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Environment-friendly coalescent compound

The technology of a coalescing agent and composition is applied in the field of coalescing agents to achieve the effects of superior color development, good compatibility, and improvement of paint film hardness and wet friction performance

Inactive Publication Date: 2019-01-18
孙春妮
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a more stable environment-friendly coalescent composition to overcome the shortcomings of the existing binary mixed ester coalescent

Method used

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  • Environment-friendly coalescent compound
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～5

[0022] Form the coalescent composition of the present invention according to the weight percent listed in table 1, then allocate in the commercially available water-based latex paint according to the formula ratio listed in table 2, allocate and stir according to the normal use method of each water-based latex paint .

[0023] Table 1: Component content of coalescence agent in embodiment 1~5

[0024]

[0025] Wherein, the polymer emulsion in embodiment 1 and 2 is polyacrylate (PA) emulsion, the polymer emulsion in embodiment 3 is polyvinyl acetate (VA) emulsion, and the polymer emulsion in embodiment 4 is self-crosslinking waterproof benzene Acrylic emulsion (SA) emulsion, the polymer emulsion in embodiment 5 is vinegar acrylic emulsion.

[0026] Table 2: Proportion of the environment-friendly coalescent composition of Examples 1-5

[0027] (the data unit of each component in the table is parts by mass)

[0028]

[0029]

[0030] After the preparation of the paint ...

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Abstract

The invention provides an environment-friendly coalescent compound which comprises glutaric acid and dibutyl adipate; the boiling points of the two components are proximate to each other and are higher, within a range of 295-305 DEG C; when the environment-friendly coalescent compound is applied as a coalescent to a water-based coating, an excellent volatile gradient can be formed and film defectsof shrinkage cavity, cracking, and the like, are difficult to occur, so that the rinsing resistance is excellent and is especially obvious under low temperature; the environment-friendly coalescent compound has slight influence on the glossiness of water-based coating and is capable of improving the hardness and wet friction performance of the film; the waste-based coating adopting the environment-friendly coalescent compound is low in odor, nontoxic and easy to biodegrade.

Description

technical field [0001] The invention belongs to the field of coalescents, in particular to an environment-friendly coalescent composition used for water-based latex paint compositions. Background technique [0002] The polymers in water-based latex paints exist in the form of stable suspended latex particles. When the water-based paint is painted on the surface of the substrate, as the water volatilizes, the distance between the latex particles shrinks continuously, extrusion deformation occurs, and finally a continuous polymer coating film is formed. What is most important in the coalescence process of waterborne coatings is the ability of the polymer particles to deform and fuse together continuously. If the ambient temperature is lower than the glass transition temperature (Tg) of the polymer in the emulsion, the latex particles will not coalesce well, causing cracks in the polymer coating film, and in severe cases, the coating film will form a layer with no adhesion po...

Claims

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Application Information

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IPC IPC(8): C09D7/63C09D5/02
CPCC09D5/024
Inventor 陈红
Owner 孙春妮
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