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Preparation method of fragrant capsules

A fragrance and capsule technology, which is applied in the field of preparation of intelligent fragrance capsules, can solve problems that have not been reported, achieve great application prospects and prolong the use time

Inactive Publication Date: 2015-03-25
TIANJIN POLYTECHNIC UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

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  • Preparation method of fragrant capsules
  • Preparation method of fragrant capsules

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Embodiment 1

[0019] A preparation method of intelligent essence microcapsules, comprising the steps of:

[0020] (1) Weigh 100g of hexadecyl acrylate and 2g of azobisisobutyronitrile and mix evenly, pour into 500g of polyvinyl alcohol solution with a concentration of 2wt%, stir and mix evenly to obtain a uniform and stable solution. After raising the temperature to 80° C. and reacting for 3 hours, polylauryl acrylate particles were obtained, which were washed and dried for use.

[0021] (2) 80 g of polyhexadecyl acrylate particles and 80 g of cypress essential oil essence were dissolved in 100 g of dichloromethane to obtain a uniform oil phase solution. Disperse the oil phase solution in 1000g of 5wt% polyvinyl alcohol aqueous solution, vigorously stir and emulsify to obtain a stable emulsion with an average particle diameter of about 20 microns.

[0022] (3) Gradually raise the temperature of the stable emulsion obtained in step (2) to 40° C., and continue stirring for 5 hours to remove ...

Embodiment 2

[0025] A preparation method of intelligent essence microcapsules, comprising the steps of:

[0026] (1) After weighing 1Kg of octadecyl methacrylate and 1g of azobisisoheptanonitrile and mixing uniformly, pour 5Kg concentration into 5wt% sodium lauryl sulfate solution and fully stir and mix uniformly to obtain a uniform stable solution . After heating up to 60°C, react for 3 hours to obtain polyoctadecyl methacrylate particles, which are washed and dried for use.

[0027] (2) 500 g of polyhexadecyl acrylate particles and 10 g of synthetic musk were dissolved in 500 g of ethyl acetate to obtain a uniform oil phase solution. Disperse the oil phase solution in 5kg of 5wt% styrene maleic anhydride aqueous solution, vigorously stir and emulsify to obtain a stable emulsion with an average particle diameter of about 5 microns.

[0028] (3) Gradually raise the temperature of the stable emulsion obtained in step (2) to 78° C., and continue stirring for 5 hours to remove ethyl acetate...

Embodiment 3

[0030] A preparation method of intelligent essence microcapsules, comprising the steps of:

[0031] (1) After weighing 500 g of behenyl acrylate and 10 g of benzoyl peroxide and mixing them uniformly, pour them into 2.5 kg of 2 wt % sodium alginate solution, stir and mix evenly to obtain a uniform and stable solution. After raising the temperature to 85° C. and reacting for 4.5 hours, polybehenyl acrylate particles were obtained, which were washed and dried for use.

[0032] (2) 350 g of polybehenyl acrylate particles and 3.5 kg of rose essential oil essence were dissolved in 500 g of 1,2-dichloroethane to prepare a uniform oil phase solution. Disperse the oil phase solution in 5kg of 5wt% gelatin aqueous solution, emulsify with vigorous stirring, and obtain a stable emulsion with an average particle diameter of about 80 microns.

[0033] (3) Gradually raise the temperature of the stable emulsion obtained in step (2) to 68° C., and continue stirring for 12 hours to remove the...

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Abstract

The invention provides a novel capsule capable of intelligently regulating and releasing fragrance according to the environment temperature and a preparation method of the novel capsule. The preparation method of the novel capsule comprises the following steps: (1) carrying out free radical polymerization on (methyl) alkyl acrylate to obtain a comb-shaped polymer; (2) commonly dissolving the comb-shaped polymer and essence in a low-boiling-point organic solvent to obtain a uniform organic phase; and (3) adding the organic phase into an emulgator-containing aqueous solution for emulsifying, thus obtaining emulsion droplets with particle range of 10nm-5mm, then increasing the temperature according to programs for removing the low-boiling-point organic solvent in the emulsion droplets, filtering and washing the emulsion droplets to obtain an essence capsule of a core-shell structure. The preparation method of the novel capsule is simple in process, low in requirement on equipment and mild in reaction condition, has an energy-saving effect and is suitable for large-scale production; the wall of the prepared essence capsule is the comb-shaped polymer of the crystallizable side chain; the length or structure of the side chain can be regulated and controlled so as to control the crystallization temperature of the side chain, so that the release rate of the essence of the capsule under different temperatures can be intelligently regulated and controlled. The intelligent fragrant capsule is capable of adjusting the release rate of the fragrant smell according to the outside temperature change; the intelligent fragrant capsule can be directly applied to the intelligent thermoregulation textile field and the cosmetic field.

Description

technical field [0001] The invention relates to a method for preparing an aromatic capsule, in particular to a method for preparing an intelligent aromatic capsule with an environmental temperature response function. Background technique [0002] Essence is closely related to people's daily life. Moderate fragrance can refresh people's body and mind, relieve pressure on the body, and elevate people's emotions. The concentration of fragrance released directly from the fragrance liquid or solid is uncontrollable and the duration is very limited. Capsule technology is a technology that wraps solid or liquid with film-forming materials to form particles. In this way, the release rate of the capsule core can be controlled by selecting the type of capsule wall material or adjusting the microstructure of the capsule wall material. People such as Li Guilian first wrapped the lavender essential oil capsule core with melamine formaldehyde resin in the patent "preparation method and a...

Claims

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Application Information

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IPC IPC(8): C11B9/00
CPCB01J13/14C11B9/00C11B9/0015C11B9/0053C11B9/0061
Inventor 李伟张兴祥宗记文马艳杰张宁欣
Owner TIANJIN POLYTECHNIC UNIV
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