Preparation method of uniform and stable type liquid crystal microcapsule material

A stable, microcapsule technology, used in liquid crystal materials, microcapsule preparations, microsphere preparation, etc., can solve the problems of poor storage stability, poor size uniformity, etc., to reduce uneven dispersion performance, improve stability performance, The effect of easy availability of raw materials

Inactive Publication Date: 2018-11-13
FOSHAN LINGCHAO NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a method for preparing a uniform and stable liquid crystal m

Method used

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  • Preparation method of uniform and stable type liquid crystal microcapsule material

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example 1

[0017] Take the pig brain and wash it, remove the fat and fascia, freeze-dry it in vacuum, grind it and pass it through a 200-mesh sieve to get the sieved powder, add the sieved powder to acetone at a mass ratio of 1:10, stir and mix Heated in a water bath at 45°C for 1 hour and allowed to cool to room temperature, filtered and collected the filtrate, then crystallized in a water bath at 0°C, collected the crystals and washed 3 times with 90% ethanol solution, and dried naturally to obtain the modified cholesteryl ester ; Then in parts by weight, weigh 45 parts of xylene, 10 parts of p-benzenemethanesulfonic acid, 6 parts of polyglycerol and 10 parts of modified cholesteryl ester in a beaker, stir and mix and heat at 55°C Reflux treatment for 1 hour, let it cool down to room temperature and collect the mixed solution. According to the volume ratio of 1:1, stir the mixed solution with acetone and place it at 0°C for crystallization in a water bath again. Collect the crystals and...

example 2

[0019] Take the pig brain and wash it, remove the fat and fascia, freeze-dry it in vacuum, grind it and pass it through a 200-mesh sieve to get the sieved powder, add the sieved powder to acetone at a mass ratio of 1:10, stir and mix Heated in a water bath at 47°C for 2 hours and allowed to cool to room temperature, filtered and collected the filtrate, then crystallized in a water bath at 2°C, collected the crystals and washed 4 times with 90% ethanol solution, and dried naturally to obtain the modified cholesteryl ester ; Then weigh 47 parts of xylene, 12 parts of p-benzenemethanesulfonic acid, 7 parts of polyglycerol and 12 parts of modified cholesteryl ester in a beaker, stir and mix and heat at 57°C Reflux for 2 hours, let stand to cool to room temperature and collect the mixed solution. According to the volume ratio of 1:1, stir the mixed solution with acetone and place it at 2°C for crystallization in a water bath again. Collect the crystals and vacuum freeze-dry to obtai...

example 3

[0021] Take the pig brain and wash it, remove the fat and fascia, freeze-dry it in vacuum, grind it and pass it through a 200-mesh sieve to get the sieved powder, add the sieved powder to acetone at a mass ratio of 1:10, stir and mix Heated in a water bath at 50°C for 2 hours and allowed to cool to room temperature, filtered and collected the filtrate, then crystallized in a water bath at 5°C, collected the crystals and washed 5 times with a 90% ethanol solution, and dried naturally to obtain the modified cholesteryl ester ; Then weigh 50 parts of xylene, 15 parts of p-benzenemethanesulfonic acid, 8 parts of polyglycerol and 10-15 parts of modified cholesteryl ester in a beaker, stir and mix and place at 60°C Heating under reflux for 2 hours, standing to cool to room temperature and collecting the mixed solution, according to the volume ratio of 1:1, stirring the mixed solution with acetone and placing it at 5°C for crystallization in a water bath again, collecting the crystals...

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Abstract

The invention relates to a preparation method of a uniform and stable type liquid crystal microcapsule material, and belongs to the technical field of a liquid crystal material. The preparation methodhas the technical scheme that cholesterol ester materials are prepared from pig brain raw materials; the raw materials can be easily obtained; the price is cheap; mixed liquid crystals most show bright colors; meanwhile, IPDI (isophorone diisocyanate), liquid crystals and an organic solvent form O/W emulsion under the effect of emulsifying agents; along with the heating and the addition of catalysts, isocyanate groups in the IPDI and hydroxy of water react to generate amidogen in the IPDI; then, the amidogen and the isocyanate groups take polymerization reaction on an oil-water two-phase interface; a wall urea coated cholesteric phase liquid crystal microcapsule is generated. The stable grafting coating is formed, the dispersion nonuniformity performance among materials is effectively reduced; along with the environment change in the use process, the liquid crystal microcapsule material migrates from inside to the surface; stable bonding and coating modification are formed; the stableperformance of the liquid crystal microcapsule material is greatly improved.

Description

technical field [0001] The invention relates to a preparation method of a uniform and stable liquid crystal microcapsule material, belonging to the technical field of liquid crystal materials. Background technique [0002] The liquid crystal phase is a state in which certain substances, through intermolecular self-assembly under certain external conditions, are characterized by the combination of liquid fluidity and crystal order. This state is the liquid crystal state. The main microscopic difference between crystals, liquid crystals, and liquids is that both liquid crystals and crystals have orientation sequences; as for position sequences, liquid crystals do not, but crystals have them; liquids are isotropic. The main difference on the macroscopic level is that: mechanical properties such as fluidity, viscosity, deformation, etc., are unique to liquids, and liquid crystals also exist within a certain temperature range; spatial anisotropy, such as dielectric properties, ma...

Claims

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Application Information

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IPC IPC(8): B01J13/14C08G18/32C08G18/75C09K19/36
CPCB01J13/14C08G18/3234C08G18/755C09K19/36
Inventor 裘友玖韩桂林
Owner FOSHAN LINGCHAO NEW MATERIAL CO LTD
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