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Reversible thermochromic organic material microcapsule

An organic material and microcapsule technology, applied in the field of thermochromic materials, can solve the problems of inappropriate size of microcapsules, uneven particle size, high price, etc., and achieve the effects of suitable size of microcapsules, good temperature change effect, and uniform particle size.

Inactive Publication Date: 2011-09-21
陈铨荣
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current watermark anti-counterfeiting, fluorescent ink anti-counterfeiting, colored fiber anti-counterfeiting, and laser holographic anti-counterfeiting have great limitations such as high price, forgery, etc.
However, the existing microencapsulated organic reversible thermochromic materials have poor controllability, unsuitable microcapsule size, uneven particle size, and poor temperature change effect

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Reversible thermochromic organic material microcapsules, including solvent, organic chromogenic agent, chromogenic agent, emulsifier and shell material, organic chromogenic agent and chromogenic agent are added to the organic solvent to dissolve, and emulsifier is added to disperse to the required particle size The shell material is then added to make microcapsules, wherein the emulsifier is maleic anhydride styrene.

[0017] On the basis of Example 1, further, the solvent is selected from cetyl alcohol, myristyl alcohol, lauryl alcohol, lauric acid or stearic acid. One of them can be selected as the solvent according to the needs of the actual situation, because the mixed use is not as effective as the single use. Among them, cetyl alcohol, myristyl alcohol or lauryl alcohol have the best effect.

[0018] On the basis of Example 1, further, the organic chromogen is selected from crystal violet lactone (CVL), ODB (N-102), thermosensitive green or thermosensitive red sa...

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PUM

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Abstract

The invention relates to a reversible thermochromic organic material microcapsule which comprises a solvent, an organic chromogenic reagent, a developer, an emulsifier and a shell material. The reversible thermochromic organic material microcapsule is prepared by the following steps: dissolving the organic chromogenic reagent and developer in the organic solvent, adding the emulsifier, dispersing to required granularity, and adding the shell material to obtain the microcapsule, wherein the emulsifier is styrene maleic anhydride. By using the styrene maleic anhydride as the emulsifier, the invention overcomes the defects in other modes for preparing microcapsules, and has the advantages of high controllability, suitable microcapsule size, uniform granularity and favorable thermochromic effect.

Description

technical field [0001] The invention relates to the technical field of thermochromic materials, in particular to a reversible thermochromic organic material microcapsule. Background technique [0002] Reversible thermochromic materials refer to a class of functional materials that can change color when the ambient temperature changes, including inorganic, organic, and liquid crystal. The toxicity of the inorganic type hinders its application, the liquid crystal type raw material is expensive, and the organic type can choose different combinations according to the needs of the color. [0003] The microencapsulated organic thermochromic material is very suitable for the anti-counterfeiting of bills and trademarks and other products, and has the characteristics of easy identification, difficult forgery and low cost. However, the current watermark anti-counterfeiting, fluorescent ink anti-counterfeiting, colored fiber anti-counterfeiting, and laser holographic anti-counterfeiti...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K9/02B01J13/02
Inventor 陈铨荣
Owner 陈铨荣
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