Preparation method of nanoscale temperature-controlled slow-release fragrant microcapsules

A microcapsule and slow-release technology, which is applied in the field of microcapsule preparation, can solve problems such as weak fragrance release rate and uneven influence of temperature on fragrance release rate, and achieve the effects of slowing down the release rate, reducing energy consumption, and strong physical adsorption

Active Publication Date: 2018-08-21
浙江中科微瑞新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above production method first microencapsulates the phase change material and then mixes it with the essence before coating. In fact, the control of the release rate of the fragrance by the phase change material is weak, and it is easy to cause uneven influence of temperature on the release rate of the fragrance.

Method used

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  • Preparation method of nanoscale temperature-controlled slow-release fragrant microcapsules
  • Preparation method of nanoscale temperature-controlled slow-release fragrant microcapsules
  • Preparation method of nanoscale temperature-controlled slow-release fragrant microcapsules

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preparation example Construction

[0033] The invention provides a method for preparing nano temperature-controlled slow-release aromatic microcapsules, comprising the following steps:

[0034] (1) Preparation of raw materials: the nano temperature-controlled slow-release aromatic microcapsules include the following raw materials in weight fractions, 20-60 parts of phase change material carrier, 20-60 parts of essence, 30-90 parts of monomer, 0.3- 1.0 parts of initiator, 3-6 parts of emulsifier and 200-600 parts of water;

[0035] (2) Preparation of core material components: Mix the phase change material carrier and essence in the above ratio in a closed container at 30-35°C at 800-1200r / min to form a core material component;

[0036] (3) Preparation of oil phase components: Stir and mix the core material components prepared in (2) with the monomer and initiator in (1) in a closed container at 30-35° C. to form oil phase components;

[0037] (4) Preparation of water phase components: Stir and activate the emul...

Embodiment 1

[0046] A preparation method of nanometer temperature-controlled slow-release aromatic microcapsules, comprising the following steps:

[0047] (1) Raw material preparation: the nano-temperature-controlled slow-release fragrance microcapsules include the following raw materials in weight fractions, 40 parts of butyl stearate, 20 parts of lavender essence, 50 parts of methyl methacrylate, 10 parts of n-butyl acrylate, 0.9 parts of azobisisoheptanonitrile, 4.8 parts of sodium dodecylbenzenesulfonate and 480 parts of water;

[0048] (2) Preparation of the core material component: Stir and mix the above-mentioned butyl stearate and essence in a closed container at 32° C. at 1000 r / min to form the core material component;

[0049] (3) Preparation of oil phase components: combine the core material components prepared in (2) with methyl methacrylate, n-butyl acrylate and azobisisoheptanonitrile in (1) at 32°C in a closed container Stir and mix to form oil phase components;

[0050] (...

Embodiment 2

[0055] A preparation method of nanometer temperature-controlled slow-release aromatic microcapsules, comprising the following steps:

[0056] (1) Preparation of raw materials: the nano temperature-controlled slow-release aromatic microcapsules include the following raw materials in weight fractions, 40 parts of methyl stearate, 20 parts of rose essence, 50 parts of methyl methacrylate, 10 parts of n-butyl acrylate, 0.9 parts of azobisisoheptanonitrile, 4.8 parts of sodium dodecylbenzenesulfonate and 480 parts of water;

[0057] (2) Preparation of the core material component: Stir and mix the above-mentioned butyl stearate and essence in a closed container at 32° C. at 1000 r / min to form the core material component;

[0058] (3) Preparation of oil phase components: combine the core material components prepared in (2) with methyl methacrylate, n-butyl acrylate and azobisisoheptanonitrile in (1) at 32°C in a closed container Stir and mix to form oil phase components;

[0059] (...

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Abstract

The invention discloses a preparation method of nanoscale temperature-controlled slow-release fragrant microcapsules. The nanoscale temperature-controlled slow-release aromatic microcapsules are prepared with the method comprising steps as follows: a co-melt is formed from a phase change material as a carrier and perfume and is taken as a core material, a polymer is taken as a wall material, and mixing, emulsifying and emulsion polymerization processes are performed. The nanoscale temperature-controlled slow-release fragrant microcapsules have two slow-release mechanisms: firstly, the phase change material is used as the carrier to realize temperature-controlled slow release; secondly, the dense polymer wall material is used. The product is environmentally friendly, non-toxic, high in mechanical strength and good in heat resistance, and can be used for fragrance enhancement and retaining of textiles, daily necessities and buildings.

Description

technical field [0001] The invention relates to a method for preparing microcapsules, in particular to a method for preparing nano-scale aromatic microcapsules with temperature-controlled aroma release rate. Background technique [0002] Fragrance microcapsules are formed by wrapping liquid essence with film-forming materials to form tiny particles. If a certain amount of phase change material that can form a eutectic with the essence is added in the fragrance microcapsule core material. Then below the melting temperature of the phase change material, the solid phase change material in the core material can wrap the essence, realize self-sealing, and greatly reduce the release rate of the essence; when the external temperature is greater than the melting point of the phase change material, the essence can pass through melting. The phase change material and the capsule wall with microporous structure are released quickly, and the temperature-controlled and sustained release ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M23/12D06M13/224D06M13/00D06M15/263B01J13/14C08F2/26C08F220/14C08F220/18C08F2/44
CPCB01J13/14C08F2/26C08F2/44C08F220/14D06M13/005D06M13/224D06M15/263D06M23/12C08F220/1804
Inventor 张国庆崔贞超周岚刘国金姚菊明
Owner 浙江中科微瑞新材料股份有限公司
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