Super dispersant dedicated to water-based dyesHydroxyl polymer · non-ionic · WATERBASED DYE DISPERSANT
Using electrostatic repulsion and steric hindrance, it markedly improves the dye's compatibility, tinting strength and long-term storage stability in water-based inks, coatings and textile pastes.
- 🎨 Tinting strength · vividness ↑
- Anti-settling · anti-caking · anti-phase-separation
- 95% active content · highly water-soluble
- Textile penetration · evenness ↑
- Active content
- 0 ± %
- pH
- 0 – 0
- Viscosity
- 0 – 0 mPa·s
- Specific gravity
- 0 – 0
Core summary and mechanism of action
Hydroxyl polymer coats the dye particles — electrostatic repulsion + steric hindrance, a double line of defence against aggregation.
Dispersion stability · anti-flocculation and anti-settling
R780 is a functional additive that improves the dispersion stability of dyes in water-based systems and prevents flocculation and settling, keeping dye particles evenly dispersed for a long time.
Electrostatic repulsion + steric hindrance
Through electrostatic repulsion or steric hindrance it prevents dye particles from aggregating and keeps them evenly dispersed — a non-ionic hydroxyl polymer structure with wide formulation tolerance that does not conflict with other system components.
Compatibility · colour · stability
Better compatibility: no phase separation; colour optimisation: less colour-strength loss from aggregation, with tinting strength and vividness both up; storage stability: anti-settling and anti-caking, avoiding sedimentation or layering.
Physical and chemical properties (TDS)
Typical factory values; a COA test report accompanies every batch.
Appearance identification tip
The genuine product is a clear liquid that produces small white bubbles when swirled and carries an alkane odour — a quick identification feature for incoming-goods checks.
Main applications
Two main battlegrounds: high-end water-based pigment/dye systems and textile printing.
Inkjet ink · waterborne paint
Widely used in inkjet inks, waterborne paints and other high-end water-based pigment and dye systems, providing long-term anti-settling and excellent dispersion, with full colour and in-machine stability.
Printing paste · fibre colouring
Effectively improves the penetration and evenness of the dye in the fibre, improving colour development and fabric surface flatness, with even shade and consistent batches.
Recommended dosage
A wide dosage window — please run a ladder test to lock in the optimum for your system.
* The exact dosage depends mainly on the tension of the dye's surface electron layer; please confirm by a ladder test before production.
Packing and storage · sample request
Submit the form and a technical consultant will contact you within 24 hours to arrange a sample.
Packing and storage
01Product positioning
R780 is the waterborne member of the hyperdispersant series in the documentation and is positioned as a 'hyperdispersant for dyes.' The series selection section describes it as: 'R780 hyperdispersant is a hyperdispersant developed specifically for waterborne coatings, paints, and printing inks, with hyperdispersion and high leveling properties.' The product entry is named 'Waterborne dye-specific hyperdispersant R780.' (Data source: product handbook)
The system problem it addresses is stated in the overview: 'R780 waterborne dye-specific hyperdispersant is a functional additive used to improve the dispersion stability of dyes in waterborne systems and prevent flocculation and sedimentation. Through electrostatic repulsion or steric hindrance effects, it prevents dye particle aggregation and maintains uniform dispersion.' (Data source: product handbook)
The documentation also gives the chain of issues it is intended to solve: improve the compatibility of dyes with waterborne systems (such as waterborne inks, coatings, textile sizing pastes), avoid phase separation; reduce color strength loss caused by dye aggregation, improve tinting strength and color vividness; resist sedimentation and caking, improve the maintenance of system stability during long-term storage, avoid sedimentation or layering. (Data source: product handbook)
- Dedicated to waterborne systems: main component is a hydroxyl polymer, solvent is water, ionic type is nonionic.
- Form and appearance: transparent liquid, small white bubbles when shaken, alkane odor.
- System value: resists sedimentation and caking, improves the maintenance of system stability during long-term storage, avoids sedimentation or layering.
02Formulation system & mechanism of action
The documentation records that the path of action of this product is divided into two steps: first, electrostatic repulsion or steric hindrance effects prevent dye particle aggregation and maintain uniform dispersion; then, through this, improve the compatibility of dyes with waterborne systems (waterborne inks, coatings, textile sizing pastes), avoiding phase separation. (Data source: product handbook)
The resulting effect chain is: reduce color strength loss caused by dye aggregation → improve tinting strength and color vividness → resist sedimentation and caking → improve the maintenance of system stability during long-term storage, avoid sedimentation or layering. (Data source: product handbook)
- Prevent aggregation —— electrostatic repulsion / steric hindranceThrough electrostatic repulsion or steric hindrance effects, prevent dye particle aggregation and maintain uniform dispersion.
- System compatibility —— avoid phase separationImprove the compatibility of dyes with waterborne systems (such as waterborne inks, coatings, textile sizing pastes) and avoid phase separation.
- Performance retention —— tinting strength and storage stabilityReduce color strength loss caused by dye aggregation, improve tinting strength and color vividness; resist sedimentation and caking, improve the maintenance of system stability during long-term storage, avoid sedimentation or layering.
