Antibacterial polyurethane and preparation method thereof

A polyurethane and polyisocyanate technology, which is applied to polyurea/polyurethane coatings, coatings, paints containing biocides, etc., can solve the problems of expensive raw materials, complex production technology, single bactericidal and antibacterial effects, etc., and achieves low cost and simple method. Easy, source-rich effects

Inactive Publication Date: 2013-08-07
HUAIHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the above-mentioned technology has the defects of non-renewable film-forming material of marine antifouling polyurethane coating, single bactericidal and antibacterial effect, expensive raw materials and complicated production technology.

Method used

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  • Antibacterial polyurethane and preparation method thereof
  • Antibacterial polyurethane and preparation method thereof
  • Antibacterial polyurethane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Example 1 Soybean oil-based polyurethane SO-Me connected to salicylaldehyde and quaternary ammonium salt antibacterial functional groups on the macromolecular side chain 2 Preparation of N-PUS

[0033]Step 1. Polyhydroxy polytertiary amine modified soybean oil SO-Mt 2 Preparation of N

[0034] Take by weighing 100 grams of epoxidized soybean oil with an epoxy value of 6.6 and 180 grams of ethyl acetate and put it into the reactor, control the temperature of the reaction material to 45-55 ° C, stir and blow 15 grams of dimethylamine gas in 2 hours, after that The reaction mass temperature rises to 80~85 ℃, continues to react for 4 hours, obtains 293 grams of light yellow polyhydroxy polytertiary amine group modified soybean oil solution, sampling analysis makes the polyhydroxy polytertiary amine group modified soybean oil hydroxyl group The value was 248.7 mg / g.

[0035] Step 2. Tertiary amine modified soybean oil-based polyurethane SO-Me 2 Preparation of N-PU

[00...

Embodiment 2

[0039] Example 2 Dioleic acid ethylene glycol ester-based polyurethane OA-Me connected to salicylaldehyde and quaternary ammonium salt antibacterial functional groups on the macromolecular side chain 2 Preparation of N-PUS

[0040] According to the method and operation steps of Example 1, the epoxidized soybean oil in Step 1 of Example 1 was replaced with epoxidized ethylene glycol dioleate, and salicylaldehyde and quaternary ammonium were connected on the macromolecular side chain Dioleate-based Polyurethane OA-Me with Salt Antibacterial Functional Group 2 Ethyl acetate solution of N-PUS.

Embodiment 3

[0041] Example 3 Soybean oil-based polyurethane SO-Ee connected to salicylaldehyde and quaternary ammonium salt antibacterial functional groups on the macromolecular side chain 2 Preparation of N-PUS

[0042] According to the method and operation steps of Example 1, the dimethylamine in Step 1 of Example 1 was replaced with diethylamine to obtain soybean oil-based polyurethane with salicylaldehyde and quaternary ammonium salt antibacterial functional groups connected to the macromolecular side chain SO-Ee 2 Ethyl acetate solution of N-PUS.

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PUM

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Abstract

The invention provides antibacterial polyurethane, and in particular to a vegetable oil and fat based polyurethane. A macromolecular side chain of the vegetable oil and fat based polyurethane is connected with a quaternary ammonium salt antibacterial functional group of salicylaldehyde; the vegetable oil and fat based polyurethane is prepared by carrying out quaternization reaction on tertiary amine modified vegetable oil and fat based polyurethane and 5-chloromethyl salicylaldehyde; the macromolecular side chain of the antibacterial polyurethane comprises more than two substances which are different in antibacterial killing mechanisms; the substances mutually generate a killing antibacterial synergistic effect; the drug resistance of a bacterial microorganism can be effectively reduced; and the polyurethane, when used as a marine antifouling coating, is simple and easy in implementation of the preparation method, abundant in raw material resources, and low in cost.

Description

technical field [0001] The invention relates to an antibacterial polyurethane material, in particular to vegetable oil-based polyurethane in which salicylaldehyde and quaternary ammonium salt antibacterial functional groups are connected to macromolecular side chains, and belongs to the field of functional materials. technical background [0002] Facilities placed in seawater and ships traveling in the ocean have serious marine biofouling problems. At present, the most effective way is to apply anti-fouling coatings. The so-called coating antifouling principle is to introduce biocidal antibacterial and antifouling agents into the coating film-forming materials to prevent the adhesion of marine organisms; or reduce the surface energy of the coating in an attempt to reduce the adhesion of marine organisms and maintain the self-cleaning effect of the coating surface. Adding biocidal, antibacterial and antifouling agents is a widely used, simple and low-cost method for applying ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/84C09D175/04C09D5/16
Inventor 王妍佟敏董龙周豆兴康刘岩峰朱彩艳
Owner HUAIHAI INST OF TECH
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