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A kind of high viscosity high solid content vinyl acetate-ethylene copolymer emulsion and production method thereof

An ethylene copolymer emulsion and vinyl acetate technology, applied in the direction of monocarboxylate copolymer adhesive, adhesive type, etc., can solve the problems of low production efficiency, low solid content, poor dilution stability, etc., and improve the stability problems, high reaction efficiency, and the effect of system stability

Active Publication Date: 2019-02-26
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, conventional VAE products have problems such as low solid content, poor bonding strength, and poor dilution stability. After dilution with water, they are prone to delamination, poor bonding effect, and sediment is easy to adhere to the rubber roller. The application performance is not ideal.
Moreover, when producing this kind of emulsion for VAE copolymerization, there is a problem that the service life of the equipment is relatively short and the production efficiency is low.

Method used

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  • A kind of high viscosity high solid content vinyl acetate-ethylene copolymer emulsion and production method thereof
  • A kind of high viscosity high solid content vinyl acetate-ethylene copolymer emulsion and production method thereof
  • A kind of high viscosity high solid content vinyl acetate-ethylene copolymer emulsion and production method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of preparation method of vinyl acetate-ethylene copolymer emulsion, its raw material and steps are as follows:

[0027] Emulsifier: 0.22 parts of octylphenol polyoxyethylene ether X-305;

[0028] Protective colloid: 0.06 parts of PVA-0588, 0.05 parts of PVA-1788 and 0.05 parts of PVA-2088, 0.058 parts of hydroxyethyl cellulose 250LR;

[0029] Monomer: 5.85 parts of vinyl acetate, 1.13 parts of vinyl monomer;

[0030] Initiator: 0.58 parts of hydrogen peroxide (mass concentration 1.8%), 0.032 parts of zinc formaldehyde sulfoxylate;

[0031] Deionized water: 3.8 parts.

[0032] a. Preparation of emulsification system: the above-mentioned zinc formaldehyde sulfoxylate is made into an aqueous solution with a mass concentration of 0.45%, and the above-mentioned emulsifier, protective colloid and deionized water are mixed to form an aqueous solution with a mass concentration of 7%, and the mixture is uniform;

[0033] b. Addition reaction: Add the emulsification sys...

Embodiment 2

[0035] Components and consumption and processing parameters are carried out according to Table 1, and others are the same as in Example 1.

[0036] The product properties that embodiment 1 and embodiment 2 make are shown in table 2.

[0037] Table 1

[0038]

[0039]

[0040] Table 2

[0041]

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PUM

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Abstract

The invention provides a vinyl acetate-ethylene copolymer emulsion. The vinyl acetate-ethylene copolymer emulsion is prepared from raw materials comprising vinyl acetate, an ethylene monomer, an emulsifier, protective colloids and an initiator, wherein the protective colloids comprise polyvinyl alcohol and hydroxyethyl cellulose and are characterized in that polyvinyl alcohol adopts one or any combination of different kinds of polyvinyl alcohol with the polymerization degree being 500-2,000 and the alcoholysis degree being 85%-90%. The vinyl acetate-ethylene copolymer emulsion has the characteristics of high viscosity, high solid content, better water resistance and the like and is applicable to the fields of foam / cloth complex adhesives and the like.

Description

technical field [0001] The invention relates to a vinyl acetate-ethylene copolymer emulsion and a preparation method thereof, in particular to a VAE emulsion with high viscosity and high solid content. Background technique [0002] At present, the amount of adhesive used for bonding polystyrene, PVC, polyurethane and other foams to nylon cloth and polyester cloth is relatively large, and the application of vinyl acetate-ethylene copolymer emulsion in this field has a large room for development. However, conventional VAE products have problems such as low solid content, poor bonding strength, and poor dilution stability. After dilution with water, they are prone to delamination, poor bonding effect, and sediment is easy to adhere to the rubber roller. The application performance is not ideal. . Moreover, when producing this kind of emulsion for VAE copolymerization, there is the problem that the service life of the equipment is relatively short and the production efficiency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F218/08C08F2/22C08F4/40C09J131/04
Inventor 黄建钦袁万明刘铭廖建强
Owner CHINA PETROCHEMICAL CORP