperbranched hydroxy resin prep...

Embodiment 3

[0043] (1) Add metered dimethylolpropionic acid, castor oil (the molar ratio of castor oil to dimethylolpropionic acid is 1:9) and 1-(3-dimethylaminopropyl )-3-ethylcarbodiimide hydrochloride (the amount used is 2% of the molar amount of dimethylolpropionic acid), stirred and heated up to 130°C for vacuum dehydration for 2.5h, then cooled to 68°C and added Dissolve a certain amount of methyl ethyl ketone (the amount is 10 times the mass of the hyperbranched hydroxyl resin), and then place it at 10°C, and then add a certain amount of n-hexane (the amount is 10 times the mass of the hyperbranched hydroxyl resin) to precipitate the product crystallization , vacuum drying to obtain hyperbranched hydroxyl resin;

[0044] (2) p-phenylene diisocyanate (consumption is 12 times of castor oil molar weight) and dibutyltin dilaurate (consumption is castor oil base hyperbranched UV photocurable urethane acrylate prepolymer weight in 20 ℃ constant temperature water bath) The mixture of 0.1...

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Abstract

The invention belongs to the field of UV curable high-molecular materials and in particular relates to castor-oil-based hyperbranched UV curable polyurethane acrylate and a preparation method and application thereof. The preparation method comprises the steps: firstly, dyhydroxyl propionic acid and castor oil are prepared into hydroxyl terminatedend capped polyfunctional hyperbranched resin through decompression esterification reaction; then a mixture of polyisocyanate and a catalyst is added to react for 2 to 3h; then the certain amount of active diluting monomer is added in stirring to dissolve isocyanato terminatedend capped hyperbranched resin; finally, metric (methyl) acrylate hydroxyalkyl ester is added to react with a polymerization inhibitor for 1.5 to 2.5h to obtain the castor-oil-based hyperbranched UV curable polyurethane acrylate. According to the castor-oil-based hyperbranched UV curable polyurethane acrylate, the castor oil is utilized as a polyurethane raw material; thus, the application range of natural renewable biomass grease products are expanded, the added value of the natural renewable biomass grease products is improved, and the positive popularization significance is achieved.

Description

technical field [0001] The invention belongs to the field of UV-curable polymer materials, and in particular relates to a castor oil-based hyperbranched UV-curable polyurethane acrylate and a preparation method and application thereof. Background technique [0002] In the field of traditional coatings and inks, linear polymers are mainly used as the basic film-forming substances, while hyperbranched polymers (Hyperbranched Polymers) have a series of unique physical and chemical properties such as low viscosity, high rheology, and multi-terminal functional groups. Coatings, inks, nanomedicine, catalysis and other fields have been one of the research hotspots in the field of polymers in recent years. Due to its simple synthesis method and excellent performance, hyperbranched polymers are considered to be good substitutes for dendrimer (Dendrimer), and are highly concerned by the scientific and industrial circles. The field of ink has great application prospects. However, the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/36C08G18/12C08F283/00C08F220/14C08F220/18C08F222/14C08F222/20C09D175/14C09D11/101C09D11/107C09D11/102
CPCC09D11/101C09D11/102C09D11/107C09D175/14C08F283/008C08G18/12C08G18/36C08G18/672C08G18/673C08F222/102C08F222/104C08F220/18C08F222/103C08F222/1006
Inventor 袁腾杨卓鸿刘英菊张超群周闯黄家健
Owner SOUTH CHINA AGRI UNIV
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