CLAYTONE-40

Claytone-40 is a powdered rheology additive based on an organophilic phyllosilicate, and Claytone-40 is used to generate thixotropic flow behavior, anti-settling performance, storage stability, and sag resistance in solvent-borne and solvent-free systems.
Claytone-40 is designed for non-polar to medium-polar systems, and Claytone-40 is used in coatings, inks, resin systems, powder coatings, adhesives, sealants, and specialty industrial formulations where low- and medium-shear rheology control is required.
Claytone-40 is typically supplied as a fine powder organoclay, and Claytone-40 performance depends on system polarity, dispersion quality, dosage, shear, activation efficiency, order of addition, resin compatibility, solvent blend, temperature, and processing time.

CAS Number: Mixture / organophilic phyllosilicate trade product
EC Number: Mixture / grade dependent
Molecular Formula: Organically modified natural phyllosilicate; variable
Molecular Weight: Inorganic-organic layered mineral mixture; not applicable as a single molecular compound

Synonyms: Claytone-40, Claytone 40, CLAYTONE-40, CLAYTONE 40, BYK Claytone-40, Organophilic Phyllosilicate, Organically Modified Phyllosilicate, Organoclay Rheology Additive, Modified Montmorillonite, Self-Activating Organoclay, Thixotropic Thickener, Anti-Settling Organoclay, Claytone-40, CLAYTONE-40, Claytone 40, CLAYTONE 40, Claytone40, CLAYTONE40, Claytone 40 Rheology Additive, CLAYTONE 40 Rheology Additive, Claytone-40 Rheology Additive, CLAYTONE-40 Rheology Additive, Claytone 40 Organoclay, CLAYTONE 40 Organoclay, Claytone-40 Organoclay, CLAYTONE-40 Organoclay, Claytone 40 Organophilic Clay, CLAYTONE 40 Organophilic Clay, Claytone-40 Organophilic Clay, CLAYTONE-40 Organophilic Clay, Claytone 40 Modified Bentonite, CLAYTONE 40 Modified Bentonite, Claytone-40 Modified Bentonite, CLAYTONE-40 Modified Bentonite, Claytone 40 Bentonite Additive, CLAYTONE 40 Bentonite Additive, Claytone-40 Bentonite Additive, CLAYTONE-40 Bentonite Additive, Claytone 40 Thixotropic Agent, CLAYTONE 40 Thixotropic Agent, Claytone-40 Thixotropic Agent, CLAYTONE-40 Thixotropic Agent, Claytone 40 Anti-Settling Agent, CLAYTONE 40 Anti-Settling Agent, Claytone-40 Anti-Settling Agent, CLAYTONE-40 Anti-Settling Agent, Claytone 40 Suspension Aid, CLAYTONE 40 Suspension Aid, Claytone-40 Suspension Aid, CLAYTONE-40 Suspension Aid, Claytone 40 Viscosity Modifier, CLAYTONE 40 Viscosity Modifier, Claytone-40 Viscosity Modifier, CLAYTONE-40 Viscosity Modifier, Claytone 40 Thickening Agent, CLAYTONE 40 Thickening Agent, Claytone-40 Thickening Agent

APPLICATIONS

Claytone-40 is used in solvent-borne coatings to build thixotropic structure and improve application stability.
Claytone-40 is incorporated into paints, enamels, primers, stains, and protective coatings where sag control and anti-settling behavior are required.
Claytone-40 is used in resin-based systems where controlled low-shear viscosity helps prevent pigment and filler settling.

Claytone-40 is used in non-polar to medium-polar coating systems as a rheological additive and thixotropic thickener.
Claytone-40 is incorporated into aliphatic and aliphatic/aromatic solvent systems where modified montmorillonite can develop flow control and anti-settling properties.
Claytone-40 is used in solventborne paints and inks where reproducible rheology and stable dispersion behavior are important.

Claytone-40 is used in printing inks to improve pigment suspension, viscosity control, and storage stability.
Claytone-40 is incorporated into gravure, screen, flexographic, and specialty ink systems where solvent compatibility and shear recovery are suitable.
Claytone-40 is used in ink systems where anti-settling, controlled flow, and reduced pigment flooding or floating are desired.

