RHEOBYK -410
A liquid rheology additive for solvent-borne and solvent-free systems, also suitable for PVC plastisols and natural curing resin systems. A high thixotropic effect can be developed and thus increased anti-settling and anti-sag properties. Can be added later.
Chemistry Composition
Modified urea solution
Typical Materialized data
The data given on this data page are only typical values, not the technical indicators of the product.
| Active ingredients | 52% |
| Density (20 °C) | 1.13 g/ml |
| solvent | N-Methylpyrrolidone |
| Flashpoint | 91 °C |
Storage and Shipping
Moisture sensitive, store dry. Slight turbidity during storage does not affect the rheological effect.
Apply Information
paint Industry
Features and advantages: After mixing into the coating system, the additive will build a three-dimensional structure. The resulting thixotropic flow prevents settling and improves sag resistance without compromising leveling.
Recommended Dosage
0.2-1% of total formula (as supplied) can resist settling.
0.5-2% of the total formula (as supplied) is used for anti-sagging, Affected by the polarity and solid content of the system.
The above data is the empirical dosage, and the optimal dosage needs to be determined through a series of experiments.
join Methods and Processing Instructions
Cut properly, add while stirring, as soon as possible.Disperse evenly. No special temperature control is required. It can be added after the grinding stage or letdown stage to adjust the viscosity. If the product is compatible with the system, the rheological effect can be assessed 2 to 4 hours after addition, depending on the polarity. Recommended for medium polar systems. BYK-411 is suitable for non-polar systems, BYK-420 is suitable for highly polar and aqueous systems.
special Note
The use of drier may cause discoloration due to the formation of metal complexes, rheological properties Need to test. No yellowing will occur at the standard dosage. When the amount added is too high, attention should be paid to yellowing. When used in reaction systems, catalytic systems and nitrocellulose systems, we recommend testing storage stability.
PVC Plastisol
Features and advantages: It can be used in PVC plastisol to improve thixotropy. Improves anti-settling and anti-sagging performance, and improves processing efficiency. RHEOBYK-410 reduces the floating and blooming tendency of colored plastisols. There will be a foam stabilization effect.
Recommended Dosage
0.1-0.5phr of PVC resin (as supplied) can resist settling and floating color .
0.3-1 phr of PVC resin (as supplied) for anti-sag.
Up to 3phr can be added.
The above data is the empirical dosage, and the optimal dosage needs to be determined through a series of experiments.
join Methods and Processing Instructions
Can be post-added to PVC plastisol, add slowly while stirring. Depending on the formulation, thixotropic structures can start to form after up to 4 hours. But then the structure can be rebuilt in an instant.
Natural Curing resin system
Features and advantages: very suitable for anti-settling of casting and reactive resin systems, such as Epoxy, polyurethane and acrylic resins, and some polyester resin systems. It can improve the anti-sag without affecting the leveling property. Usually RHEOBYK-410 only increases the viscosity at high shear rates, so it does not affect the workability at high shear rates. This is due to the formation of a three-dimensional network structure, the time of which varies depending on the system, and the thixotropy exhibited improves the defoaming performance.
Recommended Dosage
0.2-1% of total formula (as supplied) can resist settling.
0.5-2% of total formula (as supplied) is used to improve sag resistance .
The above data is the empirical dosage, and the optimal dosage needs to be determined through a series of experiments.
join Methods and Processing Instructions
Cut properly, add while stirring, and disperse evenly as soon as possible. No special temperature control is required. It can be added after the grinding stage or after the letdown stage.
special Note
Using with metal catalysts may cause discoloration or delay curing.
serif">Appropriate shearing, add while stirring, and disperse evenly as soon as possible. No special control of temperature is required. It can be added after the grinding stage or paint mixing stage.
special Note
Using with metal catalysts may cause discoloration or delay curing.
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