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Water-coated microcapsule using water-insoluble polymer as capsule material, and preparation method thereof

A water-insoluble, microcapsule technology, applied in the field of preparations and its processing, can solve the problems of high preparation cost, difficult washing, low efficiency, etc.

Inactive Publication Date: 2018-12-18
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, using the above two technical solutions to prepare water-encapsulated capsules is not only inefficient, but also the melting temperature of the film layer hot melt adhesive is usually above 100°C, which may cause the water droplet solution to boil and vaporize at the moment of contact with the aqueous solution, and may also cause the Membrane material solidifies quickly and cannot cover water droplets, and its subsequent treatment process is also relatively complicated, especially after silicone oil treatment, washing is difficult and the preparation cost is also high

Method used

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  • Water-coated microcapsule using water-insoluble polymer as capsule material, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Dissolve 5.6 parts of polystyrene in 73.8 parts of 1,1-dichloroethane to make the viscosity reach 300mPa.S, then add 20 parts of styrene and 0.4 parts of divinylbenzene in sequence (the amount added is the mass of styrene 2.0% of styrene mass) and 0.2 parts of azobisisobutyronitrile (addition amount is 1.0% of styrene mass), mix uniformly to make it a density of 1.15g / cm 3 The mixed organic solution is set aside. Prepare 85.5 parts of pure water and 14.5 parts of sodium chloride so that the density is 1.17g / cm 3 , a core material solution with a viscosity of 5mPa.S, set aside. Add 13 parts of sodium chloride to 87 parts of tap water to prepare a density of 1.15g / cm 3 The solidified liquid aqueous solution is added to the solidified pool. The prepared capsule material solution and core material solution are respectively added into the dropping pill machine through a constant-flow pump, and the flow rate of the two constant-current pumps is adjusted to maintain a const...

Embodiment 2

[0054] Dissolve 6.7 parts of polystyrene in 71.9 parts of 1,1-dichloroethane to make the viscosity reach 350mPa.S, then add 20 parts of styrene and 1 part of divinylbenzene in sequence (the amount added is the mass of styrene 5.0% of styrene) and 0.4 parts of azobisisoheptanonitrile (addition amount is 2.0% of styrene mass), mix uniformly to make it a density of 1.19g / cm 3 The mixed organic solution is set aside. Prepare 81.3 parts of pure water and 18.7 parts of sodium chloride so that the density is 1.23g / cm 3 , a core material solution with a viscosity of 6mPa.S, set aside. Add 15.5 parts of sodium chloride and 0.5 part of sodium dodecylsulfonate to 84 parts of tap water to prepare a density of 1.19g / cm 3 The solidified liquid aqueous solution is added to the solidified pool. The prepared capsule material solution and core material solution are respectively added into the dropping pill machine through a constant-flow pump, and the flow rate of the two constant-current pu...

Embodiment 3

[0056] Dissolve 8.5 parts of poly-a-methylstyrene in 75.6 parts of 1,2-dichloroethane to make the viscosity reach 346mPa.S, then add 15 parts of styrene and 0.6 parts of hexadiene in sequence (the addition amount is 4.0% of the styrene quality) and 0.27 parts of lauryl peroxide (the addition is 1.8% of the styrene quality), and mixing uniformly to make it a density of 1.28g / cm 3 The mixed organic solution is set aside. Add 2.0 parts of carboxymethyl cellulose, 0.1 part of antioxidant and 23.9 parts of sodium citrate to 74 parts of purified water to prepare a density of 1.33g / cm 3 core material solution, set aside. Add 22 parts of calcium chloride and 1 part of sodium hexadecylbenzenesulfonate to 77 parts of tap water to prepare a density of 1.30g / cm 3 The solidified liquid aqueous solution is added to the solidified pool. The prepared capsule material solution and core material solution are respectively added into the dropping pill machine through a constant flow pump, and ...

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Abstract

The invention discloses a water-coated microcapsule using a water-insoluble polymer as a capsule material, and a preparation method thereof. The water-coated microcapsule is formed through the following steps: wrapping the outer surface of a core material with a mixed organic solution composed of a water-insoluble polymer compound, a water-insoluble polymerization monomer, an initiator and a cross-linking agent, carrying out a polymerization reaction and removing a solvent, wherein the core material is at least one of pure water and an aqueous solution containing a water-soluble substance. Thediameter of the water-coated microcapsule is 1.5-5.0 mm, and the crush strength of the water-coated microcapsule is 1-5 kpa. The method truly realizes the functions of the coating of the pure water and the aqueous solution containing the water-soluble substance, fills the gap in the field, and has the advantages of easily available raw materials, simple preparation process, low energy consumption, no complicated post-treatment process and low preparation cost, and the crush strength of the capsule is adjustable in a range of 1-5 kpa, and can meet the requirements of different application fields.

Description

technical field [0001] The invention belongs to the technical field of preparations and processing thereof, and in particular relates to a water-encapsulated microcapsule with a water-insoluble polymer as a capsule material and a preparation method thereof. Background technique [0002] In the cigarette capsule and pharmaceutical preparation processing industry, especially in the cigarette capsule preparation processing industry, the medicine liquid, flavoring agent, flavoring agent, etc. are wrapped in a polymer film to make capsules with a diameter of 2 to 5 mm, and then placed in cigarettes. Among the filter tips, it is a very effective technical means and popular trend to pinch the capsule with your fingers to release the contents inside when smoking to achieve the purpose of improving the smoking taste of cigarettes or reducing the harm of cigarettes. In the existing market, there are products such as popping beads and cigarette capsules to improve the smoking performan...

Claims

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Application Information

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IPC IPC(8): B01J13/14B01J13/04
CPCB01J13/04B01J13/14
Inventor 殷勤俭王乙涵尹强杨洁
Owner SICHUAN UNIV
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