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Aqueous exterior wall coating material with high solid content and low viscosity

An exterior wall coating, high solid content technology, applied in the direction of coating, can solve the problems of large labor cost and time increase, multi-manpower and time, long construction procedure, etc., achieve good environmental protection effect, high stability effect, easy construction Effect

Active Publication Date: 2010-10-13
CHINA PAINT MFG CO SHENZHEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this regard, the solid content of coatings currently on the market is relatively low at about 50%, and the viscosity is usually high, about 100KU. It is necessary to add water to dilute during construction (usually the suitable viscosity during construction is 65---85KU ), the thickness of the one-time construction should not be too thick, otherwise it is easy to crack, so in fact the construction procedure is longer and requires more manpower and time
In the environment of rapid economic growth, the cost and time of labor increase greatly. The existing coating needs to be applied many times, which consumes man-hours, but the cost is obvious.

Method used

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  • Aqueous exterior wall coating material with high solid content and low viscosity
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0068] This kind of water-based high-solid low-viscosity exterior wall coating mainly includes: deionized water: 2%, thickener PUR40: 0.3%, ammonia water: 0.2%, water-based high-solid styrene-acrylic emulsion: 15%, Dispersant: 1.5%, water-based high solid content elastic acrylic emulsion: 25%, wetting agent: 0.5%, kaolin and nano high opacity polymer: 19%, rutile titanium dioxide: 35%, defoamer: 0.7% With coalescent: 0.8%. The defoamer in the above composition is SN-399 defoamer, and the film-forming aid is TEXANOL solvent.

[0069] The above composition according to figure 1 The process shown in the manufacturing process mainly includes the following steps:

[0070] Step a: Weigh the raw materials according to the weight ratio of the above composition, add 15% high-solid styrene-acrylic emulsion, 1.5% dispersant, 0.5% wetting agent and 0.3% defoamer in sequence, stir at low speed for 5-10 minutes to fully mix uniform;

[0071] Step b: Add 35% of rutile titanium dioxide, 1...

Embodiment 2

[0080] The difference between Example 2 and Example 1 is that the weight ratio of each component is changed. This kind of water-based high-solid low-viscosity exterior wall paint mainly includes: deionized water: 2.0%, thickener PUR40: 0.3%, ammonia water: 0.2%, water-based high-solid styrene-acrylic emulsion: 25%, dispersant: 1.5%, water-based high-solid elastic acrylic emulsion: 16%, wetting agent: 0.5%, kaolin and nano high opacity Force polymer: 24%, rutile titanium dioxide: 29%, defoamer: 0.7% and film-forming aid: 0.8%. The defoamer described in the above composition is SN-399 defoamer, and the film-forming aid is TEXANOL solvent

[0081] The above composition according to figure 1 The technological process shown is prepared, and it mainly comprises the following steps:

[0082] Step f: Weigh the raw materials according to the weight ratio of the above composition, add 25% of water-based styrene-acrylic emulsion, 1.5% of dispersant, 0.5% of wetting agent and 0.3% of de...

Embodiment 3

[0091] The difference between Example 3 and Example 1 and Example 2 is that the weight ratio of each component changes. This kind of water-based high-solid low-viscosity exterior wall paint mainly includes: deionized water: 2.0% , thickener PUR40: 0.3%, ammonia water: 0.2%, water-based high-solid styrene-acrylic emulsion: 20%, dispersant: 1.5%, water-based high-solid elastic acrylic emulsion: 21%, wetting agent: 0.5%, kaolin And nano-high hiding power polymer: 21%, rutile titanium dioxide: 32%, defoamer: 0.7% and film-forming aid: 0.8%. The defoamer described in the above composition is SN-399 defoamer, and the film-forming aid is TEXANOL solvent

[0092] The above composition according to figure 1 The technological process shown is prepared, and it mainly comprises the following steps:

[0093] Step k: Weigh the raw materials according to the weight ratio of the above composition, add 20% of styrene-acrylic emulsion, 1.5% of dispersant, 0.5% of wetting agent and 0.3% of def...

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Abstract

The invention discloses an aqueous exterior wall coating material with high solid content and low viscosity. The coating material with low viscosity and easy construction can be prepared by the following steps of: fully mixing components such as water, a dispersion stabilizer, a filler with high covering power, a wetting agent, titanium white, aqueous styrene-acrylic emulsion with high solid content, elastic acrylic acid emulsion with high solid content, a pH regulator, an antifoaming agent, a thickening agent, a film-forming additive and the like according to a certain process flow; and reasonably matching and combing the filler with high covering power and other components by fully utilizing the high solid content and high stabilizing effect of the aqueous styrene-acrylic emulsion and the high-efficiency film-forming property and weather resistance of the elastic acrylic acid emulsion. The coating material can directly achieve the construction effect during the construction of an exterior wall and can achieve the effect of high covering power without being thinned by adding water.

Description

technical field [0001] The invention relates to a paint, in particular to a water-based high-solid-content low-viscosity exterior wall paint for building exterior walls. Background technique [0002] With the improvement of people's living standards and the continuous development of society, people pay more and more attention to the choice of architectural decorative coatings. The simpler the construction requirements for coatings, the better. In terms of the protection of the substrate, at the same time, the construction of the coating is required to be simple and convenient, and at the same time, it is required to maintain high decorative requirements such as color retention. [0003] At present, when ordinary exterior wall coatings are used as architectural decoration coatings, they need to be diluted with water during construction, and the construction period is relatively long. Usually, a primer is applied, and a second topcoat is required at the same time to achieve a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/00C09D125/14C09D7/12
Inventor 黎冬辉康文烈程红旗
Owner CHINA PAINT MFG CO SHENZHEN
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