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Inorganic silicon modified soap-free acrylic emulsion and preparation method thereof

A technology of acrylic emulsion and inorganic silicon, applied in the direction of coating, etc., can solve the problems of unstable scratch resistance, poor water resistance, etc., and achieve the effect of low cost, strong storage stability, and good thickening performance

Active Publication Date: 2020-11-27
广东福地斯绿色环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to overcome the problems of poor water resistance, instability, and poor scratch resistance in current coatings for acrylic emulsions, the application provides a method for preparing inorganic silicon-modified soap-free acrylic emulsions

Method used

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  • Inorganic silicon modified soap-free acrylic emulsion and preparation method thereof
  • Inorganic silicon modified soap-free acrylic emulsion and preparation method thereof
  • Inorganic silicon modified soap-free acrylic emulsion and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0036] In this embodiment, the preparation method of inorganic silicon modified soap-free acrylic acid emulsion is as follows:

[0037] (1) Add 10g of ethylene glycol butyl ether to a four-necked flask with a stirring and reflux device, and then raise the temperature to 150°C. Prepare 25.86g of acrylamide-methylpropanesulfonic acid, 10.72g of hydroxyethyl methacrylate, 21g of styrene, 20.28g of methyl methacrylate, 18g of butyl acrylate, 20g of dimethylformamide and 4.2g of benzoyl peroxide were mixed and stirred evenly to obtain a mixed solution A; after the temperature rose to 150°C , evenly drop the mixed solution A into the four-necked flask, drop it in about 5 hours, keep it warm for 2 hours and cool it down to 80°C, and discharge it for later use;

[0038] (2) Add 2 g of inorganic fumed silica to the spare material obtained in step (1) at room temperature, stir evenly to obtain a mixed solution B, and set aside;

[0039](3) Add 5.8g of mixed solution B prepared in step ...

Embodiment 2

[0043] In this embodiment, the preparation method of inorganic silicon modified soap-free acrylic acid emulsion is as follows:

[0044] (1) Add 20g of ethylene glycol butyl ether to a four-necked flask with a stirring and reflux device and then heat up to 150°C. In advance, 15.86g of acrylamide-methylpropanesulfonic acid, 15.72g of hydroxyethyl methacrylate, 21g of styrene, 23.28g of methyl methacrylate, 20g of butyl acrylate, 10g of dimethylformamide and 4.2g of benzoyl peroxide were mixed and stirred evenly to obtain a mixed solution A; after the temperature rose to 150°C , evenly drop the mixed solution A into the four-necked flask, drop it in about 5 hours, keep it warm for 2 hours and cool it down to 80°C, and discharge it for later use;

[0045] (2) Add 2 g of fumed inorganic phase silica to the spare material obtained in step (1) at room temperature, stir evenly to obtain a mixed solution B, and set aside;

[0046] (3) Add 5.8g of mixed solution B prepared in step (2),...

Embodiment 3

[0050] In this embodiment, the preparation method of inorganic silicon modified soap-free acrylic acid emulsion is as follows:

[0051] (1) Add 10g of ethylene glycol butyl ether to a four-necked flask with a stirring and reflux device, and then raise the temperature to 150°C. Prepare 25.86g of acrylamide-methylpropanesulfonic acid, 10.72g of hydroxyethyl methacrylate, 21g of styrene, 20.28g of methyl methacrylate, 18g of butyl acrylate, 20g of dimethylformamide and 4.2g of benzoyl peroxide were mixed and stirred evenly to obtain a mixed solution A; after the temperature rose to 150°C , evenly drop the mixed solution A into the four-necked flask, drop it in about 5 hours, keep it warm for 2 hours and cool it down to 80°C, and discharge it for later use;

[0052] (2) Add 2 g of inorganic fumed silica to the spare material obtained in step (1) at room temperature, stir evenly to obtain a mixed solution B, and set aside;

[0053] (3) Add 5.8g of mixed solution B prepared in step...

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Abstract

The invention belongs to the field of preparation of soap-free acrylic emulsion, and particularly relates to an inorganic silicon modified soap-free acrylic emulsion and a preparation method thereof.The preparation process comprises the following steps: (1) firstly, preparing acrylic resin containing hydrophilic groups through a solution polymerization method; (2) adding 50% of the total feedingamount of fumed silica into the acrylic resin obtained in the step (1), and uniformly mixing for later use; (3) putting part of the resin in the step (2) and the balance of inorganic fumed silica intodeionized water, stirring, adding potassium persulfate, continuously stirring and uniformly mixing, and dropwise adding an acrylate monomer; and (4) after dropwise adding is finished, purging with nitrogen, adding dimethylethanolamine, and discharging. The preparation method is simple, low in cost, safe, environmentally friendly and very suitable for industrial production, and the prepared acrylic emulsion product is high in storage stability, excellent in water resistance, good in scratch resistance and good in thickening performance.

Description

technical field [0001] The invention belongs to the field of preparation of soap-free acrylic emulsion, and in particular relates to an inorganic silicon-modified soap-free acrylic emulsion and a preparation method thereof. Background technique [0002] Acrylic emulsion is the abbreviation of copolymer emulsions such as acrylates, methacrylates, and acrylic acid. Generally, acrylic low-ester organic compounds such as methyl acrylate are used as the main monomer, and acrylonitrile, styrene, and maleic acid di It is prepared by copolymerization of butyl ester, methacrylate, vinyl chloride, vinylidene chloride or vinyl acetate. For example, acrylic emulsions have the advantages of superior weather resistance, good aging resistance, gloss retention, high gloss, excellent adhesion, fine appearance, and good film-forming properties. The acrylic emulsion system in which the hard monomer styrene is introduced into the acrylic emulsion is called acrylic emulsion for short. In addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/58C08F220/20C08F212/08C08F220/14C08F220/18C08F265/10C08F220/06C08F2/44C08F2/22C08F265/06C08F257/02C08K3/36C09D151/00C09D7/61
CPCC08F212/08C08F220/14C08F257/02C08F265/06C08F265/10C08K3/36C09D151/003C09D7/61C08F220/585C08F220/20C08F220/1804C08F220/06C08F2/44C08F2/22
Inventor 罗良胜
Owner 广东福地斯绿色环保科技有限公司
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