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Anti-fouling paint containing micro-encapsulation capsaicin and preparation method thereof

A technology of microencapsulation and antifouling coatings, which is applied in the direction of antifouling/underwater coatings, biocide-containing paints, coatings, etc., which can solve the problems of unfavorable coating manufacturers' operation, decreased physical and mechanical properties of coatings, and antifouling effects Long-term effects and other issues, to achieve the effect of easy implementation, low production cost, and simple preparation process

Inactive Publication Date: 2007-12-05
SHANGHAI UNIV OF ENG SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Although capsaicin has the above-mentioned advantages, if it is directly added to the coating, the following problems will occur: ①The physical and mechanical properties of the coating will be reduced due to the compatibility problem between the two; ②The strong spicy taste is not conducive to The operation of the paint producer; ③The durability of the antifouling effect is affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] In a 250ml three-necked flask with a stirrer, reflux condenser, and thermometer, add 80g of formaldehyde solution, 8g of methanol and 19g of diethanolamine, heat the mixture to 90°C and keep it for 2h, then add 21g of melamine into it, and then The above mixture was heated to 90°C and kept for 6 hours to obtain a melamine formaldehyde polycondensate, and then 40ml of water was added to obtain a melamine resin prepolymer.

[0031] Take 30g of capsaicin and disperse it in 20ml of water, then add 10ml of the above pre-shrunk solution, stir evenly to make it a stable dispersion, heat to 100°C, and keep for 1h. During this process, the pre-condensed product gradually becomes insoluble (accompanied by the escape of formaldehyde), and at the same time, a continuous and dense resin film is slowly and uniformly formed on the surface of capsaicin, and the whole system becomes a viscous substance, which is put into a drying box Dry at 100°C. Then grind it into powder to get the d...

Embodiment 2

[0034] In a 250ml three-neck flask with a stirrer, reflux condenser and thermometer, add 90g of formaldehyde solution, 10g of methanol and 23g of diethanolamine, heat the mixture to 90°C and keep it for 3h, then add 25g of melamine into it, and then The above mixture was heated to 90° C. and kept for 6 hours to obtain a melamine formaldehyde polycondensate, and then 50 ml of water was added to obtain a melamine resin prepolymer.

[0035] Take 40g of capsaicin and disperse it in 57ml of water, then add 20ml of the above-mentioned pre-condensed solution, stir evenly to make it a stable dispersion, heat to 100°C, and keep for 3h. During this process, the pre-condensed product gradually becomes insoluble (accompanied by the escape of formaldehyde), and at the same time, a continuous and dense resin film is slowly and uniformly formed on the surface of capsaicin, and the whole system becomes a viscous substance, which is put into a drying box Dry at 105°C. Then grind it into powde...

Embodiment 3

[0038] In a 250ml three-necked flask with a stirrer, reflux condenser and thermometer, add 100g of formaldehyde solution, 12g of methanol and 28g of diethanolamine, heat the mixture to 90°C and keep it for 4h, then add 30g of melamine into it, and then The above mixture was heated to 90°C and kept for 6 hours to obtain a melamine formaldehyde polycondensate, and then 60ml of water was added to obtain a melamine resin prepolymer.

[0039] Take 50g of capsaicin and disperse it in 12.5ml of water, then add 30ml of the above-mentioned pre-shrunk solution, stir evenly to make it a stable dispersion, heat to 100°C, and keep for 2h. During this process, the pre-condensed product gradually becomes insoluble (accompanied by the escape of formaldehyde), and at the same time, a continuous and dense resin film is slowly and uniformly formed on the surface of capsaicin, and the whole system becomes a viscous substance, which is put into a drying box Dry at 110°C. Then grind it into powder...

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Abstract

The present invention provides one kind of antifouling paint containing capsaicin microcapsule and its preparation process. The antifouling paint consists of adhesive of epichlorohydrin rein or vinyl resin 40-55 weight portions, organic solvent of toluene, xylene, etc. 11-33 weight portions, dispersant of sodium triphosphate, sodium or polyglycol 1.5-5.5 weight portions, anti-settling agent of organic bentonite, gas phase silica or polyethylene wax 0.5-3.5 weight portions, and antifoulant of capsaicin microcapsule 20-30 weight portions. The capsaicin microcapsule with covering of melamine resin is prepared through a in-situ polymerization process. The antifouling paint has simple preparation process and low production cost, and may be applied widely for sea ship, sea water cooling pipeline, etc.

Description

technical field [0001] The invention relates to an antifouling paint containing microencapsulated capsaicin and a preparation method thereof. Background technique [0002] The usual marine antifouling technology is based on the release of poisonous materials as the main way. Through the releasable antifouling agents such as copper, tin, mercury and lead in the coating, a toxic and killing effect on marine plant spores and marine animal larvae is formed around the material. The effect of the poison concentration layer, so as to achieve the antifouling effect. [0003] During the use of such antifouling coatings, some toxic agents (such as organotin) will cause sea water pollution, cause biological variation, endanger the marine food chain, and have potential hazards to marine ecological balance and human health. From the perspective of environmental protection, people hope to use pollution-free antifouling technology to realize the prevention and control of marine fouling or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12C09D5/16C09D201/02
Inventor 王锦成陈思浩徐子成
Owner SHANGHAI UNIV OF ENG SCI
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