Light-cured polyurethane acrylate emulsion containing mosquito-repellent plant extract and applied to spinning coating

A technology of polyurethane acrylate and mosquito repellent plants, which is applied in polyurea/polyurethane coatings, biocide-containing paints, antifouling/underwater coatings, etc. It can solve the problem of no polymer emulsion and achieve excellent film-forming properties , clean preparation process and high solid content

Pending Publication Date: 2019-04-26
四川省纤维检验局
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Researchers have done a lot of work on the extraction of mosquito repellent plants and their application in interior wall coatings or pesticides, but there is almost no research on the direct preparation of polymer emulsions containing mosquito repellent extracts for textile coatings, especially those containing nano Photocurable urethane acrylate emulsions of fillers and mosquito repellent extracts have not been reported

Method used

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  • Light-cured polyurethane acrylate emulsion containing mosquito-repellent plant extract and applied to spinning coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Preparation of insect repellent plant extract:

[0027] Add 20g of pyrethrum powder with a moisture content of no more than 2% to 220g of absolute ethanol, reflux extraction for 5 times, the extraction temperature is 75°C, about 48min each time, filter the extract, and combine the filtered extract, after decolorization treatment Concentrate to an extract solution with a mass concentration of about 48%.

[0028] Preparation of emulsion:

[0029] (1) 5.92g dimethylolbutyric acid and 18g side chain containing non-ionic hydrophilic group dibasic alcohol (YMERN-120, Perstorp company), 120g polycaprolactone diol with molecular weight 1000 is heated to 112 ℃ Melt and mix, dehydrate at a vacuum degree of 0.09MPa, add 56.2g of hexamethylene diisocyanate (HDI), and react at a temperature of 98°C for 92min to obtain a polyurethane prepolymer (a);

[0030] (2) Add 26.5g of hydroxypropyl acrylate to the prepolymer (a), control the temperature at 93°C and continue the reaction for ...

Embodiment 2

[0033] Preparation of insect repellent plant extract:

[0034] Add 20g of pyrethrum powder with a water content not exceeding 2% to 260g of absolute ethanol, reflux extraction 6 times, the extraction temperature is 75°C, and each time is about 43min, filter the extract, and combine the filtered extract, after decolorization treatment Concentrate into an extract with a mass concentration of about 42%.

[0035] The preparation of emulsion of the present invention:

[0036] (1) 5.92g dimethylolbutyric acid and 22g side chain containing non-ionic hydrophilic group dibasic alcohol (YMER N-120, Perstorp company), 140g polycaprolactone diol of molecular weight 1000 is warmed up to 117 Melt and mix at ℃, dehydrate at a vacuum degree of 0.08MPa, add 61.1g of hexamethylene diisocyanate (HDI), and react at a temperature of 93℃ for 100min to obtain a polyurethane prepolymer (a);

[0037] (2) Add 23.1g of hydroxypropyl acrylate to the prepolymer (a), control the temperature at 88°C and c...

Embodiment 3

[0040] Preparation of insect repellent plant extract:

[0041] Add 20g of lavender powder with a moisture content of no more than 2% to 260g of absolute ethanol, reflux extraction for 7 times, the extraction temperature is 75°C, about 38min each time, filter the extract, and combine the filtered extract, after decolorization Concentrate into an extract solution with a mass concentration of about 36%.

[0042] The preparation of emulsion of the present invention:

[0043] (1) 5.92g dimethylol butyric acid and 24g side chain containing non-ionic hydrophilic group glycol (YMER N-120, Perstorp company), 160g polytetrahydrofuran diol with a molecular weight of 2000 is heated to 123 ℃ for melting Mix, dehydrate at a vacuum degree of 0.07MPa, add 54.4g of isophorone diisocyanate (IPDI), and react at a temperature of 93°C for 100min to obtain a polyurethane prepolymer (a);

[0044] (2) Add 11.7g of hydroxyethyl acrylate to the prepolymer (a), control the temperature at 80°C and cont...

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Abstract

The invention discloses a light-cured polyurethane acrylate emulsion containing a mosquito-repellent plant extract and applied to a spinning coating. The light-cured polyurethane acrylate emulsion isprepared with a method comprising steps as follows: dimethylolbutanoic acid, diols containing non-ionic hydrophilic groups in side chains and diols with molecular weight of 1000-2000 are subjected tomelt mixing, after vacuum dewatering is performed, diisocyanate is added, a mixture is subjected to a reaction at 80-100 DEG C, and a polyurethane prepolymer (a) is prepared; a light-cured end-cappingagent with residual NCO mole number of 40%-70% and containing active functional groups and carbon-carbon double bonds is added to the prepolymer (a), cooling is performed after the reaction, a salt-forming agent is added for a neutralization reaction, and a water-dispersible polyurethane acrylate prepolymer (b) is obtained; the prepolymer (b) is added to an insect-repellent plant extracting solution and mixed uniformly, then a mixed solution is dispersed in deionized water, a nano dispersion and a coupling agent are added for continuous stirring reaction, and therefore, the light-cured polyurethane acrylate emulsion containing the mosquito-repellent plant extract and applied to the spinning coating is obtained and has the characteristics of high solid content, short curing time, stable mosquito-repellent function, ultraviolet resistance and aging resistance.

Description

technical field [0001] The invention relates to a polyurethane acrylate emulsion, in particular to a photocurable polyurethane acrylate emulsion containing mosquito repellent plant extracts used for textile coatings. technical background [0002] Plant extraction and application have a history of thousands of years. my country's deep understanding and flexible use of Chinese medicinal materials have promoted Chinese medicine to become a well-deserved "national quintessence". The application of plant polyphenols in leather tanning, oil field chemistry, plastics industry, etc. It also promotes the development and innovation of modern industry. Mosquito repellent plants can release odors or substances through leaves, flowers, stems and other tissues or organs to drive or kill mosquitoes and other insects. Their releases or extracts are green and harmless to synthetic pesticides. With the improvement of people's living standards and health With the enhancement of awareness, natu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/67C08G18/66C08G18/48C08G18/42C08G18/34C08K5/00C08K3/015C08K3/36C08K3/22C09D175/14C09D5/14
CPCC08G18/12C08G18/348C08G18/4277C08G18/4854C08G18/672C08K3/015C08K3/22C08K3/36C08K5/0058C08K2003/2227C08K2201/011C09D5/14C09D175/14C08G18/0823C08G18/6692C08G18/6659
Inventor 陈政曾蓉谭淋吴楠刘铁砚赵瑞方
Owner 四川省纤维检验局
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