Pigment Dispersions with Excellent Long-Term Storage Stability
Inkjet Pigment Dispersion
Pigment dispersions are materials in which solid pigment particles are uniformly dispersed in a liquid medium, and they are used across a wide range of fields, including inks, paints, coatings, and cosmetics. Through dispersion technology, pigment aggregation is prevented, improving performance such as color clarity, stability, coatability, and storage stability.
Leveraging proprietary dispersion technologies, DNP Fine Chemicals provides inkjet pigment dispersions that combine beautiful color reproduction, high reliability, and environmental consideration. As fundamental materials supporting high-quality printing, they can be utilized in a variety of applications.
What is a Pigment Dispersion?
To achieve high-performance pigment dispersions, it is essential to appropriately control pigment particle size, select dispersants that are compatible with the particle surface, and optimize the dispersion process itself. When these elements are properly combined, they significantly influence color performance, suppression of color unevenness, and durability properties such as light resistance and abrasion resistance.
In particular, technologies that uniformly disperse fine particles and ensure long-term stability by preventing sedimentation and aggregation are indispensable for supporting the quality and reliability of final products. To deliver stable performance in applications such as printing and coating, advanced dispersion design and precise process control are required.
Main Applications of Pigment Dispersion
The pigment dispersions developed and manufactured by our company are mainly used in the applications listed below. Even when using the same pigment, the design of a pigment dispersion varies depending on the dispersion medium and the final application, which is why different technical approaches are required for each type of ink.
Pigment Dispersions for Solvent Ink
■Dispersion Medium
Organic solvents (such as acetate esters, ketones, and alcohols)
■Features
These dispersions strongly dissolve into substrates such as PVC, vinyl, and films, providing excellent weather resistance, water resistance, and adhesion. They enable vivid color reproduction and deliver high performance even in outdoor applications such as signage and vehicle graphics.
■Required Properties of Pigment Dispersions
Stable dispersion must be maintained even for pigments that are difficult to dissolve in solvents. High durability is required to prevent sedimentation and aggregation even at high pigment concentrations. In addition, to support outdoor applications, resistance to ultraviolet light and abrasion is essential.
Pigment dispersion for UV ink
■Dispersion Medium
UV-curable oligomers and monomers (such as acrylates)
■Features
Curing occurs instantly when exposed to ultraviolet (UV) light, providing extremely high drying speed. It can be printed directly onto a wide range of substrates, including paper, plastics, metals, and glass. Additionally, as a low-VOC type without solvents, it offers relatively low environmental impact.
■Required Properties of Pigment Dispersions
The ability to uniformly disperse pigments in high-viscosity resins is essential. The dispersion must also be designed so that pigments do not inhibit the UV curing reaction. Furthermore, depending on the application, high transparency and high color saturation may be required, making advanced dispersion technology critical to meet these demands.
Pigment Dispersions for Water-Based Ink
■Dispersion Medium
Water, with water-soluble resins and additives
■Features
As an environmentally friendly, low-VOC ink, it is widely used in office printers and home inkjet printers. It is suitable for absorbent substrates such as paper, but printing on non-absorbent substrates like films may require surface treatment or the use of a primer.
■Required Properties of Pigment Dispersions
Pigments must remain stably dispersed in water, preventing aggregation and sedimentation. To avoid nozzle clogging, pigments should be micronized and uniformly dispersed at the nanometer level. Additionally, achieving both quick-drying performance and water resistance requires careful compatibility design with resins and additives.
DNP Fine Chemicals’ Pigment Dispersion
The quality of inkjet printing is greatly influenced by the performance of pigment dispersions. Our dispersion technology uniformly and stably disperses pigment particles at the nanometer level, achieving sharp, bleed-free color reproduction and high durability.
Designed to meet a wide range of needs—from high-definition printing to industrial applications—our technology further expands the possibilities of printing.
Features of DNP Fine Chemicals’ Pigment Dispersion
Pigment dispersions used in inkjet inks are essential materials for uniformly and stably dispersing pigment particles. Pigments are inherently difficult to dissolve in water or solvents and tend to aggregate. Therefore, dispersants and surfactants are used to micronize the particles and maintain them uniformly in the liquid, maximizing the performance of the ink.
High-quality pigment dispersions have the following characteristics:
・High dispersion stability: Resistant to sedimentation and aggregation even during long-term storage
・Excellent color reproduction: Accurately reproduces the vivid colors of the pigments
・Water and light resistance: Prevents bleeding and fading of printed materials
・Superior nozzle compatibility: Reduces clogging of print heads and maintains stable ink ejection
In this way, pigment dispersions act as the essential materials supporting the precision, durability, and color fidelity of inkjet printing. In addition to providing our existing product lineup, we also offer customized design and manufacturing to meet customer applications and requirements, delivering solutions that further expand the possibilities of printing.
Frequently Asked Questions About Pigment Dispersion Development and Manufacturing
Q. Will Pigment Dispersions Experience Sedimentation or Aggregation During Long-Term Storage?
A. Thanks to our dispersion technology, pigment dispersions maintain a stable dispersed state over the long term. As long as proper storage conditions—such as temperature, light exposure, and container sealing—are observed, the product can be used without any loss of quality.
Q. Is It Possible to Request Pigment Dispersions Tailored to Specific Substrates or Applications?
A. Yes, it is possible. We can customize pigment dispersions according to your requirements, including the type of resin or solvent, particle size distribution, viscosity, and other specifications.
Q. Do Your Products Comply with Chemical Regulations in Various Countries (e.g., REACH, TSCA)?
A. Yes. Our products are designed in compliance with the chemical regulations of major countries, and we also support the necessary registration and regulatory requirements for import and export.
Q.Is a Safety Data Sheet (SDS) Available?
A. We can provide it upon request. Documentation, including safety information for handling and environmental compliance details, will be prepared and delivered promptly.
Q. Is It Possible to Provide Small Samples or Small-Lot Production?
A. Yes. We can flexibly provide small-lot production for evaluation before scale-up or for prototype development.
Q. Can You Provide Support for Testing and Evaluation?
A. Yes. We provide sample materials tailored to your application and support property evaluations and printing tests, helping you achieve optimal ink design.
Leave Inkjet Pigment Dispersion Development and Manufacturing to DNP Fine Chemicals
Leveraging advanced dispersion technology and material design capabilities, we provide pigment dispersions optimized for your specific applications. With solutions that excel in quality, stability, and customizability, we expand the possibilities of printing. Please entrust your needs to DNP Fine Chemicals.
Please note that inquiries from individual customers cannot be accepted. Thank you for your understanding.