Claytone-40 is used in powder coatings to increase melt viscosity and improve flow behavior during application and curing.
Claytone-40 is incorporated into powder coating systems where sag resistance and film control are needed at elevated processing temperatures.
Claytone-40 can help reduce gloss at higher dosage levels, depending on formulation, processing, and film thickness.

Claytone-40 is used in adhesives, sealants, mastics, and specialty resin systems where thixotropy and anti-settling behavior are required.
Claytone-40 is incorporated into filled systems to support uniform distribution of pigments, extenders, fillers, and functional additives.
Claytone-40 is valued because Claytone-40 provides organoclay thickening, thixotropic flow, sag resistance, storage stability, and anti-settling performance in non-polar to medium-polar solvent-borne and solvent-free systems.

Claytone-40 is used as a rheology additive in non-polar to medium-polar coating systems.
Claytone-40 is used to generate thixotropic flow behavior in solvent-borne formulations.
Claytone-40 is used to increase low-shear viscosity while allowing easier flow under application shear.
Claytone-40 is used to improve the structural stability of liquid coating formulations.

Claytone-40 is used in industrial paints to prevent pigments and fillers from settling during storage.
Claytone-40 is used to improve the redispersibility of settled particles in properly formulated coatings.
Claytone-40 is used to reduce hard sediment formation at the bottom of paint containers.
Claytone-40 is used to maintain more uniform pigment distribution throughout product shelf life.

Claytone-40 is used in high-build coatings to improve sag resistance on vertical surfaces.
Claytone-40 is used to support the application of thicker wet films without excessive running.
Claytone-40 is used to improve edge coverage by controlling coating flow after application.
Claytone-40 is used to reduce curtain formation in vertically applied coating systems.

Claytone-40 is used in alkyd paints as a thixotropic thickener and anti-settling agent.
Claytone-40 is used to improve brush loading and application control in alkyd formulations.
Claytone-40 is used to reduce dripping from brushes and rollers during painting.
Claytone-40 is used to support more uniform film thickness in air-drying alkyd coatings.

Claytone-40 is used in epoxy coatings to control viscosity and stabilize heavy pigments.
Claytone-40 is used to reduce settling of anticorrosive pigments in epoxy primers.
Claytone-40 is used to improve sag resistance in high-build epoxy systems.
Claytone-40 is used to provide controlled flow in solvent-free and solvent-borne epoxy formulations.

Claytone-40 is used in polyurethane coatings to improve application rheology.
Claytone-40 is used to reduce pigment settlement in pigmented polyurethane finishes.
Claytone-40 is used to improve film-build control on complex or vertical substrates.
Claytone-40 is used to support consistent spray application in properly optimized systems.

Claytone-40 is used in anticorrosive primers to suspend zinc phosphate and other dense pigments.
Claytone-40 is used to maintain homogeneous distribution of protective pigments during storage.
Claytone-40 is used to improve the stability of high-pigment-volume coating formulations.
Claytone-40 is used to reduce viscosity separation between the upper and lower portions of stored primers.

Claytone-40 is used in marine coatings to provide anti-sag and anti-settling performance.
Claytone-40 is used to stabilize heavy fillers in protective coatings for ships and offshore structures.
Claytone-40 is used to support thick-film application on vertical and overhead surfaces.
Claytone-40 is used to improve storage stability of solvent-based marine coating systems.

Claytone-40 is used in automotive and transportation coatings to control flow and film build.
Claytone-40 is used to prevent settling in primers, underbody coatings, and protective finishes.
Claytone-40 is used to improve application control in coatings applied to inclined surfaces.
Claytone-40 is used to reduce sagging in formulations with relatively slow solvent evaporation.

Claytone-40 is used in printing inks to improve rheological control and pigment suspension.
Claytone-40 is used to reduce settling of dense pigments in solvent-based ink systems.
Claytone-40 is used to improve ink transfer by providing shear-thinning behavior.
Claytone-40 is used to support stable viscosity during storage and printing operations.

