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A kind of polyurethane containing triarylamine and its preparation method and application

A technology of triarylamine and polyurethane, which is applied in the field of polyurethane and its preparation, can solve the problems of low solubility, low photochromic response sensitivity, and poor processability, and achieve good electrochromic performance

Inactive Publication Date: 2017-10-10
HEILONGJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention solves the problems of low solubility, poor processability and low photochromic response sensitivity of existing polyurethane in organic solvents, and provides a polyurethane containing triarylamine and its preparation method and application

Method used

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  • A kind of polyurethane containing triarylamine and its preparation method and application
  • A kind of polyurethane containing triarylamine and its preparation method and application
  • A kind of polyurethane containing triarylamine and its preparation method and application

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specific Embodiment approach 1

[0066] Specific embodiment one: this embodiment is a kind of structural formula of the polyurethane containing triarylamine is: Wherein, described Ar is: The R is: The value range of n is 1≤n≤100, and n is an integer.

[0067] The advantage of this implementation mode:

[0068] 1. The polyurethane containing triarylamine prepared by this embodiment overcomes the disadvantage that polyurethane is difficult to dissolve in general organic solvents in the past. The polyurethane containing triarylamine utilizes the introduction of large groups of triphenylamine to improve the solubility of the entire polymer, making the polyurethane containing triarylamine Polyurethane is soluble in most organic solvents; at the same time, the CO-NH structure formed by polyurethane is connected to the benzene ring, and the color changes after oxidation, and can undergo reversible changes accompanied by reversible color changes;

[0069] 2. Under a nitrogen atmosphere, the polyurethane conta...

specific Embodiment approach 2

[0072] Specific embodiment two: present embodiment is a kind of preparation method of the polyurethane containing triarylamine is finished according to the following steps:

[0073] 1. Synthesis of monoamine monomer:

[0074] ①. Under a nitrogen atmosphere, dissolve diphenylamine in anhydrous dimethyl sulfoxide, then add p-fluoronitrobenzene and sodium hydride, then heat and reflux at a temperature of 150°C to 160°C for 36h to 48h, and then use Distilled water at a temperature of 0°C to 5°C precipitates the product A, and then uses acetonitrile to recrystallize the product A, and then dries at a temperature of 40°C to 50°C for 10h to 12h to obtain a triphenylamine nitro compound;

[0075] The volume ratio of the mass of diphenylamine described in step 1 to anhydrous dimethyl sulfoxide is (0.1g~0.5g): 10mL;

[0076] The mol ratio of the diphenylamine described in step 1. and p-fluoronitrobenzene is 1:1;

[0077] Step 1. The mass ratio of diphenylamine and sodium hydride descr...

specific Embodiment approach 3

[0106]Specific embodiment three: the difference between this embodiment and specific embodiment two is: the structure of the isocyanate monomer obtained in step three is Others are the same as in the second embodiment.

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Abstract

The invention relates to polyurethane as well as a preparation method and application thereof, particularly to triarylamine-containing polyurethane as well as a preparation method and application thereof, and aims to solve the problems that the existing polyurethane has low solubility in organic solvents, and is poor in machinability and low in photoelectricity discoloration response sensitivity. The structural formula of the triarylamine-containing polyurethane is as shown in the Description, wherein the structural formulas of Ar and R are as shown in the Description as well; n is equal to or smaller than 100 and equal to or greater than 1 and is an integer. The preparation method of the triarylamine-containing polyurethane comprises the following steps: synthesizing a monamine monomer, synthesizing a triarylamine monomer, synthesizing an isocyanate monomer, and synthesizing the triarylamine-containing polyurethane. Through the preparation method disclosed by the invention, the triarylamine-containing polyurethane can be obtained.

Description

technical field [0001] The invention relates to a polyurethane and its preparation method and application. Background technique [0002] High-performance polymers can meet the requirements of many industrial applications such as aerospace, military, electronics, and machinery manufacturing. How to prepare polymers with fast response time, high color changing efficiency, and high color contrast has become a topic of international research. [0003] The unique microphase separation structure of polyurethane makes it have good elasticity and mechanical strength, and because of its characteristics of heat insulation, sound insulation, wear resistance, oil resistance and light resistance, it is widely used in artificial synthetic leather, soft and hard foam plastics, fibers ( Especially elastic fibers), adhesives, coatings, waterproof materials, paving materials, elastomers and other fields. Polyurethane containing triarylamine has good mechanical properties, thermal stability, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G18/32C08G18/78C08G18/76
CPCC08G18/3218C08G18/7678C08G18/78
Inventor 刘钟钵牛海军纪艳张春雨秦川丽白续铎
Owner HEILONGJIANG UNIV
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