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QK3340 Solventborne Dispersant
High molecular weight solventborne dispersant for carbon black jetness in coil, anti-corrosive and marine coatings.
Product Overview
QK3340 is a high molecular weight dispersing additive for solventborne coating systems, supplied at 44 to 46% active in PMA. It is a general-purpose workhorse: it lifts gloss and colour brilliance on organic pigments, resists flocculation, reduces fogging from uneven dispersion, and gives strong jetness and viscosity reduction on carbon black, including high-pigment carbon blacks.
Key Benefits
- Strong jetness and viscosity reduction on carbon black, including high-pigment grades
- Anti-flocculation performance that keeps colour consistent through storage
- Reduces fogging caused by uneven dispersion
- Shortens grind time and raises production throughput
- Broad resin compatibility across acrylic, short and medium oil alkyd and saturated polyester
At A Glance
- Chemistry
- High molecular weight dispersant in PMA
- Family
- Wetting and Dispersing
- Category
- Coating Additives
- Appearance reference
- Buff to brown liquid
Who It Is For
- Solventborne industrial coating formulators running deep colours
- Coil coating producers
- Marine and protective coating plants
Problems It Solves
- Poor blackness and grey undertone in solventborne blacks
- Flocculation showing up as colour drift after storage
- Mill base viscosity that limits pigment loading and stretches grind cycles
Application Scenarios
- Coil coatings
- Anti-corrosive coatings
- Marine coatings
- Alkyd drum and container paint
Technical Features
- Moderately polar extended chain with controlled molecular weight for broad versatility
- 44.0-46.0% active substance, solvent PMA
- Flash point above 47C
- Two-year shelf life in the unopened original container
Typical Data And Dosage
Typical values are indicative of the product and are not release specifications. Figures are reproduced from the manufacturer data sheet.
| Basis | 45% active substance, solvent PMA |
| Appearance | Buff to brown liquid |
| Active ingredient | 44.0-46.0% |
| Density (20C) | Approximately 0.98 g/ml |
| Flash point | Above 47C |
| Storage | Cool and dry |
| Shelf life | 2 years from production date, unopened |
| Packing | 25 kg / 200 kg |
Recommended Dosage
All dispersant and additive dosage figures below are quoted exactly as the source data sheet quotes them. Dispersant figures are percentages on pigment weight, not on the total batch. The published values are empirical, so confirm the optimum with a dosage ladder in your own system.
| Inorganic pigments | 1-3% |
| Organic pigments | 20-50% |
| Titanium dioxide and fillers | 1-3% |
| Carbon black | 30-80% |
Use Guide
- Below 5C the product can thicken or separate. Warm it to room temperature and mix evenly before use; product quality is not affected.
- Dosage figures are on pigment, so recalculate whenever pigment loading changes.
- Confirm compatibility first in short and medium oil alkyd and saturated polyester systems.
Quality Control On Your Side
- Rub-out test on every deep colour batch to catch flocculation
- Check jetness and undertone against a black reference panel
- Store mill base at 40C for four weeks and re-measure viscosity
How It Compares With The Alternatives
Technical comparison against other ways of solving the same problem. Nothing here is a performance claim against a named commercial product.
| QK3320 | QK3320 is a polyurethane type at 80% active for highly polar resin systems; QK3340 is the broader alkyd and acrylic workhorse. |
| QK3310 | QK3310 is 100% active and aimed at epoxy and UV; QK3340 is the solvented general-purpose grade. |
| Lecithin-type wetting agent | Polymeric anchoring holds carbon black and organic pigment where a simple wetting agent flocculates. |
Customisation And Supply
- Packing as published on this page; other pack sizes are confirmed per order
- Technical data sheet and, where available, safety data sheet supplied by email on request
- Tailor-made products can be discussed; send the property you need and the system it goes into
- Shipped from Tianjin, China by sea or air
QK3340 Solventborne Dispersant Questions
Which resin systems is QK3340 compatible with?
Which coatings is it recommended for?
What is the dosage for carbon black?
The drum has thickened in a cold store. Is it usable?
Products Often Considered Alongside This One
QK3320 Polyurethane Wetting and Dispersing Agent
80% active polyurethane dispersant for highly polar solventborne systems: automotive, motorcycle and coil coatings.
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QK3310 Solvent-Free Polymer Dispersant
100% active dispersant for epoxy and UV systems, with no risk of resin crosslinking and strong anti-float behaviour.
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QK4100 Liquid Rheological Agent
Liquid polyurea thixotrope for solventborne and solvent-free coatings, PVC plastisol and air-drying resin systems.
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Where It Is Used
Request QK3340 Solventborne Dispersant
Send your system type, pigment loading and required quantity. A quotation and the full data sheet come back by email.