Waterborne super dispersantPolyether alcohol amino-amine compound · highly water-soluble
A polymer produced at high temperature and pressure with an exact ratio, combining excellent molecular weight with a narrow molecular-weight distribution — markedly raising the milling efficiency and storage stability of pigments and fillers.
- 💧 Readily water-soluble · low dosage, good dispersion
- ✨ Tinting strength · hiding power · colour development ↑
- 🛡️ Suppresses re-agglomeration and viscosity rebound
- 🧪 Excellent compatibility · minimal effect on gloss and water resistance
- Density
- 0 kg/m³
- Flash point
- 0 ℃
- Acid / amine value
- ≤0 / ≤0 mgKOH/g
- Dispersion grade
- Grade II
Rebound suppression · rheology lab
Toggle the comparison: without R188 viscosity rebounds upward during storage; with R188 the curve stays flat all the way.
Narrow-distribution polymer
A polymer produced with an exact ratio under high temperature and pressure, with excellent molecular weight and a fairly narrow molecular-weight distribution — it is highly compatible with the whole coating system and effectively improves colour development.
Ideal paint viscosity · milling efficiency ↑
Using R188 gives the ideal coating viscosity and raises pigment/filler milling efficiency — the dispersion process is completed in less time with less energy.
Suppressing re-agglomeration and viscosity rebound
Effectively suppresses re-agglomeration and viscosity rebound of pigments and fillers and improves storage stability — pastes and coatings stay free of thickening, re-agglomeration and settling in long-term storage.
Physical and chemical properties (TDS)
Typical ex-works values; every batch ships with a COA test report.
Core performance
From dispersion efficiency to film quality, five functions cover the whole waterborne chain.
Shorter dispersion time
Through wetting and dispersing action it cuts the time and energy needed to complete dispersion — milling and grinding efficiency rise markedly.
Stabilising the dispersion
It stabilises the already dispersed pigment paste and modifies the surface properties of the pigment particles, adjusting particle mobility — no re-agglomeration in long-term storage.
Better film quality
It raises gloss, tinting strength and hiding power and improves colour development and tinting.
Defect prevention
Effectively prevents floating and flooding, flocculation and settling.
Broad compatibility
It is highly compatible with the other additives and emulsions in waterborne coating, ink and paint formulations, with very little effect on gloss and water resistance.
Scope and pigment systems
R188 can be widely used in the production of all kinds of waterborne coatings, inks and paints.
Calculated on the total pigment/filler weight; fine-tune according to colour strength and fineness.
Packing and storage · sample request
Submit the form and a technical consultant will contact you within 24 hours to arrange a sample.
Addition level
Calculated on the total pigment/filler weight.
Packing and storage
01Product positioning
Name and positioning. R188 is a polymer compound hyperdispersant for waterborne coatings, waterborne inks, and waterborne paints, produced under high-temperature and high-pressure conditions using a precise ratio. The documentation page title is 'Waterborne coatings hyperdispersant R188'; main component 'polyether alcohol semicarbazide compound'; official one-liner 'Dedicated to waterborne systems, hyperdispersing'. (Data source: product handbook / official product data)
Summary (verbatim from source): 'R188 waterborne coatings hyperdispersant is a hyperdispersant developed by our company and widely used in waterborne coatings, waterborne inks, and waterborne paints. It is a polymer compound produced under high-temperature and high-pressure conditions using a precise ratio. It has excellent molecular weight and a fairly narrow molecular weight distribution; therefore, during the manufacture of waterborne coatings, it has very good compatibility with the entire coating system, and improves the coloration of waterborne coatings, waterborne inks, and waterborne paints. The coating viscosity obtainable by selecting R188 waterborne coatings hyperdispersant; it has been proven by numerous examples that after adding R188 hyperdispersant, the pigment/filler paste processing efficiency is improved, the coarsening of pigments and fillers and the viscosity rebound of pigment/filler paste are effectively inhibited, thereby improving the storage stability of waterborne coatings, waterborne inks, and waterborne paints.' (Data source: product handbook)
Product advantages (verbatim from source): 'R188 waterborne coatings hyperdispersant is a water-soluble high-efficiency hyperdispersant, with low dosage, good dispersing effect, and good leveling performance. It has good effects on various pigments and fillers, and has good compatibility with other additives and emulsions in waterborne coatings, waterborne inks, and waterborne paints formulations; it has little effect on the gloss and water resistance of waterborne coatings, and is an ideal dispersant in the production process of waterborne coatings, waterborne inks, and waterborne paints.' (Data source: product handbook)
Function list (verbatim from source): 'The function of R188 waterborne coatings hyperdispersant is to use a wetting dispersant to reduce the time and energy required to complete the dispersion process, stabilize the dispersed pigment dispersion, modify the surface properties of pigment particles, and adjust the mobility of pigment particles, specifically reflected in the following aspects: shorten dispersion time, improve gloss, improve tinting strength and hiding power, improve color development and color adjustment, prevent floating and flooding, prevent flocculation, prevent sedimentation.' (Data source: product handbook)
- Applicable pigments: titanium dioxide, carbon black, lithopone, heavy calcium carbonate, light calcium carbonate, talc powder, and other commonly used inorganic pigments; it also has considerable dispersing effect on phthalocyanine-based organic pigments.
