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Anti-floating color additives: the invisible guardian of paint color

2025-05-30

Anti-floating color additives: the invisible guardian of paint color 

In our daily life, from the walls of the home to the body of the car, from children's toys to outdoor billboards, the colorful 

world can not be separated from the decoration of paint. However, have you ever thought that behind these bright and 

long-lasting colors, there is actually an “invisible guardian” - anti-floating color additives? Although it is not obvious, 

it plays a vital role in ensuring the uniformity and durability of paint colors.


What is floating color?

Before discussing anti-floating additives, let's first understand what is “floating color”. Floating color refers to the 

phenomenon that during the drying or film-forming process of a coating, due to the uneven interaction between 

pigment particles, some pigment particles float to the surface of the coating while others sink, ultimately resulting in 

uneven color on the surface of the coating. This not only affects the aesthetics of the coating, but also reduces its 

weather resistance, corrosion resistance and other properties.


Reasons of floating color 

The phenomenon of floating color is usually related to the following factors:


Differences in pigment properties: Different pigments have differences in particle size, shape, density and surface 

charge, etc. These differences may lead to uneven dispersion of pigments in the coating system.


Resin-pigment interaction: the different affinity between resin and pigment may also affect the distribution of pigment 

in the coating.


Construction conditions: Changes in construction conditions such as temperature, humidity, coating thickness and 

drying speed may also exacerbate the floating color phenomenon.


Mechanism of anti-floating color additives 

Faced with the problem of floating color, anti-floating color additives come into being. They are a kind of chemical additives 

that can improve the dispersion of pigment and adjust the interaction force between pigment and resin. Anti-floating 

additives work through the following mechanisms:


Wetting and dispersion: 

Anti-floating additives can effectively reduce the surface tension between pigment particles, so that the pigments can be 

more easily wetted by the resin solution, thus promoting the uniform dispersion of pigments and reducing the aggregation 

between pigment particles.


Spatial resistance effect: some anti-floating additives can form a protective film on the surface of the pigment, increase the 

spatial distance between the pigment particles, and prevent them from flocculation or settlement due to their proximity to 

each other.


Charge adjustment: 

by adjusting the charge state on the surface of pigment particles, anti-floating color additives can reduce the electrostatic 

attraction between pigment particles and further promote the stable dispersion of pigments.


Control of drying process: Some anti-floating color additives can also influence the drying speed or mode of the coating 

to ensure that the pigments are evenly distributed during the drying process of the coating.


Application examples of anti-floating additives 

Architectural Coatings: In interior and exterior wall coatings, anti-floating additives can ensure the uniformity of wall color 

and enhance the overall decorative effect.


Automotive Coatings: Automotive paints have extremely high color requirements, and the application of anti-floating color 

additives can ensure that the body color can remain bright and colorless under different angles and lighting conditions.


Industrial Coatings: 

In anti-corrosion coatings for ships, bridges, pipelines and other large-scale facilities, anti-floating color additives not only help 

to maintain a beautiful appearance, but also enhance the protective properties of the coating and prolong its service life.

Art Coatings and Printing Inks: In the field of art creation and printing, anti-floating color additives ensure the accurate 

reproduction of colors, so that each piece of artwork and each print can perfectly present the designer's intention.


Conclusion 

Anti-floating color additives, as the “invisible guardian” in the coating industry, are not directly involved in the creation 

of color, but play an irreplaceable role in ensuring the color quality and enhancing the performance of coatings. With the 

progress of science and technology and the improvement of environmental protection requirements, the future research of 

anti-floating color additives will pay more attention to high efficiency, environmental protection, multifunctionality, and bring 

more colorful and long-lasting visual enjoyment to our life. Next time, when you stop to enjoy those colorful scenes, think 

about it, behind the scenes may be a part of the credit of the anti-floating color additives.