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Preparation method of high-resistance polymer coating fluid

A technology of high molecular polymer and coating liquid, applied in the directions of starch derivative coatings, cellulose derivative coatings, coatings, etc., can solve the problems of difficult recycling and difficult processing of polymer materials, so as to reduce processing costs and prepare Simple method, excellent oxygen barrier effect

Active Publication Date: 2012-03-21
GREATVIEW BEIJING TRADING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For this reason, the technical problem to be solved by the present invention is that the existing polymer materials used as high barrier polymer coating solutions are difficult to process and difficult to recycle. Therefore, the present invention provides a multi-component environment-friendly high barrier polymer coating solution. The preparation method of the cloth liquid, the coating liquid prepared by this method has excellent oxygen barrier performance under the condition of forming a thin coating, and the coating liquid has the advantages of simple preparation process and stable performance

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] High barrier polymer coating solution includes the following components:

[0043] Polyvinyl alcohol PVOH 15wt%, its molecular weight is 20000, alcoholysis degree is 88wt%;

[0044] Nano silica 0.112wt%, specific surface area is 200m 2 / g;

[0045] Silane coupling agent KH-570 0.008wt%;

[0046] Acetic acid 0.314wt%;

[0047] Polydiallyl dimethyl ammonium chloride 0.014wt%, its molecular weight is 1,000,000;

[0048] Polymaleic acid 5wt% molecular weight 1000

[0049] Alkali metal cross-linking agent 0.4wt%, described cross-linking agent is the mixture of sodium borate and boric acid, and its weight ratio is 1: 1;

[0050] Ethanol 3wt%;

[0051] Water 76.152wt%.

[0052] The preparation method of the above-mentioned high barrier polymer coating liquid is:

[0053] (1) Add 22 parts of PVOH with a molecular weight of 20,000 and an alcoholysis degree of 88%wt to 78 parts of water at 93°C, stir at 500rpm for 40min to obtain a solution, cool to 30°C for later use.

[0...

Embodiment 2

[0058] High barrier polymer coating solution includes the following components:

[0059] Polyvinyl alcohol PVOH 8wt%, its molecular weight is 90000, alcoholysis degree is 99wt%;

[0060] Nano silica 12wt%, specific surface area is 380m 2 / g;

[0061] Silane coupling agent KH-570 1wt%;

[0062] Acetic acid 3wt%;

[0063] Polydiallyl dimethyl ammonium chloride 2.25wt%, its molecular weight is 2,000,000;

[0064] Polymaleic acid 1wt% molecular weight 800

[0065] Alkali metal cross-linking agent 0.4wt%, described cross-linking agent is the mixture of sodium borate and boric acid, and its weight ratio is 1: 1;

[0066] Isopropanol 3wt%;

[0067] Water 69.35wt%.

[0068] The preparation method of the above-mentioned high barrier polymer coating liquid is:

[0069] (1) Add 20 parts of PVOH with a molecular weight of 90,000 and an alcoholysis degree of 99% wt to 80 parts of water at 97°C, stir at 800 rpm for 40 minutes to obtain a solution, cool to 30°C for later use;

[007...

Embodiment 3

[0074] High barrier polymer coating solution includes the following components:

[0075] Polyvinyl alcohol PVOH 8wt%, its molecular weight is 44000, alcoholysis degree is 99wt%;

[0076] Nano silica 6wt%, specific surface area is 200m 2 / g;

[0077] Acetic acid 2.05wt%;

[0078] Polydiallyl dimethyl ammonium chloride 0.6wt%, its molecular weight is 3,000,000;

[0079] Polymaleic acid 2wt% molecular weight 1000

[0080] Alkali metal cross-linking agent 0.2wt%, described cross-linking agent is the mixture of sodium borate and boric acid, and its weight ratio is 1: 3;

[0081] Isopropanol 9.5wt%;

[0082] Water 71.65wt%.

[0083] The preparation method of the above-mentioned high barrier polymer coating liquid is:

[0084] (1) Add 20 parts of PVOH with a molecular weight of 44000 and an alcoholysis degree of 99%wt to 80 parts of water at 95°C, stir at 800 rpm for 40 minutes to obtain a solution A, cool to 30°C for later use;

[0085] (2) The specific surface area of ​​20 ...

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Abstract

The invention discloses a preparation method of a high-resistance polymer coating fluid, which comprises the following steps of: firstly, adding the water-soluble high polymer with high hydroxyl density in part of water with the temperature of 92-99DEG C, stirring to obtain a solution of the water-soluble high polymer with high hydroxyl density and reducing the temperature to be 30-40DEG C for later use; secondly, adding nano size metal oxide, a silane coupling agent, a viscosity modifier and a polymer dispersant in part of water and stirring to obtain a homogeneous transparent dispersion liquid; thirdly, mixing the solution of the water-soluble high polymer with high hydroxyl density prepared in the first step with the homogeneous transparent dispersion liquid prepared in the second step, then sequentially adding the balance of water, a carboxyl polymer, an alkali metal salt cross-linking agent and a drying regulator, stirring at the speed of 50-500rpm for 30-60 minutes and filtering by using a stainless steel filter with 200-800 meshes to obtain the high-resistance coating fluid. The multi-component environment-friendly coating fluid prepared in the invention has excellent oxygen resistant performance under the condition that a thinner coating is formed and simultaneously has the advantages of simple preparation process and stable performance.

Description

technical field [0001] The invention relates to a preparation method of a high-barrier polymer with high oxygen barrier properties after film formation. Background technique [0002] In the process of food storage and transportation, there are many factors that lead to food spoilage, among which the food spoilage is mainly caused by the contact between food and oxygen in the air. For liquid food, in order to improve the storage time and shelf life of the food, it is usually packaged with materials with high barrier properties to oxygen, and the package must have sufficient water resistance to prevent leakage of the contents. [0003] For water resistance, if you choose non-polar polymer materials such as polyolefins, including polyethylene, polypropylene, etc., a continuous mold with sufficient thickness can provide good water resistance; for oxygen with a small molecular diameter, you must use Strong polarity, high crystallinity, and high density materials can obtain low o...

Claims

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Application Information

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IPC IPC(8): C09D129/04C09D133/02C09D103/02C09D103/04C09D101/02C09D101/08C09D7/12
Inventor 不公告发明人
Owner GREATVIEW BEIJING TRADING CO LTD
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