- Compatibility statement (verbatim from source): It has good compatibility with other additives and emulsions, and has little effect on the gloss and water resistance of waterborne coatings.
- Dosage basis: 0.5%—2.5% based on total weight of pigments and fillers (denominator as written in the documentation).
- This grade is a historically listed grade (Discontinued), and the documentation is retained; this page is organized as-is from historical documentation.
02Formulation system & mechanism of action
Route (as stated in the documentation): By wetting and dispersing, 'reduce the time and energy required to complete the dispersion process, stabilize the dispersed pigment dispersion, modify the surface properties of pigment particles, and adjust the mobility of pigment particles.' (Data source: product handbook)
Field effect chain (verbatim from source): improve the pigment/filler paste processing efficiency → effectively inhibit the coarsening of pigments and fillers and the viscosity rebound of pigment/filler paste → improve the storage stability of waterborne coatings, waterborne inks, and waterborne paints. (Data source: product handbook)
Function list (verbatim from source): shorten dispersion time, improve gloss, improve tinting strength and hiding power, improve color development and color adjustment, prevent floating and flooding, prevent flocculation, prevent sedimentation. (Data source: product handbook)
- Wetting —— reduce dispersion time and energyUse a wetting dispersant to reduce the time and energy required to complete the dispersion process.
- Stabilization —— modify particle surfaceStabilize the dispersed pigment dispersion, modify the surface properties of pigment particles, and adjust the mobility of pigment particles.
- Shelf life —— inhibit coarsening and viscosity reboundImprove paste processing efficiency; inhibit coarsening of pigments and fillers and viscosity rebound; improve storage stability.
03Key parameters
The table below summarizes the main components and physicochemical properties of R188 recorded in the documentation (original wording and units from the documentation are retained).
| Item | Value / description |
|---|---|
| Main component | Polyether alcohol semicarbazide compound |
| Appearance | White slightly yellowish waxy block |
| Solubility | Readily soluble in water |
| Odor | Has an ammonia odor |
| Amine value | ≦18mgKOH/g |
| Density | 1080㎏/m3 |
| Flash point | 260℃ |
| Acid value | ≦5mgKOH/g |
| Degree of dispersion | ‖ |
This grade's entry does not list prohibited items or special tests; items not recorded in the documentation do not appear in this table. For dosage basis, see Section 4. (Data source: product handbook / official product data)
04Recommended dosage window
The documentation provides one statement regarding the dosage of this product, with the denominator stated within the sentence:
| Scenario | Dosage | Conditions & notes |
|---|---|---|
| Recommended dosage | 0.5%—2.5% based on total weight of pigments and fillers | Original source text: "Recommended dosage: 0.5%—2.5% based on total weight of pigments and fillers"; the denominator is the total weight of pigments and fillers |
The denominator is explicitly stated (total weight of pigments and fillers). The documentation provides a single range and no second line; values within the range should be determined by small-scale trials according to pigment type and actual system.
This item is the only dosage record for this grade in the documentation, and the denominator is explicitly stated; this page does not propose other bases or convert across grades. (Data source: product handbook)
05Applications
The application areas listed in the documentation are as follows:
- Waterborne coatings
- Production of various waterborne coatings; very good compatibility with the entire coating system.
- Waterborne inks
- Production of waterborne inks; improves storage stability (as stated in the documentation).
- Waterborne paints
- Production of waterborne paints; for statements regarding compatibility and minor effect on gloss/water resistance, see Section 1.
- Pigment aspects
- Common inorganic pigments such as titanium dioxide, carbon black, lithopone, heavy calcium carbonate, light calcium carbonate, and talc; it also has a considerable dispersing effect on phthalocyanine-based organic pigments.
06How it differs from related grades
R188 belongs to the waterborne system tier. Other members in the materials that also fall under waterborne use include R780 (waterborne dye direction) and D3-A (waterborne conductive carbon black direction); the three have different targets, so select by system and objective. Comparison as follows:
| Model | Material positioning (key points) | Main system / application | Addition level (as recorded in materials) |
|---|---|---|---|
| R188 | '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 titanium dioxide, carbon black, lithopone, heavy calcium carbonate, light calcium carbonate, talc, and other inorganic pigments as well as phthalocyanine-based organic pigments | 0.5%—2.5% based on total weight of pigments and fillers |
| R780 | Hyperdispersant for dyes; 'a hyperdispersant with hyperdispersion and high leveling properties developed specifically for waterborne coatings, paints, and inks' | Waterborne inks/coatings (inkjet ink, waterborne paint); textile dyeing and printing | 0.5-10% of the product (depending on the tension of the electron layer on the dye surface) |
| D3-A | Water-soluble high-efficiency hyperdispersant; has good dispersibility, adsorption, and conductive effect for superconductive carbon black | Superconductive carbon black powder dispersion (aqueous phase); superconductive electronic products | Superconductive silicon-carbon tube: 1-2% of total formulation weight; immersion type: 5-8% of total liquid volume |
Reading note: the dosage denominators of the three models are different (total weight of pigments and fillers / product ratio in the dye system / total formulation weight or total liquid volume), and the values cannot be applied interchangeably; the comparison only states their respective material positioning and applicable targets. (Data source: product handbook)
Replacement & selection
For selection and replacement evaluation after discontinuation, refer to the following in-production information:
Replacement guidance: official materials do not publish a direct replacement model for this model; according to the existing site wording 'for replacement selection, see models in the same series currently marketed', the following are in-production models in the waterborne system direction, for selection evaluation reference (same-use reference, not an official replacement statement).
