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A kind of capsule wall degradable small molecule antioxidant microcapsule emulsion and its preparation method and application

An anti-aging agent and microcapsule technology, which is applied in the field of small molecule anti-aging agent microcapsule emulsion and its preparation, can solve the problems of aggregation instability, narrow application range, high cost, etc., and achieve the effect of convenient use

Active Publication Date: 2022-04-19
HANGZHOU TRANSFAR FINE CHEM CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent CN201410818500.6 discloses a gold nano-encapsulated aromatic leather finishing agent which is a nano-capsule aqueous solution, but its preparation process requires the use of nano-gold, which is expensive and has a narrow scope of application.
Because the oily microfiber impregnated resin is a solvent-based uniform system, it is easy to use and add additives, but the water-based superfiber resin is an emulsion-type heterogeneous phase, and it is inconvenient to add additives. Adding in the traditional oily way will easily lead to the precipitation and aggregation of additives instability

Method used

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  • A kind of capsule wall degradable small molecule antioxidant microcapsule emulsion and its preparation method and application
  • A kind of capsule wall degradable small molecule antioxidant microcapsule emulsion and its preparation method and application
  • A kind of capsule wall degradable small molecule antioxidant microcapsule emulsion and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Weigh 80g of poly-1,6-hexanediol adipate with a molecular weight of 2000, add it to a four-necked flask equipped with a stirring paddle and nitrogen protection, heat up to 120°C, vacuum dehydrate for 30min, cool down to 55°C and add 33.6g mass parts of HMDI, stirred evenly under the protection of nitrogen, reacted at 85°C for 1h, then added 0.01g mass portion of stannous octoate as a catalyst, and reacted at 60°C for 3h to obtain a clear and transparent reactant A, adding 5.3 g dimethylol propionic acid, 1.5g neopentyl glycol, 20g methyl ethyl ketone, reacted for 2h at 75°C; cooled to 45°C to obtain a clear and viscous shell resin prepolymer B, which was re-produced according to step 1) Reactant A of 32g mass parts, after it is mixed with 13g HMDI homogeneously as dissolution medium, add 28.8g antioxidant 1098 (N,N'-bis-(3-(3,5-di-tert-butyl-4 hydroxyl Phenyl) propionyl) hexamethylene diamine), 57.6g UV absorber CHIMASSORB 81, 57.6g light stabilizer TINUVIN 770, under s...

Embodiment 2

[0027]Weigh 120g of poly(1,4-butylene adipate) with a molecular weight of 3000, add it into a four-necked flask equipped with a stirring paddle and nitrogen protection, heat up to 100°C, vacuum dehydrate for 90min, cool down to 75°C and add 28.7g parts by mass of IPDI, stirred evenly under the protection of nitrogen, reacted at 90°C for 0.5h, then added 0.05g parts by mass of dibutyltin dilaurate as a catalyst, reacted at 85°C for 2.5h, and obtained 148.7g of clear and transparent Reactant A, add 4.5g dimethylol propionic acid, 2g 1,4-butanediol, 30g acetone, react at 75°C for 2h; cool down to 45°C to obtain clear and viscous shell resin prepolymer B, press Step 1) make reactant A of 47g mass parts again, after it is mixed with 5.4g IPDI homogeneously as dissolution medium, add 40g antioxidant (wherein antioxidant 264 2,6-di-tert-butyl-4-methyl Base phenol 25g, antioxidant 168 tris (2,4-di-tert-butylphenyl) phosphite 15g), 20g UV absorber TINUVIN 328, 20g light stabilizer TINU...

Embodiment 3

[0029] Weigh 40g of polyethylene adipate with a molecular weight of 1000, add it to a four-necked flask equipped with a stirring paddle and nitrogen protection, heat up to 120°C, vacuum dehydrate for 60min, and add 16g parts by mass of TDI, stirred evenly under the protection of nitrogen, reacted at 85°C for 0.5h, then added 0.01g of dibutyltin dilaurate as a catalyst, reacted at 85°C for 2.5h, obtained a clear and transparent reactant A, added 4g of hexyl Diol, 10g acetone, react at 75°C for 2h; cool down to 45°C, add 2.5g sodium ethylenediaminoethanesulfonate to obtain a clear and viscous shell resin prepolymer B, and then prepare it according to step 1) The reactant A of 20g mass parts, after it is mixed with 4.2g IPDI as dissolution medium, add 20g antioxidant 1010 (tetrakis (β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid ) pentaerythritol ester), 15g of UV absorber TINUVIN 1577, 15g of light stabilizer 765, heated up to 65°C under stirring, and after fully dissolvin...

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PUM

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Abstract

The invention discloses a degradable micromolecule antioxidant microcapsule emulsion with a capsule wall, a preparation method and application thereof. In order to solve the problem of thermal and oxygen degradation of polyether, the commonly used method in the industry is to add anti-aging agents, but anti-aging agents are mostly small molecular substances, which are prone to thermodynamic migration when directly added to the interior of latex particles, affecting the appearance and stability of the emulsion. Migration The anti-aging effect after precipitation is also affected. The present invention prepares antioxidant microcapsules through the microcapsule coating technology, and coats the small molecule antioxidant molecules inside the particles. At the same time, after chain extension through hydrazine hydrate, a shell structure with a high urea bond content is obtained, and the dynamics are set. The barrier prevents the migration of small molecule anti-aging agents and forms a stable anti-aging structure; the degradable anti-aging agent microcapsule emulsion is added to the water-based microfiber impregnated resin, which is convenient to use and stable during storage.

Description

technical field [0001] The invention belongs to the field of functional microcapsules, and relates to a micromolecule antioxidant microcapsule emulsion with degradable capsule walls, a preparation method and application thereof. Background technique [0002] As a new carrier technology, microcapsule technology can coat some solid and liquid core materials that are difficult to transport or sensitive to the environment into a microcapsule structure, so as to avoid the failure or failure of the core material before it is delivered to the use scene The problem of too fast, so as to achieve the effect of targeted delivery or sustained release. At present, the most widely used scenarios of microcapsule technology are pharmaceutical carriers, phase change material carriers, self-healing, aromatic essential oil finishing, etc. Among them, microcapsules for targeted drug therapy mostly use shell materials with good biocompatibility, such as Chinese patent CN201310424282.3 discloses...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J13/02
CPCB01J13/02
Inventor 余冬梅熊露王小君王胜鹏牟静余学康胡娟
Owner HANGZHOU TRANSFAR FINE CHEM CO LTD
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