Domů / Novinky / Novinky z oboru / Why is the paint film prone to developing depressions and losing its gloss
Novinky z oboru
Pigment Dispersion & Color Stability
Color flooding and floating, gradual coarsening in the can, settling that turns into a hard cake, and a topcoat that looks slightly duller than the standard — these are some of the most common appearance complaints in pigmented coatings and inks, and they almost always trace back to one thing: how well the pigment was wetted and dispersed in the first place.
How Dispersion Quality Shows Up in the Finished Product
Flooding & Floating
Different pigments separate from each other within the wet film, creating visible color shifts or streaks across the surface — most noticeable in multi-pigment formulations.
Gloss Loss
The finished film appears duller than expected, with surface gloss falling short of the target specification.
Coarsening & Settling
Pigment particles re-agglomerate during storage, leading to a gritty texture, increased viscosity, or hard sediment at the bottom of the container.
Color & Surface Inconsistency
Surface roughness or unevenness can appear alongside color variation, particularly across larger application areas or between batches.
Why Longer Grinding Isn't the Whole Answer
Extending grind time or increasing resin content are common ways to try to improve pigment dispersion, and they can help to a degree — but pigment particles have a natural tendency to re-agglomerate over time. Mechanical dispersion alone often can't maintain a stable state long-term, which is why flooding, coarsening, and settling tend to reappear during storage even after a formulation initially looked fine.
DH-5033 High-Performance Pigment Dispersant
DH-5033 uses a polymer design with specialized pigment-affinic groups to strengthen the interaction between pigment particles and the resin system. This improves wetting and dispersion efficiency across a wide range of pigment types, helping the system maintain a more uniform and stable state over time.
Compatible Pigment Types
Insufficient Dispersion
- Flooding and floating between pigments
- Color inconsistency and visible streaking
- Coarsening, settling, and hard caking on storage
- Gloss below target specification
- Surface roughness or reduced film flatness
Optimized with DH-5033
- Improved color consistency, reduced flooding/floating
- More stable viscosity and color over storage
- Reduced settling and easier re-dispersion
- Improved gloss and film flatness
- Contribution to water resistance, hardness, adhesion and weathering
Additional Performance Contributions
| Water Resistance | Helps support improved water resistance of the cured film |
| Hardness | Can contribute to a harder, more durable film surface |
| Adhesion | Supports overall adhesion performance alongside dispersion benefits |
| Weathering Resistance | Helps improve the film's resistance to long-term outdoor exposure |
| Rescue for Flocculated Systems | Can be considered as part of a corrective approach for systems that have already developed flocculation or gelling issues |
Frequently Asked Questions
Can DH-5033 be added to a system that has already started to gel or flocculate?
It can be considered as part of a corrective adjustment for systems already showing flocculation or gelling, though results will depend on how far the condition has progressed — early intervention generally gives better outcomes.
Will it change the gloss level of my existing formulation?
Improved dispersion often supports higher and more consistent gloss, so some formulations may see a gloss increase. Trial testing against your current standard is recommended to confirm the effect at your target dosage.
Is it suitable for both organic and inorganic pigments?
Yes, its pigment-affinic design has been evaluated across both inorganic pigments such as titanium dioxide and iron oxide, and organic pigment types.
Does using DH-5033 reduce the need for long grinding times?
Many users find that improved wetting efficiency can shorten the time needed to reach target fineness, though actual grind time reduction depends on the specific pigment, equipment, and target fineness.
Key Takeaway
Color flooding, floating, gloss loss, and progressive settling are dispersion-related issues that mechanical grinding alone often can't resolve over the long term.
- DH-5033 improves wetting and dispersion across TiO₂, lithopone, iron oxide, carbon black and organic pigments
- Helps maintain stable viscosity and color consistency in storage
- Supports improved gloss, film flatness, water resistance, hardness and weathering
- Can be considered as a corrective option for flocculated or gelled systems
Dealing with color flooding, gloss loss, or settling in your pigmented system? Request a technical data sheet or sample of DH-5033 for evaluation.
Explore Pigment Dispersants
