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A kind of preparation method and product of solid starch adhesive for coating

A starch adhesive, solid technology, used in coatings, paper coatings, textiles and papermaking, etc., can solve the problems of oil resource consumption, large demand, and high product prices, and achieve lower production costs, high reaction efficiency, and reduced production costs. The effect of thermal energy consumption

Active Publication Date: 2018-03-13
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The demand for petroleum-based styrene-butadiene latex or propylene styrene latex used as a paint binder in the coating process is huge, which is a huge consumption of non-renewable petroleum resources. At the same time, there is a lot of pollution in the production and use process. The high price has seriously hampered the development of the paper industry, and there is an urgent need to develop alternative products
[0003] At present, there are many substitutes for the disclosed petroleum-based latex, and the use of starch-based as a substitute is one of them, but most of the substitutes cannot adapt to the current high-speed and large-width paper machines, and with the progress of the paper industry, high solid content Coatings have been widely used, and traditional modified starch can no longer fully meet the needs of the paper industry

Method used

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  • A kind of preparation method and product of solid starch adhesive for coating
  • A kind of preparation method and product of solid starch adhesive for coating
  • A kind of preparation method and product of solid starch adhesive for coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Put 50 parts of dry starch in the mixing device, spray a mixed solution of 10 parts of citric acid, 8 parts of sodium dihydrogen phosphate, 2 parts of urea, 10 parts of glycerin and 20 parts of water into the mixing device, and mix it with dry corn starch Evenly, heat up to 45°C and keep warm for 2h;

[0021] Then heat up to 100°C, react for 4 hours, add 10 parts of sodium hydroxide powder and keep it warm for 1 hour, then put it into an extrusion device for extrusion and aging treatment, and finally crush, dry, and cool in sequence to obtain a solid starch adhesive.

Embodiment 2

[0023] Put 50 parts of dry starch in the mixing device, spray a mixed solution of 10 parts of sodium tripolyphosphate, 10 parts of sodium dihydrogen phosphate, 5 parts of urea, 15 parts of glycerin and 20 parts of water into the mixing device, and dry it with corn Mix the starch evenly, raise the temperature to 60°C, and keep it warm for 1 hour;

[0024] Then heat up to 120°C, react for 6 hours, add 20 parts of acetic acid solution and keep it warm for 1 hour, then put it into an extrusion device for extrusion and aging treatment, and finally crush, dry, and cool in sequence to obtain a solid starch adhesive.

Embodiment 3

[0025] Embodiment three (comparative experiment)

[0026] 1. Apply solid starch adhesive to the primer coating process:

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PUM

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Abstract

A method for preparing a solid starch adhesive for coating and its products according to the present invention have the advantages of simple process, low cost, convenient transportation and long shelf life; the prepared solid starch adhesive can be dissolved in cold water, and It will not produce "three wastes" emissions, which helps to protect the environment; the solid starch adhesive of the present invention can replace 20%-30% of synthetic polymer latex without changing the application performance of paper, and is applied to large-scale high-speed coating machines. The production cost can be effectively reduced, and the invention also has the advantages of ready-to-use, long shelf life and good stability.

Description

technical field [0001] The technical field of fine chemical industry of the present invention, specifically, the present invention relates to a kind of preparation method and its product of solid starch adhesive for coating. Background technique [0002] Coated paper is a large category of important paper in the paper industry. With the development of the economy, as a high-grade variety of paper, its demand is increasing. The demand for petroleum-based styrene-butadiene latex or propylene styrene latex used as a paint binder in the coating process is huge, which is a huge consumption of non-renewable petroleum resources. At the same time, there is a lot of pollution in the production and use process. The high price has seriously hampered the development of the paper industry, and there is an urgent need to develop alternative products. [0003] At present, there are many substitutes for the disclosed petroleum-based latex, and the use of starch-based as a substitute is one...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D21H19/14D21H19/54D21H19/46
Inventor 沈安成
Owner SHANGHAI DONGSHENG NEW MATERIALS