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Long-acting antibacterial PAE resin, preparation method thereof and coating composition

A long-acting, resinous technology, used in cyanide reaction preparation, antifouling/underwater coatings, chemical instruments and methods, etc., can solve the disappearance of antibacterial effect, the precipitation and aging of fillers, and the lack of in-depth antibacterial/antibacterial properties. research and other issues, to achieve the effect of good fluidity, difficult bacteriostatic effect, and sufficient operating time

Active Publication Date: 2021-05-11
浙江艾特普科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the prior art improves the strength, uniformity, elasticity, wear resistance and yellowing resistance of PAE polyurea resin, but the antibacterial / antibacterial performance on PAE polyurea resin and its floor coating composition is not In-depth research has not been done, which limits the application of PAE polyurea resin in the medical and health field
Most of the current coatings use fillers with antibacterial effect in the coating composition to achieve the antibacterial effect. After long-term use, the fillers precipitate out and age, and the antibacterial effect gradually disappears.

Method used

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  • Long-acting antibacterial PAE resin, preparation method thereof and coating composition
  • Long-acting antibacterial PAE resin, preparation method thereof and coating composition
  • Long-acting antibacterial PAE resin, preparation method thereof and coating composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Add the xylene solution containing dimethyl maleate and hydroxy quaternary ammonium salt into the reaction vessel, the molar ratio of dimethyl maleate and hydroxy quaternary ammonium salt is 1:(2-2.5), then add 0.01-0.1 The wt% p-toluenesulfonic acid catalyst is subjected to transesterification reaction at 120-140 DEG C for 4-8 hours, xylene is separated, and quaternary ammonium maleate is obtained.

[0031] Then in another reaction vessel, add aliphatic dibasic amine, under the situation of feeding nitrogen, dropwise add maleic acid ester quaternary ammonium salt, the mol ratio of aliphatic dibasic amine and maleic acid quaternary ammonium salt is 1:(2 -2.5), when reaching the end of the reaction, the temperature is raised to 60-65° C. and incubated for 24-36 hours to obtain a long-acting bacteriostatic PAE resin.

[0032] Among them, the hydroxyl quaternary ammonium salt is selected from hydroxymethyltrimethylammonium chloride or 2-hydroxypropyltrimethylammonium chlor...

Embodiment 2

[0034] Dimethyl maleate and hydroxymethyltrimethylammonium bromide are mixed according to a molar ratio of 1:2.1, then added to a reaction vessel containing xylene solvent, and then 0.05wt% of p-toluenesulfonic acid is added as a catalyst at 130 The transesterification reaction was carried out at ℃ for 6 hours, the xylene was separated, and the quaternary ammonium maleate was obtained.

[0035] Then add 4,4'-diaminodicyclohexylmethane to another reaction vessel, dropwise add maleate quaternary ammonium salt under nitrogen gas, 4,4'-diaminodicyclohexylmethane and maleic acid The molar ratio of the acid quaternary ammonium salt is 1:2.1, and the temperature is raised to 60-65°C at the end of the reaction and kept for 30 hours to obtain a long-acting bacteriostatic PAE resin.

[0036] The PAE resin is an orange transparent liquid with a viscosity of 2400CPS / 25°C.

Embodiment 3

[0038] Dimethyl maleate is mixed with hydroxymethyltrimethylammonium chloride according to a molar ratio of 1:2.4, then added to a reaction vessel containing xylene solvent, and then 0.08wt% of p-toluenesulfonic acid is added as a catalyst at 130 The transesterification reaction was carried out at ℃ for 6 hours, the xylene was separated, and the quaternary ammonium maleate was obtained.

[0039] Then in another reaction vessel, add isophorone diamine, under the situation of feeding nitrogen, dropwise add maleate quaternary ammonium salt, the mol ratio of isophorone diamine and maleate quaternary ammonium salt is 1: 2.1. At the end of the reaction, heat up to 60-65°C and keep it warm for 30 hours to obtain long-acting antibacterial PAE resin.

[0040] The PAE resin is a yellow transparent liquid with a viscosity of 1500CPS / 25°C.

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Abstract

The invention discloses long-acting antibacterial PAE resin, a preparation method thereof and a coating composition. Dimethyl maleate and hydroxyl quaternary ammonium salt are subjected to transesterification, the obtained maleate quaternary ammonium salt and aliphatic diamine are subjected to Michael addition reaction, and the long-acting antibacterial PAE resin is obtained. Due to the high branching characteristic of the resin, the flowability of the resin is better, and the resin has sufficient operation time during polyurea double-component floor construction by adjusting the proportion; and meanwhile, the dendritic macromolecular structure contains a large number of cavities and has a good effect on stabilizing and dispersing the nano-silver, and the antibacterial effect does not decline remarkably along with long-time use or aging of the terrace.

Description

technical field [0001] The invention relates to the field of polymers and polymer coatings, in particular to a long-acting bacteriostatic PAE resin, a preparation method thereof and a coating composition. Background technique [0002] PAE polyurea material has excellent properties such as elasticity, waterproof, anti-skid, wear resistance, etc. It is an excellent coating and bonding material, and is widely used in floor coatings. [0003] [0004] Polyaspartic Acid Ester (Polyaspartic Acid Ester), referred to as PAE, is a new type of hindered amine structure developed in recent years, and its chemical structure is shown in Formula I. Most of the prior art improves the strength, uniformity, elasticity, wear resistance and yellowing resistance of PAE polyurea resin, but the antibacterial / antibacterial performance on PAE polyurea resin and its floor coating composition is not In-depth research has not been made, which limits the application of PAE polyurea resin in the medi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/08C07C229/24C07C213/06C07C219/08C08G18/32C09D175/02C09D5/14
CPCC07C213/06C07C227/08C08G18/3228C08K2003/0806C08K2201/011C09D5/14C09D175/02C07C2601/14C07C229/24C07C219/08C08K9/12C08K3/08
Inventor 赵军子朱银榜卢鹏飞姜山陈建军李林
Owner 浙江艾特普科技有限公司
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