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High dirt resistance emulsion paint and preparation method and application thereof

A technology of stain resistance and latex paint, applied in the field of coatings, can solve the problems of poor stain resistance of latex paint, and achieve the effects of low water absorption, excellent comprehensive performance and high stain resistance

Inactive Publication Date: 2009-12-09
GUANGZHOU LEOBO PAINT TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The primary purpose of the present invention is to overcome the weak point that the existing latex paint has poor stain resistance and provide a high stain-resistant latex paint

Method used

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  • High dirt resistance emulsion paint and preparation method and application thereof
  • High dirt resistance emulsion paint and preparation method and application thereof
  • High dirt resistance emulsion paint and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0057] (1) Preparation of Silicone Modified Epoxy Resin Emulsion

[0058] as attached figure 1 As shown, add 40g of bisphenol A type epoxy resin E-44 (Guangzhou Dongfeng Chemical Industry Co., Ltd.) to a 1000ml four-necked flask equipped with a thermometer, condenser and stirrer (the average relative molecular weight of this resin measured by GPC is about 600 ~700), 10g of ethylene glycol monopropyl ether and 2g of vinyltriethoxysilane. Stirring was started and the temperature was raised to 130°C. After the resin was dissolved, 0.04g of tetraethylammonium bromide was added, followed by reaction at 130°C for 3h. After the reaction, cool down to 75°C, add 200g MMA, 180g BA, 20g MAA, 10g OP-10, 18g MS-1 and 4g DBS. 516 g of deionized water was slowly added dropwise, and the dropwise addition was completed within 2 hours. A silicone-modified epoxy resin emulsion with a solid content of 47.4% and an organic solvent content of 1% was obtained;

[0059] (2) Preparation of modifie...

Embodiment 2

[0080] (1) Preparation of Silicone Modified Epoxy Resin Emulsion

[0081] Add 60g of bisphenol F type epoxy resin (GELR-170) (Hongchang Electronic Materials Co., Ltd.), 8g of propylene glycol methyl ether and 2.5g of Z-6032 in the 1000ml four-necked flask equipped with thermometer, condenser and stirrer (Dow Corning Corporation). Start stirring and raise the temperature to 120°C. After the resin is dissolved, add 0.03g of tetramethylammonium chloride, and then react at 120°C for 2h. After the reaction, the temperature was lowered to 70°C, and 175g of MMA, 170g of BA, 15g of MAA, 15g of OP-10, 19g of MS-1 and 2g of DBS were added. 533.5 g of deionized water was slowly added dropwise, and the dropwise addition was completed within 3 hours. A silicone-modified epoxy resin emulsion with a solid content of 45.9% and an organic solvent content of 0.8% was obtained;

[0082] (2) Preparation of modified acrylic emulsion

[0083] Add 0.5g OP-10, 1g MS-1, 0.5g DBS, 20g MMA, 18g BA, ...

Embodiment 3

[0094] (1) Preparation of Silicone Modified Epoxy Resin Emulsion

[0095] Add 30g of bisphenol A type epoxy resin (GELR-134) (Hongchang Electronic Materials Co., Ltd.), 5g of ethylene glycol methyl ether and 1gZ- 6040 (Dow Corning Corporation). Start stirring and raise the temperature to 140°C. After the resin is mixed evenly, add 0.05g of n-butyltriphenylphosphine, and then react at 150°C for 3h. After the reaction, the temperature was lowered to 80°C, and 205g of MMA, 205g of BA, 15g of MAA, 15g of OP-10, 18g of MS-1 and 2g of DBS were added. 504 g of deionized water was slowly added dropwise, and the dropwise addition was completed within 3 hours. A silicone-modified epoxy resin emulsion with a solid content of 49.1% and an organic solvent content of 0.5% was obtained;

[0096] (2) Preparation of modified acrylic emulsion

[0097]Add 1g OP-10, 1.5g MS-1, 0.5g DBS, 15g MMA, 13g BA, 2g HEMA and 197.5g deionized water into a 1000ml four-neck flask at one time, emulsify at ...

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Abstract

The invention discloses a high dirt resistance emulsion paint and a preparation method and an application thereof. The preparation method of the invention comprises the following steps: preparing epoxy resin emulsion modified with organic silicon by the reaction of organosiloxane monomer and epoxy resin; then reacting the mixture of emulsifier, initiator and acrylic monomer until appearing blue color, adding epoxy resin emulsion modified with organic silicon and initiator to obtain modified acrylic acid emulsion; mixing the modified acrylic acid emulsion with film forming additive, pigment, filler and additive to obtain the high dirt resistance emulsion paint of the invention. The emulsion paint viscosity scope of the high dirt resistance emulsion paint is 2000-4000MPa.s / 25 DEG C and the emulsion paint has excellent scratch resistant property, wear-resisting property and adhesiveness. The preparation method of the invention is simple; in the practical preparation process of emulsion paint, the amount of the added film forming additive is reduced effectively and no other stain repellent needs to add, thus reducing the cost and benefiting to the environmental protection.

Description

technical field [0001] The invention belongs to the field of coatings, in particular to a latex paint with high stain resistance and a preparation method and application thereof. Background technique [0002] Latex paint is a kind of water-based paint prepared by adding pigments, fillers and various additives based on acrylate copolymer emulsion. It is mainly used for interior and exterior wall decoration of buildings. [0003] Most latex paints prepared from conventional acrylate copolymer emulsions have good weather resistance and chemical resistance after film formation at room temperature, but poor stain resistance, which seriously affects the use effect of latex paints. The main reason for the poor stain resistance of latex paint is due to the low glass transition temperature (Tg) and high water absorption of the latex paint film: if the Tg is too low, after the latex paint is formed into a film, the paint film will shrink back when the ambient temperature is slightly h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/04C09D163/00C09D5/02C09D5/16E04F13/02
Inventor 丁贤勇汪清云张强
Owner GUANGZHOU LEOBO PAINT TECH
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