Fluo-copolymer/polyacrylate blending emulsion and its production and use

A technology of polyacrylate and acrylic emulsion, which is applied in the direction of coating, etc., and can solve the problem of lack of composite coatings

Inactive Publication Date: 2007-01-17
3M INNOVATIVE PROPERTIES CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, so far, there is still a lack of composite coatings with excellent comprehensive properties (such as stain resistance, water and oil resistance, weather resistance and acid and alkali resistance) and low cost in the prior art.

Method used

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  • Fluo-copolymer/polyacrylate blending emulsion and its production and use
  • Fluo-copolymer/polyacrylate blending emulsion and its production and use
  • Fluo-copolymer/polyacrylate blending emulsion and its production and use

Examples

Experimental program
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preparation example Construction

[0044] The method for preparing the fluorocopolymer / polyacrylate blend emulsion of the present invention generally comprises: mixing the fluorocopolymer aqueous dispersion of about 1-95 parts by weight with the acrylic acid emulsion of about 99-5 parts by weight to obtain a stable Fluorine copolymer / polyacrylate blend emulsion.

[0045] When mixed, the fluorocopolymer may be added in the form of an aqueous dispersion in which the concentration of the fluorocopolymer is usually about 10-60%.

[0046] Mixing can be carried out at normal temperature and pressure, using conventional mixing equipment and methods in the art. Preferred conditions are a temperature of about 20°C and a pressure of about 1 atmosphere.

[0047] When using polymerized monomers to replace polyacrylate emulsions, or to additionally use polymerized monomers in addition to polyacrylate emulsions, usually about 10-95 parts by weight of acrylate mixed monomer emulsions are added or acrylate monomers The body mi...

Embodiment 1

[0058] Preparation of Blend Emulsion 1-3

[0059] Add 5g, 10g or 20g THV 340C (terpolymer of TFE / HFP / VDF, a kind of fluororesin aqueous dispersion purchased from 3M Company) to 100g AC261 pure acrylic emulsion (purchased from Rohm & Hass Company, PA state, USA) liquid with a solid content of 50%, a pH of 9.5, and a density of 1.32 g / cm 3 , with a viscosity of 76mPa·S), and then mixed uniformly to obtain stable fluorocopolymer / polyacrylate blend emulsion 1-3.

Embodiment 2

[0061] Determination of water contact angle

[0062] The blended emulsions 1-3 prepared in Example 1 were respectively coated on the glass surface to form a film with a thickness of about 10 μm, and the contact angle of water droplets on the surface was measured. The results are listed in Table 1:

[0063] control

[0064] From the results in Table 1, it can be clearly seen that after adding the fluorocopolymer, the water contact angle of the blended emulsion is significantly increased, thereby greatly improving the stain resistance.

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Abstract

A fluorine multi-polymer / polyacrylic acid ester blended emulsion, its production and use are disclosed. The mixed emulsion consists of fluorine multi-polymer dispersion liquid 1-95 proportion and polyacrylic emulsion or its monometer 5-99 proportion. It's cheap, has better performances of anti-foul, water and oil proofing, weather-resisting and / or acid and alkali-resisting.

Description

technical field [0001] The invention relates to the field of coatings, more specifically, the invention relates to a fluorocopolymer / polyacrylate blend emulsion, its preparation method, and its application in preparing fluorocopolymer / polyacrylate composite coatings. Background technique [0002] At present, with the widespread use of architectural coatings, higher and higher requirements are placed on the comprehensive performance of coatings. In addition to requiring that the coating is harmless to human and animal health and environmentally friendly, it is also required to have good stain resistance, water and oil resistance, weather resistance, acid and alkali resistance, and high elasticity. [0003] The architectural coatings currently on the market include pure fluorine coatings and pure acrylic coatings. The former has excellent comprehensive performance, but its price is too high, which undoubtedly limits its application; the latter has better comprehensive performa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/08C08L27/12C09D133/08
Inventor 喻志刚李云峰张雁燕
Owner 3M INNOVATIVE PROPERTIES CO
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