Claytone-40 is used in adhesives and sealants to control flow and prevent filler settling.
Claytone-40 is used to improve non-sag behavior in cartridge-applied products.
Claytone-40 is used to stabilize mineral fillers in solvent-based adhesive systems.
Claytone-40 is used to support clean bead formation during sealant extrusion.

Claytone-40 is used in powder coatings to increase melt viscosity during curing.
Claytone-40 is used to improve flow control in thermosetting powder coating systems.
Claytone-40 is used at higher addition levels to reduce gloss in selected powder coatings.
Claytone-40 is used to support surface-texture development in specially formulated powder finishes.

Claytone-40 is used in product development to optimize sag resistance, anti-settling performance, and application viscosity.
Claytone-40 is used in quality control to evaluate rheology, dispersion quality, and storage stability.

Claytone-40 provides anti-settling properties by maintaining particles within a structured liquid network.
Claytone-40 provides sag resistance by increasing viscosity when an applied coating is at rest.
Claytone-40 improves storage stability by reducing pigment and filler movement over time.
Claytone-40 provides thixotropic recovery after mixing, pumping, brushing, rolling, or spraying.

Claytone-40 is suitable for solvent-borne and selected solvent-free resin systems.
Claytone-40 is particularly useful where conventional liquid thickeners do not provide sufficient particle suspension.
Claytone-40 can influence gloss, leveling, and surface appearance depending on dosage and dispersion quality.
Claytone-40 can reduce gloss when used at relatively high addition levels in selected formulations.

Claytone-40 dosage should be optimized to balance viscosity, leveling, sag resistance, and anti-settling performance.
Claytone-40 may cause excessive viscosity or reduced flow if used above the appropriate concentration.
Claytone-40 should be evaluated for compatibility with resins, solvents, dispersants, and other rheological additives.
Claytone-40 should be stored in tightly closed packaging under cool and dry conditions to avoid moisture contamination.

Claytone-40 is valued for self-activating performance, effective thixotropy, reliable suspension, and broad industrial versatility.

DESCRIPTION

Claytone-40 is part of the Claytone family of rheology additives described by BYK as organically modified natural phyllosilicates for solvent-borne and solvent-free systems.
Claytone-40 is described as an organophilic phyllosilicate powder suitable for non-polar to medium-polar systems, where it generates thixotropic flow behavior.
Claytone-40 works by forming a three-dimensional organoclay network in compatible organic systems, helping the formulation resist settling at rest while still flowing under shear.

Claytone-40 is easy to disperse and self-activating according to technical product descriptions, which can simplify processing compared with organoclays that require separate polar activators.
Claytone-40 is mainly effective in the low- and mid-shear range, making Claytone-40 useful for storage stability, anti-settling control, sag resistance, and viscosity recovery.
Claytone-40 should still be dispersed with adequate shear because incomplete wetting or poor delamination can reduce thickening efficiency and cause specks, poor gloss, or inconsistent rheology.

Claytone-40 should be evaluated in the complete formulation because resin polarity, solvent blend, pigment loading, filler type, dispersant package, temperature, and order of addition can strongly affect final viscosity and gel strength.
Claytone-40 should be protected from moisture, contamination, and poor storage because powder flow and dispersion behavior can be affected by unsuitable handling.
Claytone-40 should be used according to supplier recommendations, coating formulation requirements, workplace safety standards, and final application performance targets.

Claytone-40 is a powdered rheology additive based on an organophilic phyllosilicate.
Claytone-40 is designed primarily for non-polar to medium-polar formulation systems.
Claytone-40 is an organically modified natural clay used to generate thixotropic structure.
Claytone-40 is classified as an organoclay thickener and suspension stabilizer.

Claytone-40 is supplied as a fine powder for incorporation into coatings, inks, adhesives, and related products.
Claytone-40 forms a three-dimensional structure when properly dispersed in a compatible liquid medium.
Claytone-40 increases viscosity most effectively in the low- and medium-shear regions.
Claytone-40 allows viscosity to decrease under shear and recover when the shear force is removed.

