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Vinyl acetate-acrylic emulsion, synthesis method thereof and electrical steel coating

A vinegar-acrylic emulsion and a synthesis method technology, applied in the coating and other directions, can solve the problems affecting the long-term storage and use of the coating, and achieve the effects of good surface quality, long storage period and narrow particle size distribution

Inactive Publication Date: 2014-06-25
MAGANG (GROUP) HOLDING CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the acrylic emulsion widely used in electrical steel coatings is mixed with inorganic salt solution, and the storage period is only 3 days, which affects the long-term storage and use of coatings.

Method used

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  • Vinyl acetate-acrylic emulsion, synthesis method thereof and electrical steel coating

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] A kind of vinegar acrylic emulsion, each component accounts for the weight ratio of emulsion total amount:

[0030] 35.0% vinyl acetate, 5.0% butyl acrylate, 2.0% isooctyl acrylate, 5.0% methyl methacrylate, 0.5% methacrylic acid, 0.3% alkylphenol polyoxyethylene ether OP-10, 1.0% alkyl Phenyl ether sulfosuccinate sodium salt MS-1, 49.6% water, 0.5% sodium polymethacrylate, 0.4% disodium hydrogen phosphate and 0.8% ammonium persulfate.

[0031] A kind of synthetic method of vinegar-acrylic emulsion:

[0032] A, take by weighing each component according to the weight ratio that each component of the above-mentioned vinegar-acrylic emulsion accounts for the total amount of the emulsion;

[0033] B. The weighed vinyl acetate, butyl acrylate, isooctyl acrylate, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene ether OP-10, alkylphenol ether sulfosuccinate sodium Salt MS-1, sodium polymethacrylate, disodium hydrogen phosphate and part of the water weighed,...

Embodiment 2

[0042] A kind of vinegar acrylic emulsion, each component accounts for the weight ratio of emulsion total amount:

[0043] 20.0% vinyl acetate, 10.0% butyl acrylate, 5.0% isooctyl acrylate, 10.0% methyl methacrylate, 1.0% methacrylic acid, 0.6% alkylphenol polyoxyethylene ether OP-10, 1.2% alkyl Phenyl ether sulfosuccinate sodium salt MS-1, 51.2% water, 0.2% sodium polymethacrylate, 0.2% disodium hydrogen phosphate and 0.6% ammonium persulfate.

[0044] A kind of synthetic method of vinegar-acrylic emulsion:

[0045] A, take by weighing each component according to the weight ratio that each component of the above-mentioned vinegar-acrylic emulsion accounts for the total amount of the emulsion;

[0046] B. Vinyl acetate, butyl acrylate, isooctyl acrylate, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene ether OP-10 alkylphenol ether sulfosuccinate sodium salt MS-1 , sodium polymethacrylate, disodium hydrogen phosphate and part of the water weighed, stirred, ...

Embodiment 3

[0055] A kind of vinegar acrylic emulsion, each component accounts for the weight ratio of emulsion total amount:

[0056] 45.0% vinyl acetate, 7.8% butyl acrylate, 10.0% isooctyl acrylate, 8.0% methyl methacrylate, 1.8% methacrylic acid, 1.0% alkylphenol polyoxyethylene ether OP-10, 1.7% alkyl Phenyl ether sulfosuccinate sodium salt MS-1, 54.3% water, 1.2% sodium polymethacrylate, 1.0% disodium hydrogen phosphate and 0.2% ammonium persulfate.

[0057] A kind of synthetic method of vinegar-acrylic emulsion:

[0058] A, take by weighing each component according to the weight ratio that each component of the above-mentioned vinegar-acrylic emulsion accounts for the total amount of the emulsion;

[0059] B. The weighed vinyl acetate, butyl acrylate, isooctyl acrylate, methyl methacrylate, methacrylic acid, alkylphenol polyoxyethylene ether OP-10, alkylphenol ether sulfosuccinate sodium Salt MS-1, sodium polymethacrylate, disodium hydrogen phosphate and part of the water weighed...

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Abstract

The invention discloses vinyl acetate-acrylic emulsion, a synthesis method thereof and an electrical steel coating. The vinyl acetate-acrylic emulsion comprises the following components by weight percent in terms of the total weight of the emulsion: 20.0-45.0% of vinyl acetate, 1.0-10.0% of butyl acrylate, 1.0-10.0% of 2-ethylhexyl acrylate, 1.0-10.0% of methyl methacrylate, 0.2-2.0% of methacrylic acid, 0.2-1.0% of alkylphenol polyoxyethylene ether OP-10, 0.4-2.0% of alkylphenol ether sulfosuccinate sodium salt MS-1, 40.0-65.0% of water, 0.2-1.2% of sodium polymethacrylate, 0.1-1.0% of sodium hydrogen phosphate and 0.2-1.0% of ammonium persulfate. The preparation method is characterized by firstly preparing pre-emulsion and an initiator water solution, mixing the pre-emulsion with the initiator water solution in batches and emulsifying the mixture, thus obtaining pure acrylic emulsion. The pure acrylic emulsion is narrow in particle size distribution and is fine in particle size. The prepared electrical steel coating has good resin dispersibility and long shelf life and is suitable for high-speed roller coating.

Description

technical field [0001] The invention relates to a vinegar-acrylic emulsion, a synthesis method thereof and an electrical steel coating prepared from the synthesized vinegar-acrylic emulsion. Background technique [0002] Electrical steel coatings are mainly rolled onto the surface of electrical steel sheets, and then baked and cured to form an insulating coating. Electrical steel coatings are mainly composed of inorganic salt solution, organic resin emulsion, additives and so on. The copolymer emulsion formed by the polymerization of acrylate and vinyl acetate is usually referred to as vinegar acrylic emulsion. [0003] For the inorganic salt solution in electrical steel coatings, because it contains water-soluble metal ions, acid radical ions, etc., it is required that the organic resin emulsion does not cause demulsification and gelation when added to the inorganic salt solution. At present, after mixing the acrylic emulsion widely used in electrical steel coatings with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F218/08C08F220/18C08F220/14C08F220/06C09D131/04
Inventor 孙致平王立涛董梅丰慧何峰占云高武战军孙静
Owner MAGANG (GROUP) HOLDING CO LTD
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