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Preparation method of phosphate modified acrylate emulsion

The technology of acrylate and methyl methacrylate is applied in the field of preparation of phosphate-modified acrylate emulsion, can solve problems such as high price, and achieve the effects of low product cost, friendly corrosive environment and improved thermal stability

Active Publication Date: 2012-04-11
JIANGSU SOBUTE NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But this kind of unsaturated monomer containing phosphoric acid group needs to be prepared specially, and the price is expensive

Method used

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  • Preparation method of phosphate modified acrylate emulsion
  • Preparation method of phosphate modified acrylate emulsion
  • Preparation method of phosphate modified acrylate emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] The component formula is composed as follows:

[0048]

[0049] The synthesis steps are as follows:

[0050] (1) One aggregation

[0051] Add 20% of the total amount of water, 30% emulsifier and all methyl methacrylate, styrene, methacrylic acid, acrylonitrile, and dodecanethiol into a four-necked flask, and stir at a high speed at 50°C to prepare a Polymerized pre-emulsion, cooled for later use;

[0052] Primary polymerization process: Add 50% of the total amount of water to the four-necked bottle, add the primary polymerization pre-emulsion to the four-necked bottle, heat to 60°C, add 40% FeSO 4 ·7H 2 O, then add dropwise the solution formed by dissolving 70% tert-butyl hydroperoxide in 2% water, and then add dropwise the solution formed by dissolving carving white powder in 5% water, and react for 30 minutes. Then add 50% ammonia solution with a mass fraction of 50%. The molecular weight of the primary polymerized emulsion is 2000, and the particle size is 0....

Embodiment 2

[0065] The component formula is composed as follows:

[0066]

[0067] The synthesis steps are as follows:

[0068] (1) One aggregation

[0069] Add 20% of the total amount of water, 30% emulsifier and all methyl methacrylate, styrene, methacrylic acid, acrylonitrile, and dodecanethiol into a four-necked flask, and stir at a high speed at 50°C to prepare a Polymerized pre-emulsion, cooled for later use;

[0070] Primary polymerization process: Add 50% of the total amount of water to the four-necked bottle, add the primary polymerization pre-emulsion to the four-necked bottle, heat to 60°C, add 40% FeSO 4 ·7H 2 O, then add dropwise the solution formed by dissolving 70% tert-butyl hydroperoxide in 2% water, and then add dropwise the solution formed by dissolving carving white powder in 5% water, and react for 30 minutes. Then add 50% ammonia solution with a mass fraction of 50%. The molecular weight of the primary polymerized emulsion is 2200, and the particle size is 0....

Embodiment 3

[0083] The component formula is composed as follows:

[0084]

[0085] The synthesis steps are as follows:

[0086] (1) One aggregation

[0087] Add 20% of the total amount of water, 30% emulsifier and all methyl methacrylate, styrene, methacrylic acid, acrylonitrile, and dodecanethiol into a four-necked flask, and stir at a high speed at 50°C to prepare a Polymerized pre-emulsion, cooled for later use;

[0088] Primary polymerization process: Add 50% of the total amount of water to the four-necked bottle, add the primary polymerization pre-emulsion to the four-necked bottle, heat to 60°C, add 40% FeSO 4 ·7H 2 O, then add dropwise the solution formed by dissolving 70% tert-butyl hydroperoxide in 2% water, and then add dropwise the solution formed by dissolving carving white powder in 5% water, and react for 30 minutes. Then add 50% ammonia solution with a mass fraction of 50%. The molecular weight of the primary polymerized emulsion is 3000, and the particle size is 0....

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Abstract

The invention relates to a preparation method of phosphate modified acrylate emulsion. The preparation method not only has relatively low cost, but also can effectively improve the flame retardation property of polyacrylate emulsion. The preparation method of phosphate modified acrylate emulsion comprises the following steps of: (1) primary polymerization: pre-emulsifying 10-20 parts of methyl methacrylate, 2-3 parts of methacrylic acid, 1-2 parts of acrylonitrile and 10-15 parts of styrene, then performing primary emulsion polymerization, and adjusting the pH value to obtain the primary polymerized emulsion; and (2) secondary polymerization: pre-emulsifying 30-45 parts of hydroxyl methacrylate substance, then adding the pre-emulsified product and 5-10 parts of phosphate monomer into the primary polymerized solution, and performing secondary emulsion polymerization to obtain the phosphate modified acrylate emulsion with a core-shell structure, wherein the phosphate monomer is trichloroethyl phosphate, trichloropropyl phosphate or n-ethyl phosphate; the molecular weight of polymer in the obtained phosphate modified acrylate emulsion is 2000-3000; and the particle size is 0.2-0.6 mum.

Description

technical field [0001] The invention relates to a method for preparing a phosphate-modified acrylate emulsion. Background technique [0002] Acrylate emulsion is widely used as latex paint due to its excellent water resistance, adhesion, film-forming, weather resistance, gloss and color retention and mechanical properties. It is widely used in textile fabrics, leather, paper, fiberglass casing And it is widely used in building exterior walls, but because it is an organic substance, it is flammable in case of fire after film formation, produces thick smoke and a large number of harmful substances, which affects its application range, so it is very important to modify its flame retardancy necessary. [0003] Introducing unsaturated monomers containing phosphoric acid groups into acrylate emulsions for copolymerization modification can improve the flame retardancy of the emulsions. However, this phosphoric acid group-containing unsaturated monomer needs special preparation an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/28C08F220/14C08F220/06C08F220/44C08F212/08C08F8/40C08F2/24C09D133/14
Inventor 缪昌文杨冲刘加平冉千平丁蓓周栋梁
Owner JIANGSU SOBUTE NEW MATERIALS
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