Tung-oil-based waterborne polyurethane and preparation method thereof

A technology of water-based polyurethane and tung oil, applied in polyurea/polyurethane coatings, coatings, etc., to achieve the effects of simple coating operation, poor water resistance and poor film-forming performance

Inactive Publication Date: 2013-06-26
东莞市才智坊新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the existing problems of introducing tung oil into polyurethane and making it water-based, and provides a kind of tung oil-based water-based polyurethane which solves the above problems and its preparation method

Method used

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  • Tung-oil-based waterborne polyurethane and preparation method thereof
  • Tung-oil-based waterborne polyurethane and preparation method thereof
  • Tung-oil-based waterborne polyurethane and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0025] Raw materials: tung oil (industrial product, dried with anhydrous magnesium sulfate before use), ethylene glycol (chemically pure, vacuum dried for 2 hours before use), p-toluenesulfonic acid (chemically pure), pol-1256 (industrial product, Hydroxyl content: 1.0mmo / g), toluene-2,4-diisocyanate (chemically pure), dibutyltin dilaurate (analytical grade), acetone (before use, dried with anhydrous magnesium sulfate and distilled under reduced pressure) , Triethylamine (chemically pure), dimethylolpropionic acid (industrial product, vacuum dried before use), ethylenediamine (chemically pure), deionized water.

[0026] 1. Preparation of Modified Tung Oil

[0027] Formulation (by weight)

[0028] Tung Oil 432 servings

[0029] Ethylene glycol 120 parts

[0030] 6 parts p-toluenesulfonic acid

[0031] The specific preparation method is:

[0032] Weigh 120 parts of ethylene glycol and add it to a four-necked flask with a thermometer, a reflux condenser (shared with the nitr...

Embodiment 2

[0038] Raw materials: tung oil (industrial product, dried with anhydrous manganese sulfate before use), 1,4-butanediol (chemically pure, vacuum dried for 2 hours before use), potassium hydroxide (analytical grade), pol-1256 ( Industrial product, hydroxyl content: 1.0mmo / g), isophorone diisocyanate (chemically pure), dibutyltin dilaurate (analytical grade), acetone (before use, dried with anhydrous magnesium sulfate, distilled under reduced pressure ), triethylamine (chemically pure), dimethylolpropionic acid (industrial product, vacuum dried before use), isophoronediamine (chemically pure), deionized water.

[0039] 1. Preparation of Modified Tung Oil

[0040] Formulation (by weight)

[0041] Tung Oil 432 servings

[0042] 1,4-Butanediol 180 parts

[0043] 5 parts potassium hydroxide

[0044] The specific preparation method is:

[0045]Weigh 180 parts of 1,4-butanediol and add it to a four-necked flask with a thermometer, a reflux condenser (shared with the nitrogen inlet...

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Abstract

The invention relates to the technical field of biological materials and treatment and particularly relates to tung-oil-based waterborne polyurethane and a preparation method thereof. According to the tung oil-based waterborne polyurethane and the preparation method provided by the invention, water is taken as a dispersion medium, so that the tung-oil-based waterborne polyurethane has the advantages of being economical, non-toxic, free from pungent smell, non-combustible, environmentally-friendly, and the like; the water resistance of a waterborne polyurethane film is improved, the defect of poor water resistance of current waterborne polyurethane is overcome, a tung-oil-based waterborne polyurethane skeleton contains a tung oil ingredient to form a network structure so as to improve the water resistance of the waterborne polyurethane; the film formation performance of tung oil is good, so that the tung oil is introduced into the polyurethane skeleton to greatly improve the film formation performance of the waterborne polyurethane; and the tung oil ingredient contains a conjugated double bond, the curing process of the tung-oil-based waterborne polyurethane can be a thermal curing process, and more importantly, the curing process can be an oxidization curing process in the presence of oxygen, so that the tung-oil-based waterborne polyurethane can be stable for a long time under the conditions of air tightness and normal temperature.

Description

technical field [0001] The invention relates to the technical field of biological materials and treatment, in particular to a tung oil-based water-based polyurethane and a preparation method thereof. Background technique [0002] Tung oil is a special resource in my country and a renewable resource. Tung oil is the main product of the seeds of the tung tree (Aleurites fordii), an important industrial raw material and a traditional export commodity. National attention; tung oil has a special chemical structure and active chemical properties. Combining the development of tung oil resources with the modification of industrialized large-variety polymer materials, and developing towards high performance, is conducive to the industrialization and application of products. Coatings with tung oil as the main body can further expand the use. The high-grade products of tung oil can be used to coat aircraft and submarine shells, as well as coastal and offshore oil drilling equipment. W...

Claims

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Application Information

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IPC IPC(8): C08G18/67C08G18/42C08G18/34C08G18/32C08G18/12C09D175/14
Inventor 陈洪王正祥彭学军
Owner 东莞市才智坊新材料有限公司
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