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Water-soluble fragrance microcapsule having slow release characteristics and preparation method thereof

A water-soluble, microcapsule technology, applied in the preparation of water-soluble aromatic microcapsules, water-soluble aromatic microcapsules and the field of preparation thereof, can solve the problems of application limitation, low coating rate, influence on the smell of microcapsule products, etc. Storage performance, simple preparation process, small loss of aromatic substances

Inactive Publication Date: 2012-06-27
SHANDONG HAOYUE NEW MATERIALS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for the coating of aromatic substances, there are some limitations in the above-mentioned techniques for preparing water-soluble microcapsules, such as the need for high-temperature hot air treatment in the spray-drying process, which will volatilize some low-boiling substances in the aromatic essential oil , thereby affecting the odor of microencapsulated products
However, the coating rate of β-cyclodextrin inclusion process is low and can only cover substances smaller than the cavity of cyclodextrin, so its application is also limited

Method used

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  • Water-soluble fragrance microcapsule having slow release characteristics and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) Add 500g of porous starch to the mixing machine, and the oil absorption value of the starch is >1.5g / g. Add 100g of oil-soluble lemon essence in batches while stirring, so that the essence is evenly absorbed into the porous starch;

[0019] (2) Add 1000g of polyethylene glycol 6000 into a stirred tank with a heating device, heat to 80°C to completely melt the polyethylene glycol, and add the polyethylene glycol prepared in step (1) under stirring conditions. The prepared porous starch that has absorbed essential oils was stirred quickly to disperse the porous starch evenly in polyethylene glycol, and then the mixture was quickly poured into an open pan and cooled naturally below 25°C. The polyethylene glycol to be coated with porous starch After the alcohol is completely cooled and solidified, it is pulverized to an average particle size of 220 μm to obtain water-soluble aromatic microcapsules with sustained release characteristics.

Embodiment 2

[0021] In embodiment 1, the lemon essence in step 1 is changed into rose essence, and all the other are with embodiment 1. The particle size of the product is 200-300 μm.

Embodiment 3

[0023] In Example 1, the polyethylene glycol 6000 in step 2 was replaced with Polyethylene Glycol 2000, and the rest were the same as in Example 1. The average particle size of the product is 300 μm.

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Abstract

The invention provides a water-soluble fragrance microcapsule having slow release characteristics and a preparation method thereof. A capsule core of the microcapsule is porous starch having adsorbed oil-soluble essential oil, and a capsule wall is water-soluble polyethylene glycol. The microcapsule does not release fragrance when the microcapsule does not contact with aqueous liquid like body fluid and has good storage performance; when the microcapsule contacts with aqueous liquid, the water-soluble capsule wall at the exterior of the microcapsule is dissolved in the aqueous liquid, so capsule core substances having fragrance permeate micropores in the porous starch at an internal layer and are slowly released, thereby achieving the goals of lasting shielding of stink and removal of a peculiar smell. In the preparation process of the microcapsule, loss of the fragrant substances is small, the preparation method is simple and is suitable for industrial production, and an absorbent resin is endowed with special deodorizing capability when the absorbent resin is combined with the microcapsule.

Description

technical field [0001] The present invention relates to a water-soluble aromatic microcapsule with sustained-release characteristics and a preparation method thereof, more particularly, the present invention relates to a long-lasting release of aromatic substances when used in an absorbent body of hygienic materials so as to mask odor The invention discloses a method for preparing water-soluble aromatic microcapsules with (odor) effect, belonging to the technical field of microcapsule preparation. Background technique [0002] Adding aromatic substances into the water-absorbent resin can make the water-absorbent resin emit fragrance when absorbing body fluids (such as urine), thereby covering the odor of urine and solid excrement, and achieving a deodorizing effect. However, the aromatic substance has a low boiling point and cannot be stored for a long time after being mixed with the water-absorbing resin. By microencapsulating aroma substances such as essence, a protective...

Claims

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Application Information

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IPC IPC(8): B01J13/02C11B9/00
Inventor 杨志亮周晓东杨志兴范传杰胡延杰
Owner SHANDONG HAOYUE NEW MATERIALS CO LTD
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