Claytone-40 is described as an easy-to-disperse and self-activating rheological additive.
Claytone-40 can often be incorporated without a separate chemical activator in compatible formulations.
Claytone-40 requires sufficient mechanical dispersion to develop its full rheological performance.
Claytone-40 performance depends on solvent polarity, resin chemistry, dispersion energy, and addition level.

PROPERTIES

Common Name: Claytone-40
Chemical Type: Organophilic phyllosilicate; modified montmorillonite; organoclay rheology additive; thixotropic thickener
Appearance: Fine off-white to light beige powder, grade dependent
Odor: Mild characteristic odor or nearly odorless
Function: Rheology modifier, thixotropic thickener, anti-settling agent, sag-control additive, suspension stabilizer
Application Range: Non-polar to medium-polar systems
Physical Form: Powder
Solubility: Insoluble in water and solvents; dispersible and swellable in compatible organic systems
Activation Behavior: Self-activating grade
Shear Response: Builds thixotropic flow behavior and low- to medium-shear structure
Compatibility: Solvent-borne coatings, inks, resin systems, powder coatings, adhesives, sealants, and solvent-free systems, formulation dependent
Rheology Effect: Improves anti-settling, storage stability, sag resistance, and flow control
Gloss Effect: May reduce gloss at higher dosage levels in selected powder coating or coating systems
Moisture Sensitivity: Powder handling and dispersion may be affected by moisture exposure
Stability: Stable under recommended dry storage; protect from moisture, contamination, and excessive heat
Storage Temperature: 15–30°C, tightly closed, dry, well-ventilated
Shelf Life: Typically 24–60 months in original sealed packaging, supplier dependent

FIRST AID

Inhalation:
Move to fresh air if powder dust is inhaled.
Seek medical attention if coughing, respiratory irritation, or breathing discomfort persists.
Avoid breathing dust during weighing, charging, blending, and powder transfer operations.

Skin Contact:
Wash skin with soap and water after contact.
Remove contaminated clothing if necessary and wash before reuse.
Seek medical advice if irritation, redness, dryness, or prolonged discomfort develops.

Eye Contact:
Rinse cautiously with water for several minutes.
Remove contact lenses if present and easy to do, then continue rinsing.
Seek medical attention if irritation, redness, or foreign-body sensation persists.

Ingestion:
Rinse mouth with water.
Do not induce vomiting.
Seek medical attention if discomfort occurs or if a significant amount is swallowed.
Never give anything by mouth to an unconscious person.

Note to Physicians:
Treat symptomatically.
Monitor for mechanical irritation from mineral powder dust and possible irritation from organic treatment components.
Provide supportive care as needed.

HANDLING AND STORAGE

Handling:
Use appropriate PPE including gloves, safety glasses, protective clothing, and dust protection where bulk powder exposure may occur.
Avoid generating dust during bag opening, transfer, weighing, charging, mixing, and packaging operations.
Use clean, dry equipment and controlled addition procedures to maintain consistent dispersion and rheology performance.

Ventilation:
Use general ventilation for normal handling.
Use local exhaust ventilation where dust may be generated during powder processing.
Avoid inhalation exposure during bulk transfer, high-speed mixing, and charging into solvent or resin systems.

Storage:
Store in tightly closed bags or containers in a cool, dry, well-ventilated area.
Protect from moisture, direct sunlight, contamination, excessive heat, and physical compaction.
Keep away from strong oxidizers, strong acids, strong bases, and incompatible reactive chemicals.

Spill and Leak Procedures:
Avoid dust generation and restrict access to trained personnel.
Collect spilled powder using vacuum or careful sweeping methods.
Dispose of waste according to local regulations and prevent release to drains, soil, and waterways.

Handling Precautions:
Optimize dispersion because Claytone-40 thickening efficiency, anti-settling performance, and thixotropic recovery depend strongly on wetting, shear, and processing sequence.
Confirm system polarity because Claytone-40 is designed for non-polar to medium-polar systems and may perform differently in highly polar or aqueous systems.
Rotate stock using FIFO practices to maintain consistent powder flow, moisture level, dispersion behavior, and rheological performance.