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Preparation method of re-dispersible latex powder of acrylic acid

A technology for redispersible latex powder and acrylic acid, applied in the field of preparation of acrylic acid redispersible latex powder, can solve problems such as poor water resistance, and achieve the effects of less energy consumption, improved water resistance, and low viscosity

Inactive Publication Date: 2009-11-11
SHANGHAI SUNRISE CHEMISTRY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the raw material itself, this kind of redispersible latex powder has poor water resistance, and it needs to add a lot of protective glue to spray when spray drying.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Synthesis of acrylate core-shell polymer emulsion

[0032] Preparation of nuclear pre-emulsion: 96 grams of deionized water, 7 grams of dodecyl diphenyl ether disulfonic acid sodium salt and 2 grams of nonylphenol polyoxyethylene ether were stirred and dissolved in a pre-emulsification kettle, and then Add 5.4 grams of chain transfer agent dodecyl mercaptan, mixed monomers: 8.1 grams of N-methylolacrylamide, 48.3 grams of acrylic acid, and 207 grams of methyl methacrylate. After the addition, continue stirring for 30 minutes to obtain Nuclear pre-emulsion.

[0033] Preparation of the nuclear initiator solution: 80 grams of deionized water, 2.7 grams of ammonium persulfate, and 2.7 grams of sodium bicarbonate were stirred and dissolved to obtain the nuclear initiator solution.

[0034] The preparation of the shell pre-emulsion: 216 grams of deionized water, 5 grams of alkyl alcohol polyether type nonionic and 12 grams of dodecyl diphenyl ether disulfonic acid sodium...

Embodiment 2

[0040] (1) Synthesis of acrylate core-shell polymer emulsion

[0041] Preparation of nuclear pre-emulsion: 96 grams of deionized water, 7 grams of dodecyl diphenyl ether disulfonic acid sodium salt and 2 grams of nonylphenol polyoxyethylene ether were stirred and dissolved in a pre-emulsification kettle, and then Add 5.4 grams of chain transfer agent dodecyl mercaptan, mixed monomers: 16.4 grams of N-methylolacrylamide, 40 grams of acrylic acid, and 207 grams of styrene. After the addition, continue to stir for 30 minutes to obtain the nuclear pre-emulsification liquid.

[0042] Preparation of the nuclear initiator solution: 80 grams of deionized water, 2.7 grams of ammonium persulfate, and 2.7 grams of sodium bicarbonate were stirred and dissolved to obtain the nuclear initiator solution.

[0043] The preparation of the shell pre-emulsion: 216 grams of deionized water, 5 grams of alkyl alcohol polyether type nonionic and 12 grams of dodecyl diphenyl ether disulfonic acid sod...

Embodiment 3

[0049] (1) Synthesis of acrylate core-shell polymer emulsion

[0050] Preparation of nuclear pre-emulsion: 96 grams of deionized water, 7 grams of dodecyl diphenyl ether disulfonic acid sodium salt and 2 grams of nonylphenol polyoxyethylene ether were stirred and dissolved in a pre-emulsification kettle, and then Add 5.4 grams of chain transfer agent dodecyl mercaptan, mixed monomers: 8.1 grams of N-methylolacrylamide, 48.3 grams of acrylic acid, and 207 grams of methyl methacrylate. After the addition, continue stirring for 30 minutes to obtain nuclear pre-emulsion;

[0051] Preparation of the nuclear initiator solution: 80 grams of deionized water, 2.7 grams of ammonium persulfate, and 2.7 grams of sodium bicarbonate were stirred and dissolved to obtain the nuclear initiator solution.

[0052] The preparation of the shell pre-emulsion: 216 grams of deionized water, 5 grams of alkyl alcohol polyether type nonionic and 12 grams of dodecyl diphenyl ether disulfonic acid sodium...

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Abstract

The invention discloses a preparation method of re-dispersible latex powder of acrylic acid. The preparation method comprises the preparation of the re-dispersible latex powder emulsion of acrylic acid and the spray drying of the re-dispersible latex powder emulsion of acrylic acid. The re-dispersible latex powder emulsion of acrylic acid adopts design of core-shell particles and is obtained by acrylic acid monomer in a way of emulsion polymerization. When the emulsion is sprayed and dried, a mineral anti-adhesive agent is added to obtain the re-dispersible latex powder of acrylic acid. The re-dispersible latex powder of acrylic acid can be added in concrete and mortar to improve the compressive strength, rupture strength, wear resistance, toughness, adhesion strength, water-retention capacity and constructability of the concrete and mortar.

Description

technical field [0001] The invention relates to the preparation of latex powder, in particular to a preparation method of acrylic acid redispersible latex powder. technical background [0002] With the development of my country's social economy, people's living standards are gradually improving, and people's requirements for living environment and living space are getting higher and higher. Residential buildings that meet environmental protection, energy saving, comfort and high quality have become the development trend in the future. In recent years, my country's new wall materials have developed rapidly, but the new wall materials are quite different from traditional clay bricks. The ordinary mortar used for clay brick masonry and plastering is not suitable for the construction of new wall materials. While new building materials such as lightweight walls and gypsum boards are used in large quantities, the corresponding supporting products have not kept up, and traditional ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F220/18C08F212/08C08F2/30C08F2/26C08J3/12
Inventor 郑柏存傅乐峰王小兵王非
Owner SHANGHAI SUNRISE CHEMISTRY CO LTD
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