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Active polymeric dispersants are specialized additives designed to wet, disperse, and stabilize solid particles (pigments, fillers) in liquid media. They utilize anchoring segments to attach to the particle surface and polymer chains to create a steric barrier, preventing flocculation, lowering viscosity, and boosting color strength.
Key Aspects of Polymeric Dispersants
- Mechanism: Primarily use steric hindrance (long chain polymer barriers) to stabilize particles, though some provide electrosteric stabilization.
- Structure: Composed of anchoring groups that fix to the pigment surface and stabilizing chains that extend into the solvent.
- Types: Predominantly based on urethane, acrylic, and polyester chemistries.
- Applications: Used extensively in paints, coatings, inks, adhesives, and electronics for stabilizing organic/inorganic pigments, carbon blacks, and fillers.
- Key Benefits: Reduced viscosity during grinding, higher pigment loading, improved color development, and superior storage stability.
Examples and Products
- EFKA® PU 4020 (BASF): Polymeric dispersant for stabilizing inorganic pigments and carbon black.
- Afcona 4047: High molecular weight polyurethane dispersant for solvent-based systems, offering high performance in OEM and refinish coatings.
- Tallicin® K-9: A product with multiple anchor groups for both organic and inorganic pigments.
- SoulSperse Hyperdispersants: Higher molecular weight materials designed for high-performance stabilization.
These additives are critical in formulating low-volatile organic compound (VOC) and alkyl phenol ethoxylate (APE)-free coatings.
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Web results
Polymer Dispersions - Evonik Industries - Interfacial Chemistry
Evonik
https://interfacial-chemistry.evonik.com › applications
Evonik
https://interfacial-chemistry.evonik.com › applications
Dispersing agents: Our dispersing agents are surface-active ingredients, which ease the incorporation of pigments and fillers into a liquid. Agglomerates ...Read more
EFKA® PU 4020
BASF
https://dispersions-resins-products.basf.us › products › ef...
BASF
https://dispersions-resins-products.basf.us › products › ef...
EFKA PU 4020 is a polymeric dispersant for stabilizing inorganic pigments including carbon blacks. It also has an excellent performance in many organic ...Read more
New Polymeric Dispersants | 2019-07-11
PCI Magazine
https://www.pcimag.com › articles › 106309-new-poly...
PCI Magazine
https://www.pcimag.com › articles › 106309-new-poly...
Jul 11, 2019 — New polymeric dispersants are suitable for low-volatile organic compound (VOC) and alkyl phenol ethoxylate (APE)-free pigment dispersions for industrial and ...Read more
100% Active Polymeric Dispersants For Pigment Dispersion
isuoadditives.com
https://www.isuoadditives.com › Dispersants
isuoadditives.com
https://www.isuoadditives.com › Dispersants
It is a 100% active polymeric dispersant with no fillers or solvents. It delivers maximum efficiency in every application with excellent pigment wetting and ...Read more
People also ask
What are polymeric dispersants?
In a more specific definition, the term “polymeric dispersant” relates to applications in which solid particles are to be dispersed and stabilized in a liquid system. Here by far the main application is to disperse color pigments and particulate fillers for use in coatings.
Polymeric Dispersants - Wiley Online Library
Wiley Online Library
https://onlinelibrary.wiley.com › doi › pdf
Wiley Online Library
https://onlinelibrary.wiley.com › doi › pdf
What are the two types of dispersing agents?
Dispersants can be divided into three types: (1) polymer-type dispersants, (2) surfactant-type dispersants, and (3) inorganic-type dispersants (such as polyphosphoric acid).
Surfactant Basics 4 (Dispersants) - sanyo-chemical-solutions
sanyo-chemical-solutions
https://sanyo-chemical-solutions.com › 2024/04
sanyo-chemical-solutions
https://sanyo-chemical-solutions.com › 2024/04
Are chemical dispersants toxic?
Both dispersants and dispersed oil particles are toxic to some marine organisms. But because concentrations of dispersed oil are quickly diluted in the ocean, organisms are likely to be exposed only for short time periods.
10. What Are Some Environmental Impacts from Dispersant Use?
Office of Response and Restoration - NOAA
https://response.restoration.noaa.gov › oil-spills › resources
Office of Response and Restoration - NOAA
https://response.restoration.noaa.gov › oil-spills › resources
What is a dispersant used for?
Dispersants, also called dispersing agents, are chemical agents used to break up oil into smaller droplets in the water column. Dispersants can be applied on surface oil or below the surface, closer to an uncontrolled release of crude oil from a well blowout source.Oct 20, 2025
Dispersants | US EPA
EPA
https://www.epa.gov › emergency-response › dispersants
EPA
https://www.epa.gov › emergency-response › dispersants
Web results
Afcona 4201 High Molecular Weight Polymeric Dispersant
TRiiSO
https://www.tri-iso.com › afcona_4201_high_molecular...
TRiiSO
https://www.tri-iso.com › afcona_4201_high_molecular...
Afcona 4201 is supplied as nearly 100% active dispersant and is recommended for use in high solids and solvent-free polyurethane, epoxy, and UV cured coatings.Read more
Toward a universal polymeric dispersant for diverse pigment ...
Wiley
https://4spepublications.onlinelibrary.wiley.com › pen
Wiley
https://4spepublications.onlinelibrary.wiley.com › pen
Apr 3, 2025 — Polymeric dispersants, like other surface-active agents, function by reducing interfacial tension and adsorbing at the pigment-liquid interface.Read more
Dispersants - The Understood Misunderstood Additive
UL Prospector
https://www.ulprospector.com › knowledge › pc-disper...
UL Prospector
https://www.ulprospector.com › knowledge › pc-disper...
Sep 10, 2021 — Dispersants are additives that increase the permanency of a suspension of pigments in a liquid medium. Learn more here:
TERPLUS Dispersant | Product & Service
大塚化学株式会社
https://www.otsukac.co.jp › Home › Product & Service
大塚化学株式会社
https://www.otsukac.co.jp › Home › Product & Service
As polymeric dispersants, TERPLUS dispersants improve the dispersion of organic and inorganic pigments and contribute to their long-term stability.Read more
US5554682A - Dispersant polymers
Google Patents
https://patents.google.com › patent
Google Patents
https://patents.google.com › patent
A hydroxy-functional polymeric dispersant which is substantially free of acid groups, amine groups, and ethylenic unsaturation, the dispersant being ...
Preparation and characterization of polymeric dispersants ...
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
ScienceDirect.com
https://www.sciencedirect.com › article › abs › pii
by NA Yossif2017Cited by 31 — The prepared polymers were employed as novel polymeric dispersants for pigment dispersion in solvent based printing ink application. The mechanical and optical ...Read more
Scholarly articles for Active Polymeric Dispersant | |
Influence of polymeric surfactants on pesticidal … - Haas - Cited by 44 Dispersants - Rizvi - Cited by 16 Extending the boundaries of dispersant technology - Schofield - Cited by 121 | |
