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Cross linking type methyl acrylate and vinyl acetate emulsion and preparation method thereof

A vinegar-acrylic emulsion, cross-linking technology, applied in the direction of adhesive type, monocarboxylate copolymer adhesive, etc., can solve the problems of coarse particles, coarse particles, explosion, etc. The effect of improving water resistance and improving flexibility

Active Publication Date: 2012-05-02
顶立新材料科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The acrylic acid content in the conventional vinegar-acrylic emulsion formula does not exceed 5% of the total monomer content. Once this raw material exceeds the above ratio, the production cannot be controlled, resulting in coarse particles and high viscosity.
The main reasons for this are: a. The reactivity ratios of several monomers are different, and they cannot be reasonably copolymerized and cross-linked in a conventional emulsification system, resulting in the implosion of a certain monomer, making the particles thicker, and the molecular chain is too long and Causes too much viscosity to control

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] 200 parts by weight of vinyl acetate, 140 parts by weight of butyl acrylate, 110 parts by weight of acrylic acid, 8 / 3 parts by weight of nonionic emulsifier OP-10, 4 / 3 parts by weight of sodium dodecylbenzenesulfonate and deionized water 100 parts by weight are mixed and stirred at 120 rpm to make a pre-emulsion for subsequent use; 1.5 parts by weight of ammonium persulfate is dissolved with 12 parts by weight of deionized water to make an initiator solution for subsequent use;

[0025] Add 20 parts by weight of polyvinyl alcohol 1788 to 638 parts by weight of deionized water, raise the temperature to 90 ° C for 2 hours, after completely dissolving, cool to 60 ° C, add non-ionic emulsifier OP-10 16 / 3 parts by weight and twelve 8 / 3 parts by weight of sodium alkylbenzene sulfonate, add 7 parts by weight of disodium hydrogen phosphate dodecahydrate, stir, heat up to 70°C, add dropwise 1 / 5 amount of the initiator aqueous solution obtained in the third step and 1 / 10 amount T...

Embodiment 2

[0028] 160 parts by weight of vinyl acetate, 75 parts by weight of butyl acrylate, 60 parts by weight of acrylic acid, 5 / 3 parts by weight of nonionic emulsifier OP-10, 2 / 3 parts by weight of sodium dodecylbenzenesulfonate and deionized water 100 parts by weight are mixed and stirred at 110 rpm to make a pre-emulsion for subsequent use; 1 part by weight of ammonium persulfate is dissolved with 12 parts by weight of deionized water to make an initiator solution for subsequent use;

[0029]Add 5 parts by weight of polyvinyl alcohol 1788 to 438 parts by weight of deionized water, raise the temperature to 90 ° C for 1 hour, after completely dissolving, cool to 60 ° C, add nonionic emulsifier OP-10 10 / 3 parts by weight and twelve Add 4 / 3 parts by weight of sodium alkylbenzene sulfonate, add 5 parts by weight of disodium hydrogen phosphate dodecahydrate, stir, heat up to 70°C, add dropwise 1 / 5 amount of the initiator aqueous solution obtained in the third step and 1 / 10 amount The pr...

Embodiment 3

[0031] Mix 180 parts by weight of vinyl acetate, 120 parts by weight of butyl acrylate, 100 parts by weight of acrylic acid, 2.2 parts by weight of nonionic emulsifier OP-10, 1.1 parts by weight of sodium dodecylbenzenesulfonate and 100 parts by weight of deionized water , make pre-emulsion under 120rpm rotating speed stirring for subsequent use; Ammonium persulfate 1.2 parts by weight is dissolved with 12 parts by weight of deionized water to make initiator solution for subsequent use;

[0032] Add 18 parts by weight of polyvinyl alcohol 1788 to 453.1 parts by weight of deionized water, raise the temperature to 90°C and keep it warm for 1 hour, after completely dissolving, cool to 60°C, add 4.4 parts by weight of non-ionic emulsifier OP-10 and 2.2 parts by weight of sodium benzenesulfonate, add 5.8 parts by weight of disodium hydrogen phosphate dodecahydrate, stir, heat up to 70°C, add dropwise 1 / 5 amount of the third step obtained initiator aqueous solution and 1 / 10 amount of...

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Abstract

The invention provides cross linking type methyl acrylate and vinyl acetate emulsion and a preparation method thereof. The cross linking type methyl acrylate and vinyl acetate emulsion is prepared from 160 to 200 weight parts of vinyl acetate, 75 to 140 weight parts of butyl acrylate, 60 to 110 weight parts of acrylic acids, 5 to 20 weight parts of polyvinyl alcohol 1788, 5 to 8 weight parts of nonionic emulsifiers OP-10, 2 to 4 weight parts of neopelex, 5 to 7 weight parts of disodium hydrogen phosphate dodecahydrate, 0.7 to 1.5 weight parts of ammonium persulfate and 550 to 750 weight parts of vaal water. The preparation method comprises the following steps: making monomers into pre-emulsion; dissolving the ammonium persulfate to obtain triggering agent solution; dissolving the polyvinyl alcohol 1788; adding the emulsifiers and pH regulators; and carrying out intermittent reaction. The invention has the advantages of high water resistance performance, high heat resistance performance, high ageing resistance performance, good initial adhesion, high adhesion strength, no toxicity and harmlessness.

Description

technical field [0001] The invention relates to a crosslinked vinegar-acrylic emulsion and a preparation method thereof, belonging to the technical field of adhesives. Background technique [0002] At present, there is a shortage of various natural resources in the world, and the various wood resources used in home decoration in the market are even more severely lacking. All kinds of medium fiber density boards and plywood in the market now use trialdehyde glue, which brings serious pollution and harm to people's living environment. With the advancement of science and technology and the development of the market, many new materials have appeared in the entire building materials market, such as PS composite boards, which are mainly used in billboards, office partition boards, exhibition layouts, home ceiling boards, etc., and belong to the new lightweight materials in the market. , The market demand is large. PS board is a common decorative panel used in the fields of home ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F218/08C08F220/18C08F220/06C08F2/30C08F2/26C09J131/04
Inventor 陆林森陶月华
Owner 顶立新材料科技股份有限公司