Polycarboxylic acid type pigment dispersant"CARRYBON L-400"
What's great about Sanyo Chemical's polycarboxylic acid dispersant "CARRYBON L-400"
1
Excellent dispersibility of inorganic pigments in water
"CARRYBON L-400" has excellent dispersibility in water of various inorganic pigments such as calcium carbonate, clay, satin white, and aluminum hydroxide, and when used to disperse them, it produces a slurry with low viscosity.
2
Dispersant with good thermal stability
Pigment slurries using "CARRYBON L-400" as a dispersing agent have excellent viscosity stability when heated, so problems caused by thermal degradation during pumping and transportation rarely occur.
| Appearance | Brownish liquid |
|---|---|
|
pH |
Approx. 7.5 (50 mass% aqueous solution of this product) |
| Viscosity | Approx. 450 mPa (25℃、BL viscometer) |
| Active ingredient | Approx. 43 mass% (evaporation residue after drying at 130°C for 90 min) |
| Solubility | Dissolves in water |
Pigment dispersant "CARRYBON L-400" applications and uses
Use as a dispersing agent for dispersing various inorganic pigments (e.g., calcium carbonate, clay, satin white, aluminum hydroxide, etc.) in water.
Examples of uses
Pigment dispersants
Cement dispersant
Lime slurry dispersant
Amount used
The amount used depends on the type and particle size of the pigment and the concentration of the dispersion solution, but the standard amount is 0.01-3.0 mass percent (active ingredient) of the pigment.
Example of pigment dispersion method (wet dispersion)
Fig. Example of pigment slurry preparation method by wet dispersion (Photo is an image only)
Dispersion of fine pigments
When dispersing fine pigments in water, pigments can be added to an aqueous solution containing a predetermined amount of CARRYBON L-400 under agitation and dispersed in a dispersing machine to prepare a pigment slurry.
Dispersion of pigments with coarse particle diameter
When dispersing coarse pigments in water while wet milling, a pigment slurry can be prepared by adding a predetermined amount of CARRYBON L-400, water, and silica sand, and dispersing in a dispersing machine. The figure below shows an example of how to prepare a pigment slurry by wet milling.
Sanyo Chemical's pigment dispersants
performance of "CARRYBON L-400"
Viscosity reduction effect on pigment slurry
1
Viscosity reduction effect on slurries containing 70 mass% calcium carbonate
Relationship between the amount of dispersant added and slurry viscosity
(Slurry containing 70 mass% calcium carbonate)
2
Viscosity reduction effect on slurries containing 70 mass% clay
Relationship between the amount of dispersant added and slurry viscosity
(Slurry containing 70 mass% clay)
3
Viscosity reduction effect on slurry containing 25 mass% Satin White
Fig. Relationship between dispersant addition amount and slurry viscosity
(Slurry containing 25 mass% Satin White)
4
Viscosity reduction effect on slurries containing 70mass% aluminum hydroxide
Relationship between the amount of dispersant added and slurry viscosity
(Slurry containing 70 mass% aluminum hydroxide)
Test Method
Sample:
A sample was prepared by mixing the prescribed amount of inorganic pigment, dispersant, and water as shown in the above figure in a dispersing machine.
Measuring method:
The viscosity of the sample was measured at 25°C. The rotor and rotational speed of the viscometer are shown in the figure.
Viscosity stability of pigment slurry when heated
A slurry containing 20 mass% satin white :
Viscosity after heating
The temperature of the pigment slurry may rise when transporting by pump. Pigment slurries using inorganic phosphate dispersants, such as sodium hexametaphosphate, may increase in viscosity due to thermal degradation, which may affect pump transportation.
Pigment slurries using "CARRYBON L-400" as a dispersing agent have excellent viscosity stability when heated, so problems caused by thermal degradation during pumping and transportation rarely occur.
Test Method
Sample:
A sample was prepared by mixing the prescribed amount of inorganic pigment, dispersant, and water as shown in the above figure in a dispersing machine.
Measuring method:
The sample was allowed to stand at a predetermined temperature for 3 hours, and the viscosity was measured at 25°C. The rotor and rotational speed of the viscometer are shown in the figure. The rotor and rotational speed of the viscometer are shown in the figure.
Viscosity stability of pigment slurry over time
A slurry containing 20 mass% Satin White
Viscosity change over time
Pigment slurries using inorganic phosphate dispersants such as sodium hexametaphosphate can increase in viscosity over time, which can affect transportation and coating processes.
Pigment slurries using CARRYBON L-400 have excellent viscosity stability over time, so they rarely cause such problems.
Test Method
Sample:
Inorganic pigment, dispersant, and water as shown in the above figure were stirred in a dispersing machine to make a sample.
Measuring method:
The sample was kept at 25°C and the viscosity at 25°C was measured at intervals of a predetermined time. The rotor and rotational speed of the viscometer are shown in the figure.
Precautions for use
Before handling this product, be sure to read the "Safety Data Sheet" (SDS) for this product and its sub-materials (chemicals). Safety Data Sheets (SDS) for this product are available at our sales offices.
Related Information
Related products
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Acrylic polymers
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Link to Sanyo Chemical's corporate site
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