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What is the difference between wetting dispersants and self-drying alkyl acid wetting dispersants?
2024-12-23
Wetting dispersants and self-drying alkyl acid wetting dispersants are essentially wetting dispersants, but there may be some differences in their specific ingredients, characteristics, and application scenarios. The following is a detailed comparison of the two:
1. Definition and composition
Wetting dispersant:
It is a surfactant that can reduce the interfacial tension between liquid/solid, improve the dispersion efficiency of pigments, and improve the storage stability of coatings.
The ingredients are diverse and may include modified polyesters, polycarboxylic acid-alkyl ammonium salts, unsaturated fatty acid polyamine amides, and acidic polyester salt solutions.
Self-drying alkyl acid wetting dispersant:
It is a type of wetting dispersant, with special emphasis on its self-drying and alkyl acid components.
Self-drying means that the dispersant can promote the drying process of the coating in the coating.
The alkyl acid component may provide it with specific chemical properties and wetting and dispersing properties.
2. Characteristics and functions
Wetting dispersant:
The main function is to wet and disperse pigments to prevent pigment sedimentation and agglomeration.
It can improve the gloss, hiding power, and rheology of the coating.
When the molecular weight is low, the wetting efficiency is high; when the molecular weight is high, it may provide a better spatial effect to prevent pigment flocculation.
Self-drying alkyl acid wetting dispersant:
In addition to the basic functions of wetting dispersants, self-drying is also emphasized.
Self-drying helps the coating dry faster after painting and improves production efficiency.
The alkyl acid component may provide it with additional chemical stability or compatibility with other coating components.
3. Application scenarios
Wetting dispersant:
Widely used in water-based coatings, printing inks, pesticides, inks, pigments, and other fields.
Suitable for various occasions where pigment dispersion efficiency and coating performance need to be improved.
Self-drying alkyl acid wetting dispersant:
More suitable for coating systems that require fast drying, such as automotive coatings, industrial coatings, etc.
In these applications, self-drying alkyl acid wetting dispersants can provide faster drying speed and better coating performance.
In summary, wetting dispersants and self-drying alkyl acid wetting dispersants differ in composition, characteristics, and application scenarios. Which type of wetting dispersant to choose depends on the specific coating formulation, construction conditions, and performance requirements.
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