Preparation method of core-shell acrylic acid elastic emulsion containing phosphate group

A phosphate group, elastic emulsion technology, used in coatings, anti-corrosion coatings, etc., can solve the problems of insufficient cross-linking of the coating film, poor water resistance, etc.

Inactive Publication Date: 2012-10-31
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Peng Lixin (Synthesis of core / shell styrene-acrylic emulsion and preparation of water-based anti-rust coatings, New Building Materials, 2008: 43-45) used phosphate functional monomers in styrene-acrylic core-shell emulsion, and the amount of phosphate was 4% of the layer monomer, the water-based anti-rust paint film produced can withstand 3% salt water for 480 hours, which solves the problems of insufficient crosslinking and poor water resistance of ordinary styrene-acrylic emulsion coating films

Method used

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  • Preparation method of core-shell acrylic acid elastic emulsion containing phosphate group
  • Preparation method of core-shell acrylic acid elastic emulsion containing phosphate group
  • Preparation method of core-shell acrylic acid elastic emulsion containing phosphate group

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The components of the emulsion and parts by weight thereof (in gram) are as follows:

[0024]

[0025] Specific steps:

[0026] (1) Preparation of Phosphate Ester Monomer

[0027] Put 33.8ml of hydroxypropyl methacrylate in a cold water bath, and add 17.7gP in batches under high-speed stirring 2 o 5 , quickly raised the temperature to 65°C, and finished the reaction for 3.5 hours, then added 1.8ml of water, raised the temperature to 85°C, and reacted for 1.5 hours to obtain a transparent phosphate monomer.

[0028] (2) Add 10 mL of deionized water to sodium lauryl sulfate and ammonium persulfate respectively to fully dissolve them;

[0029] (3) Add 2 / 3 of the emulsifier solution in (2), 1 / 3 of the initiator solution, OP-10, and 50 mL of deionized water into a four-neck flask equipped with a stirrer, start stirring and heat up. A mixed monomer of methyl methacrylate (10.0 g) and butyl methacrylate was prepared. Get 10% of the mixed monomers and add it into the t...

Embodiment 2

[0032] The components of the emulsion and parts by weight thereof (in gram) are as follows:

[0033]

[0034] Specific steps:

[0035] (1) Preparation of Phosphate Ester Monomer

[0036] Put 40.6ml of hydroxypropyl methacrylate in a cold water bath, and add 17.7gP in batches under high-speed stirring 2 o 5 , quickly raised the temperature to 75°C, and finished the reaction for 4.0 hours, then added 2.3ml of water, raised the temperature to 90°C, and reacted for 2.0 hours to obtain a transparent phosphate monomer.

[0037] (2) Add 10 mL of deionized water to sodium lauryl sulfate and ammonium persulfate respectively to fully dissolve them;

[0038] (3) Add 2 / 3 of the emulsifier solution in (2), 1 / 3 of the initiator solution, OP-10, and 50 mL of deionized water into a four-neck flask equipped with a stirrer, start stirring and heat up. A mixed monomer of methyl methacrylate (9.4 g) and butyl methacrylate was prepared. Get 20% of the mixed monomers and add it into the th...

Embodiment 3

[0041] The components of the emulsion and parts by weight thereof (in gram) are as follows:

[0042]

[0043] (1) Preparation of Phosphate Ester Monomer

[0044] Put 47.3ml of hydroxypropyl methacrylate in a cold water bath, and add 17.7gP in batches under high-speed stirring 2 o 5 , quickly raised the temperature to 85°C, and finished the reaction for 4.5 hours, then added 3.0ml of water, raised the temperature to 95°C, and reacted for 2.5 hours to obtain a transparent phosphate ester monomer.

[0045] (2) Add 10 mL of deionized water to sodium lauryl sulfate and ammonium persulfate respectively to fully dissolve them;

[0046] (3) Add 2 / 3 of the emulsifier solution in (2), 1 / 3 of the initiator solution, OP-10, and 50 mL of deionized water into a four-neck flask equipped with a stirrer, start stirring and heat up. A mixed monomer of methyl methacrylate (9.4 g) and butyl methacrylate was prepared. Get 30% of the mixed monomers and add it into the three-necked bottle. C...

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Abstract

The invention relates to a preparation method of a core-shell acrylic acid elastic emulsion containing phosphate group. According to the method, hydroxypropyl methacrylate and P2O5 are adopted as raw materials, transparent phosphate monomer is prepared through a reaction, and the transparent phosphate monomer is adopted as a functional monomer for synthesizing the core-shell acrylic acid elastic emulsion. The preparation method of the phosphate functional monomer is advantaged in simple method and convenient operation. A monoester rate reaches 70%. When the synthesized core-shell acrylic acid elastic emulsion is used as an aqueous anti-corrosion paint, the anti-corrosion property and adhesion are both better than those of paints prepared from common acrylate emulsions.

Description

technical field [0001] The invention belongs to the field of water-based acrylic emulsion, and in particular relates to a method for preparing a core-shell type acrylic elastic emulsion containing phosphate groups. Especially suitable for water-based anti-corrosion coatings. technical background [0002] With the gradual strengthening of environmental protection awareness, water-based coatings have become an important development direction of modern coatings. Among them, the water-based anti-corrosion coating has a lot of room for development. At present, water-based coatings have problems such as short anti-corrosion period, easy flash corrosion after coating, poor acid and weather resistance, poor hardness and stability. [0003] Water-based acrylic anti-corrosion coatings are widely used because of their low price. However, the commonly used acrylic emulsion is not suitable for direct production of anti-corrosion coatings. It must be modified from the direction of poly...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/18C08F220/14C08F220/06C08F230/02C08F2/26C08F2/30C09D133/10C09D5/08
Inventor 李保山吕惠萍
Owner BEIJING UNIV OF CHEM TECH
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