Rose essential oil microcapsule emulsion, and preparation method and application thereof

A technology of rose essential oil and microcapsules, applied in microcapsule preparations, microsphere preparation, paints containing biocides, etc., can solve problems such as insufficient slow release and durability, loss of effective components of core materials, and inability to meet usage requirements. , to avoid loss of core material, good conditioning and long service life

Active Publication Date: 2019-11-29
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of microcapsules in this patent is to first encapsulate the core material and then wrap it, which is very likely to cause uneven release rate. If the secondary coating effect is not good and it will cause damage to the first layer of wall material, indirectly Causes the loss of active ingredients in the core material, insufficient slow-release and persistence, and cannot meet the needs of use

Method used

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  • Rose essential oil microcapsule emulsion, and preparation method and application thereof
  • Rose essential oil microcapsule emulsion, and preparation method and application thereof
  • Rose essential oil microcapsule emulsion, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] a) Add 0.5g Tween 80 to 50ml, pH 3.5 aqueous acetic acid solution, stir and mix well; then add 1g chitosan, stir and mix well; dissolve 2.0g polyvinyl alcohol in 28g hot water, then poly Vinyl alcohol aqueous solution was added to the aqueous acetic acid solution containing chitosan and Tween 80, stirred and mixed evenly; then 1.8g of rose damascena essential oil was added, stirred at 40°C for 45 minutes at a stirring speed of 600rpm, stirred and mixed evenly to obtain colostrum solution;

[0057] b) Add 3 ml of an aqueous solution of 10 wt% span80 dropwise to the colostrum solution, and perform an emulsification reaction at 40° C. at a stirring speed of 600 rpm for 3 hours to obtain a composite emulsified solution;

[0058] c) Slowly add 3ml, 25wt% glutaraldehyde aqueous solution dropwise to the composite emulsified solution, carry out cross-linking reaction at 40° C. and a stirring speed of 700 rpm for 3 hours to obtain rose essential oil microcapsule emulsion.

[00...

Embodiment 2

[0067] a) Add 0.8g Tween 60 to 53ml of acetic acid aqueous solution with a pH of 3.5, stir and mix well; then add 1.5g gelatin, stir and mix well; dissolve 1.8g sodium alginate in 30g water, and then dissolve Add it to the acetic acid aqueous solution containing gelatin and Tween 60, stir and mix evenly; then add 2.1g palm rose essential oil, stir at 40°C for 30 minutes at a stirring speed of 700rpm, stir and mix evenly to obtain a colostrum solution;

[0068] b) Add 4ml, 10wt% Turkish red oil aqueous solution dropwise to the colostrum solution, carry out the emulsification reaction at 40°C and a stirring speed of 700rpm for 2.5 hours to obtain a composite emulsified solution;

[0069] c) Slowly add 3.2ml, 10wt% vanillin aqueous solution dropwise to the composite emulsified solution, carry out cross-linking reaction at 40°C and at a stirring speed of 650rpm for 4 hours to obtain rose essential oil microcapsule emulsion.

Embodiment 3

[0074] a) Add 1g of Tween 60 to 55ml of aqueous hydrochloric acid solution with a pH of 2.5, stir and mix evenly; then add 2.0g of gum arabic, stir and mix evenly; dissolve 1.5g of polyvinyl alcohol in 29g of hot water, and Add the alcohol aqueous solution to the hydrochloric acid aqueous solution containing gum arabic and Tween 60, stir and mix evenly; then add 2.4g of rose damascena essential oil, stir at 40°C for 60 minutes at a stirring speed of 800rpm, stir and mix evenly to obtain a colostrum solution;

[0075] b) Add 5 ml of an aqueous solution of 10 wt% span80 dropwise to the colostrum solution, and perform an emulsification reaction at 40° C. at a stirring speed of 800 rpm for 1.5 hours to obtain a composite emulsified solution;

[0076] c) Slowly add 3.5ml, 10wt% cinnamaldehyde aqueous solution dropwise to the composite emulsified solution, carry out cross-linking reaction at 40° C. and a stirring speed of 700 rpm for 5 hours to obtain rose essential oil microcapsule ...

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Abstract

The invention discloses a rose essential oil microcapsule emulsion, and a preparation method and application thereof. The rose essential oil microcapsule emulsion is prepared a wall material A, a wallmaterial B and a core material through blending, emulsifying and crosslinking, wherein the wall material A is Arabic gum, gelatin or chitosan, the wall material B is polyvinyl alcohol or sodium alginate, and the core material is rose essential oil. A water-based coating containing the rose essential oil microcapsule can be prepared by adding the rose essential oil microcapsule emulsion into a water-based coating. The rose essential oil microcapsule emulsion prepared in the invention is long in service life, good in slow release effect, good in durability, high in compatibility with a coatingand easy to be uniformly dispersed in the coating; moreover, due to the unique pharmacological properties and bactericidal action of the rose essential oil, the water-based coating containing the roseessential oil microcapsule can effectively avoid the use of bactericides in the coating, is safe and environment-friendly, and has good conditioning effect on people with long-term insomnia and irritable mood.

Description

technical field [0001] The invention relates to a rose essential oil microcapsule emulsion, a preparation method thereof and an application in water-based paint, belonging to the technical field of water-based paint. Background technique [0002] Water-based coatings are coatings that do not contain or contain a small amount of solvents. They have the advantages of energy saving, environmental protection, and low pollution. According to relevant data, water-based coatings currently account for about 30% of the total industrial coatings. Water-based coatings are widely used in a wide range of applications. When water-based coatings are used indoors, the performance of the coating itself has a greater impact on the indoor environment. However, the current water-based coatings are monotonous in performance and cannot meet the needs of indoor use. Water-based coatings need to be improved. Modification to develop functional waterborne coatings with multiple functions. [0003] A...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/14C09D7/65C09D133/04B01J13/14
CPCB01J13/14C08L2205/035C09D5/14C09D133/04C09D7/65C08L43/04C08L5/00C08L5/08C08L29/04
Inventor 陈亚博温绍国王继虎李思为张继嘉王燕
Owner SHANGHAI UNIV OF ENG SCI
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