Double-layer coated essence microcapsule and preparation method thereof

A fragrance microcapsule and double-layer coating technology, which is applied in the direction of microcapsule preparation, microsphere preparation, essential oil/fragrance, etc., can solve the problem of insufficient mechanical strength and heat resistance of the wall material during the fragrance retention time, and cannot meet the requirements of polymer materials. Problems such as thermoforming processing requirements, to achieve excellent mechanical properties such as heat resistance and toughness, improved mechanical properties of capsule materials, and easy to uniformly disperse the effect

Active Publication Date: 2013-01-30
湖南方税达科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the wall materials of the existing essence microcapsules have insufficient fragrance retention time, wall material mechanical strength, and heat resistance, and cannot meet the processing requirements of thermoforming polymer materials.

Method used

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  • Double-layer coated essence microcapsule and preparation method thereof
  • Double-layer coated essence microcapsule and preparation method thereof
  • Double-layer coated essence microcapsule and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of preparation method of double-layer coated essence microcapsules of the present invention comprises prepolymer synthesis, emulsification dispersion, microcapsules are coated twice continuously and post-processing steps:

[0032] 1. Prepolymer synthesis: The experimental equipment is a thermometer, a stirrer, a three-necked flask with a reflux condenser, and a beaker.

[0033] Add 0.36g of gelatin, 3.6g of melamine, 4.0g of 37% formaldehyde and 25g of water into a 250ml three-neck flask respectively, adjust the pH value to 8.0 with sodium hydroxide solution, then heat to 65°C, keep the reaction solution for 20- After 60 minutes, a gelatin-modified resin prepolymer solution was prepared and cooled to room temperature for later use.

[0034] 2. Emulsification and dispersion: Add 180g of water with 0.2g of gum arabic dissolved in a 500ml beaker, turn on the homogeneous emulsifier (model ESR, Shanghai Specimen Model Factory), add 12.0g of jasmine and strong flavor (...

Embodiment 2

[0038]

Embodiment 3

[0040]

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Abstract

The invention discloses a double-layer coated essence microcapsule and a preparation method thereof. The essence microcapsule takes an oil soluble liquid essence as a capsule core, a gelatin modified amino resin composite material as a first-layer capsule wall and an acrylate polymer as a second-layer capsule wall, wherein a grafting transition area is formed by graft copolymerization of gelatin and acrylate between the first-layer capsule wall and the second-layer capsule wall. The preparation method comprises a step of prepolymer compounding, emulsification dispersion, microcapsule continuous double-layer coating and post-treatment. Compared with a single-layer coated microcaposule, the essence microcapsule has the advantages that the slow release performance, the heat resistance performance and the capsule wall material mechanical property are greatly improved, and the essence microcapsule can be used for most of microencapsulated essence products processed by heat extrusion molding of high molecular materials.

Description

technical field [0001] The invention relates to an essence microcapsule and a preparation method thereof. Background technique [0002] Microcapsule technology has been used in industry, agriculture, medical treatment and other fields, such as pressure-sensitive copy paper, microencapsulated red phosphorus flame retardant, slow release and controlled release of drugs or flavors, etc. Depending on the application, the microcapsule wall material can protect the capsule core substance from the external environment, or slow down the release rate of volatile substances. [0003] Essence has a pleasant smell, which can eliminate peculiar smell and improve people's quality of life. It is widely used in people's daily life, but essence is generally a highly volatile substance with low boiling point, high volatility, short fragrance retention time and With chemical reactivity and other characteristics, the preservation of flavors and the stability of adding them to products have bec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11B9/00B01J13/02B01J13/20
Inventor 吕建平彭敏蔡秀丽李玉新苏龙湘熊孝勇黄琪吉换装
Owner 湖南方税达科技有限公司
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