As a supplier of chemical additives, we often face the dilemma of choosing between pigment universality and spot color development when developing hyperdispersants. To meet the demands of today’s increasingly competitive market and provide better quality and price, Taige Tech-58687 block polyurethane hyperdispersant is like this – it is particularly “scientific” and suitable for grinding and dispersing spot color slurries. Don’t miss it!

 

1、 The Birth of Tech-58687: Evolution from “Comb” to “Block”

Market mainstream: Most polyurethane dispersants on the market are mainly comb shaped polyurethane dispersants, with multiple branches (such as polyether units) connected to the main chain, forming a regular structure similar to a “comb”. The molecular chains are long and the monomer variability is strong. The steric hindrance effect can be optimized by adjusting the length and density of the branches.

Breakthrough in adsorption morphology: Traditional random polymers, due to their loose structure, tend to have a “horizontal” or “circular” adsorption morphology, resulting in low contribution to steric hindrance. In contrast, the comb like branched structure of comb like polyurethane dispersants can form dense “tail shaped adsorption”, significantly improving steric hindrance efficiency.

Schematic diagram of Tech-58687 adsorption on carbon black surface

 

Innovation of Tech-58687: Block Aggregation Technology

1. Strong anchoring: More abundant and selective affinity pigment anchoring groups are precisely embedded in polymer segments. These functional groups are designed for the surface characteristics of specific pigments, especially carbon black, organic pigments, and effect pigments, to form stronger and denser chemical anchoring.

2. Intelligent solvation chain: The design of solvation chain segments (usually polyether/polyester) takes into account the changes in PVC (pigment volume concentration) during the coating drying process. This enables Tech-58687 to dynamically regulate its adsorption force on pigment surfaces. Provide sufficient steric hindrance during the dispersion grinding stage (high solvent content, low PVC); During the film-forming and drying stage (solvent evaporation, PVC elevation), the chain segments can more tightly wrap around the pigment, providing stronger steric hindrance stability, effectively preventing later flocculation, and ensuring the final color development effect of the coating film.

3. Synergistic effect: The block structure makes the functional zoning between the anchoring group and the solvation chain segment clearer, and the synergistic effect between the two is stronger, exhibiting performance beyond traditional comb dispersants in spot color applications.

 

The advantages of the spot color king Tech-58687

Tech-58687, with its unique block structure, demonstrates unparalleled advantages in spot color applications:

1.  Ultimate color and transparency: ​​
   High color intensity: strong anchoring and optimized steric hindrance make pigment particles fully depolymerized and stably dispersed, and maximize the release of pigment color intensity and saturation, especially for high-performance organic pigments such as carbon black, phthalocyanine blue/green, quinacridone red/purple, DPP red and some inorganic pigments.Excellent transparency: effectively prevents pigment flocculation and return to coarseness, ensuring that the dispersion system has excellent transparency, which is essential for metal base paint, transparent color paste, clear varnish in the coating of the color paste and the effect coating that requires high transparency.
   ​ Pure tone: reduce the problems such as floating color, blooming and fog shadow caused by poor dispersion, and present purer, brighter and more consistent tone.
   2.  Wide resin compatibility: ​​
   The carefully designed solvation segment makes it compatible with all kinds of mainstream resin systems ​ (such as 1K hydroxyacrylic acid, 2K PU polyurethane, polyester, alkyd, epoxy, etc.).
   Excellent compatibility ensures that the color paste will not have problems such as precipitation, flocculation, thickening and loss of gloss when mixed into different systems, simplifying the formula design and improving the versatility of the color paste (in the target resin system).
   3.   Minimal impact on paint film performance: ​​
   Excellent chemical resistance: strong anchoring and dense coating reduce the negative impact of pigment on paint film resistance, help to maintain or even improve the water resistance, solvent resistance, acid and alkali resistance of paint film.
   Good drying: the solvation segment is designed reasonably, which has little influence on the drying speed of the paint film and will not cause slow drying or affect the crosslinking reaction.
   Stable storage: provide excellent long-term storage stability to prevent the pigment from precipitating, returning to roughness, increasing viscosity or performance decli

Tech-58687 Actual Effect: Seeing is believing

We selected commonly used polyurethane dispersants in the market to disperse different pigments in different resin systems and conducted parallel tests. The color development is as follows:

1. 1K acrylic resin system

Dispersing carbon black in the 1K propane system, Tech-58687 exhibits significantly higher blackness (lower L * value) and blue phase, with excellent transparency, significantly better than the control sample. When dispersing high saturation organic pigments, the color intensity is higher and the color tone is purer.

 

2. 1K acrylic resin silver powder paint

The color paste used for silver powder paint, Tech-58687 dispersed color paste has little interference with the arrangement of silver powder, strong metallic feeling, bright and transparent base color, and no obvious fog shadow on the side.

 

3. PU polyurethane system

In the PU polyurethane system, Tech-58687 (black right 3, other colors right 2) has good compatibility with dispersed pigments, excellent color development, high gloss of the paint film, and good resistance performance.

 

4. Polyester system

In polyester coil coatings, Tech-58687 (second from right) also exhibits high color development and excellent stability.

 

Based on comprehensive laboratory testing and practical application effects, Taige Tech-58687 block polyurethane super dispersant has fully demonstrated its excellent performance in the field of spot color: the king of spot color development: with its unique block structure and strong anchoring groups, it provides top-level color development strength, transparency, and pure color tone for carbon black, high saturation organic pigments, and effect pigments, making it an ideal choice for pursuing ultimate spot color effects. Dynamic stability guarantee: For the optimized solvation chain segment in the drying process, dynamic adsorption regulation is achieved to effectively prevent later flocculation and ensure consistent performance from the color paste to the final coating. Widely compatible and worry free: compatible with multiple mainstream resin systems (1K acrylic acid PU、 Polyester and other materials exhibit excellent compatibility, simplify formulations, and enhance the applicability of colorants. Protector of paint film performance: It has minimal impact on key properties such as chemical resistance and dryness of the paint film, and may even be helpful. High cost-effectiveness solution: In spot color application scenarios, its outstanding performance provides significant value beyond its cost, effectively enhancing the competitiveness of end products. Choosing the TAG Tech-58687 means injecting more vibrant vitality, transparent texture, and reliable performance into your spot color application!