03Key parameters
The table below summarizes the main components and physicochemical properties of R780 as recorded in the product handbook. Values in the table are as recorded in the source (original notation and units retained).
| Item | Value / description |
|---|---|
| Main component | Hydroxyl polymer |
| Appearance | Transparent liquid; small white bubbles upon shaking; alkane odor. |
| pH value | 6.3-6.7 |
| Viscosity | 560-820mpas |
| Specific gravity | 1.01-1.05 |
| Ionic type | Non-ionic |
| Active ingredient | 95±% |
| Solvent | Water |
The entry for this grade does not list prohibited items or dedicated tests; items not recorded in the source do not appear in this table. (Data source: product handbook)
04Recommended dosage window
The source gives one range for the dosage of this product and notes the determining factor:
| Scenario | Dosage | Conditions & notes |
|---|---|---|
| General addition level | 0.5-10% of the product | Source text: "The amount added is mainly determined by the tension of the electron layer on the dye surface." |
The determining factor for dosage is the tension of the electron layer on the dye surface—this is the only adjustment basis given by the source; for actual formulations, please confirm by small-scale trials in combination with your own dye type and system.
This entry is the only dosage record for this grade in the source; there is no second line and no scenario-specific tiering; this page does not infer a denominator and does not perform cross-grade conversion. (Data source: product handbook)
05Applications
The source lists two categories of application areas:
- Water-based inks / coatings
- Used in inkjet inks, water-based paints, etc.
- Textile dyeing and printing
- Improves dye penetration and uniformity in fibers.
06How it differs from related grades
R780 belongs to the waterborne system tier. The materials also include R188 (hyperdispersant for waterborne coatings, paints, and inks) and D3-A (waterborne conductive carbon black hyperdispersant) as members for waterborne use; the three have different targets and should be selected by system and objective. Comparison below:
| Model | Positioning in materials (key points) | Main system / application | Addition level (as recorded) |
|---|---|---|---|
| R780 | Dye hyperdispersant; "a hyperdispersant developed specifically for waterborne coatings, paints, and inks with hyperdispersing and high leveling properties" | Waterborne inks/coatings (inkjet inks, waterborne paints); textile dyeing and printing | 0.5-10% of the product (depending on the surface electron layer tension of the dye) |
| R188 | "A hyperdispersant widely used in waterborne coatings, waterborne inks, and waterborne paints", a polymer compound produced under high-temperature and high-pressure conditions | Waterborne coatings / waterborne inks / waterborne paints; suitable for inorganic pigments such as titanium dioxide, carbon black, lithopone, heavy calcium carbonate, light calcium carbonate, and talc, as well as phthalocyanine-based organic pigments | 0.5%—2.5% by total weight of pigments and fillers |
| D3-A | "Water-soluble high-efficiency hyperdispersant", with good dispersibility, adsorption, and conductive effect on super conductive carbon black | Super conductive carbon black powder dispersion (aqueous phase); superconducting electronic products | Super conductive silicon carbon tubes at 1-2% of total formula weight; immersion type at 5-8% of total liquid amount |
Reading note: the dosage denominators of the three grades differ (product ratio in dye systems / total weight of pigments and fillers / total formula weight or total liquid amount), and the values cannot be applied interchangeably; the comparison only states each grade's positioning in the materials and applicable targets. (Data source: product handbook)
07Usage & storage
The materials record the following for this product's packaging and storage:
Packaging and storage
- Packaging: 25 kg / PE plastic drum.
- Storage conditions: cool, dry place; moisture-proof.
Not recorded in materials (not drafted on this page)
- This grade's entry does not list prohibited items, usage precautions, shelf life, compliance certification statements, or safety operation data (MSDS level) — not recorded in the available materials.
08FAQ
Which systems is R780 used in?
The materials list two categories: waterborne inks/coatings (used in inkjet inks, waterborne paints, etc.); textile dyeing and printing (improves dye penetration and uniformity in fibers).
The addition level spans 0.5–10%; how is the value determined?
The determining factor given in the materials is "the tension of the dye surface electron layer" — that is, the dosage depends on the surface properties of the dye used; selecting a value within the range requires bench trials according to dye type and system. The materials do not provide a comparison table by dye category, and this page does not draft one.
How does it differ from waterborne coating/conductive carbon black hyperdispersants?
By target: R780 is for dye dispersion (waterborne inks/coatings, textile dyeing and printing); R188 is for pigment and filler dispersion in waterborne coatings, waterborne inks, and waterborne paints; D3-A is for dispersion and conductivity retention of waterborne super conductive carbon black. The dosage denominators of the three differ and cannot be applied interchangeably.
What is the current status of R780?
R780 is an in-production grade (confirmed by the founder on 2026-10-07). The content on this page is compiled from product documentation; for selection and supply, refer to the latest materials and official information. (Data source: official product data)
AppendixData sources
The data on this page comes from product materials and is traceable item by item:
- Product handbook: R780 entry (overview / main components / physicochemical properties / application fields / addition level / packaging / storage conditions); series selection section (positioning statements for waterborne members); same-series comparison section (R188, D3-A entries).
- Cross-verification of materials: for the same grade entry, excerpts are consistent across the handbook, series volume, and content-edited version—three documents from a single source family mutually corroborate each other.
Not covered by the source material (not written on this page — to be added later)
- Prohibited items, usage precautions: not listed in this grade's entry (prohibited items for adjacent grades on the same page do not represent this grade and have not been carried over).
- Shelf life, compliance certification statements, safety operation data (MSDS level): not recorded in the available materials.
- Specialized testing and scenario-specific dosage tiers: not provided in the materials.