- Waterborne carbon black dedicated dispersant R400Same-use, in production (waterborne dispersion)In-production dispersant dedicated to carbon black dispersion in waterborne systems.
- Waterborne superconductive carbon black hyperdispersant D3-ASame-use, in production (waterborne system)In-production hyperdispersant for waterborne systems (target: superconductive carbon black).
Note: for replacement evaluation, combine with system lab trials; the dosage basis of the comparison models differs from this model, and values cannot be applied interchangeably. (Data source: product handbook / official product data)
07Usage & storage
The following points are itemized from the materials; items not listed in the materials are not drafted on behalf of the source.
As recorded in materials (transcribed verbatim)
- Appearance and physical properties: white slightly yellow waxy block; solubility: easily soluble in water; odor: ammonia odor; amine value ≦18mgKOH/g; density 1080㎏/m3; flash point 260℃; acid value ≦5mgKOH/g; dispersity ‖.
- Addition level: recommended addition level is 0.5%—2.5% based on total weight of pigments and fillers.
- Packaging: 25 kg/bag, PE double-layer bag.
- Storage conditions: cool, dry place; moisture-proof.
Not recorded in materials (not written on this page)
- This model's entry does not list prohibited items, usage precautions, shelf life, compliance certification statements, or safe handling data (MSDS level)—the available materials do not record them.
08FAQ
What is R188?
Waterborne coatings, paints, and inks hyperdispersant: a polymer compound produced under high-temperature and high-pressure conditions with precise ratios; functions include wetting and dispersion, shortening dispersion time, improving gloss and tinting strength, preventing floating/flooding, flocculation, settling, etc. (as transcribed from the materials list). (Data source: product handbook)
What is the addition level? What is the denominator?
The original text in the materials: 'Recommended addition level is 0.5%—2.5% based on total weight of pigments and fillers'; the denominator is total weight of pigments and fillers. The value within the range should be determined according to pigment type and lab trials in the actual system. (Data source: product handbook)
How to distinguish it from R780 / D3-A?
The three are distinguished by target: R188 is aimed at pigment and filler dispersion for waterborne coatings, waterborne inks, and waterborne paints; R780 is aimed at dye dispersion (waterborne inks/coatings, textile dyeing and printing); D3-A is aimed at dispersion and conductivity maintenance of waterborne superconductive carbon black. The three have different dosage denominators and cannot be applied interchangeably. (Data source: product handbook)
What is the current status of R188?
R188 has been listed as a Discontinued model (materials retained). The content on this page is organized verbatim from historical materials and is not intended as a recommendation for products currently marketed; for selection, refer to current in-production models and the latest materials. (Data source: official product data)
What is the replacement model for R188?
Official materials do not publish a direct replacement model; section 6 of this page, 'Replacement & selection', lists in-production models of the same family / same use (including on-site links) for selection evaluation.
Can R188 still be purchased? Is there inventory?
This model has been listed as a Discontinued model (materials retained); this page is not published as sales information; for supply and selection, refer to current in-production models and official information.
Why was R188 discontinued?
Reason for discontinuation: not recorded in the existing materials (not drafted on this page).
AppendixData sources
The data on this page come from product materials and are traceable item by item:
- Product handbook: R188 entry (overview / main components / physicochemical properties / product advantages / scope of application / addition level / packaging / storage conditions); same-series comparison paragraph (R780, D3-A entries).
- Cross-verification of materials: excerpts for the same model entry are consistent across three materials—the handbook, the hyperdispersant series volume, and the content-edited version (single source family, cross-verified across three volumes).
Not covered by the source material (not written on this page — to be added later)
- The overview sentence 'coating viscosity that can be obtained' is as in the original materials (the sentence is suspected to have missing characters)—transcribed verbatim, not revised.
- Prohibited items, usage precautions: not listed in this model's entry.
- Shelf life, compliance certification statements, safe handling data (MSDS level): not recorded in the existing materials.
- Specialized experiments and scenario-specific dosage gradations: not provided in the materials.
R188 is listed as a discontinued grade; the documentation is retained. This page is compiled from historical source material and is not a recommendation of a currently supplied product; please base your selection on current production grades and the latest documentation.