Method for preparing glue-water having flashing function

A function and glue technology, applied in the direction of adhesives, adhesive types, aldehyde/ketone condensation polymer adhesives, etc., can solve the problems of unsuitable use environment, etc., and achieve the effect of overcoming color that cannot fade and convenient production

Inactive Publication Date: 2008-03-12
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The current industrial production of glue is basically colorless glue, and with the development of economy and society, ordinary colorless glue can no longer meet the characteristics of people's individual needs, so the study of a series of colored glue has considerable significance
[0003] Through the investigation of relevant materials, we know that some enterpris

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: Add 30 parts of formaldehyde (about 37%) and 1.5 parts of concentrated ammonia water to a three-necked bottle, adjust the pH, add 12 parts of urea, keep it at a constant temperature of 60°C for 10 minutes, and keep it at 95°C for 40 minutes to obtain glue .

[0011] 1) Take a certain amount of glue and add phenolphthalein indicator (1g phenolphthalein + 100ml ethanol solution), under the condition of constant temperature of 60°C, stir slowly for about 10min, stop stirring, adjust the pH to about 8.5, cool to 40°C, and then Add a small amount of a few drops of indicator for coloring, and discharge to obtain lavender glue.

[0012] 2) According to the above method, add methyl red indicator solution and adjust the pH to 6.0 to obtain a light yellow glue solution.

Embodiment 2

[0013] Example 2: Add 40 parts of formaldehyde (about 37%) and 2 parts of concentrated ammonia water to a three-neck bottle, adjust the pH, add 14 parts of urea, keep it at a constant temperature of 60°C for 10 minutes, and keep it at 95°C for 40 minutes to obtain glue .

[0014] 1) Take a certain amount of glue and add phenolphthalein indicator (1g phenolphthalein + 100ml ethanol solution), under the condition of constant temperature of 60°C, stir slowly for about 10min, stop stirring, adjust the pH to about 8.5, cool to 40°C, and then Add a small amount of a few drops of indicator for coloring, and discharge to obtain lavender glue.

[0015] 2) According to the above method, add methyl red indicator solution and adjust the pH to 6.0 to obtain a light blue glue solution.

[0016] 3) According to the above method, add bromothymol blue indicator and adjust the pH to 7.6 to obtain a light blue glue solution.

[0017] 4) According to the above method, add methyl violet indicato...

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PUM

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Abstract

The invention provides a preparing method for a glue with a magic color function, which is characterized in that some binding resin with weak acidity is selected as the main material, various proper acid/alkaline indicators are selected as coloring assistant, they are mixed and blended to get a proper pH range, so as to obtain the product. The advantages with the method are: various proper acid/alkaline indicators are selected as coloring assistant to have coloring treatment on the glue, this solves the problem that the color can't be removed if adding directly pigment into the glue. The product is environmental friendly, is easy and simple to produce, and is practical.

Description

technical field [0001] The invention relates to a preparation method of glue with magic color function. Background technique [0002] The current industrial production of glue is basically colorless glue, and with the development of economy and society, ordinary colorless glue can no longer meet the characteristics of people's individual needs, so the study of a series of colored glue has considerable significance. [0003] Through the investigation of relevant materials, we know that some enterprises also produce some colored glue. The main way they solve the colorization of glue is: add various pigments such as lemon yellow, bright blue, etc. to the original glue, and the amount of pigment used is up to 5% It can leave a bright color on the paper, and the color will not disappear with time, so it is not suitable for some special requirements of the use environment. Contents of the invention [0004] The object of the present invention is to provide a preparation method...

Claims

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Application Information

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IPC IPC(8): C09J9/00C09J11/00C09J161/24C09J161/06
Inventor 谢宇何锋其
Owner NANCHANG HANGKONG UNIVERSITY
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