CLAYTONE-40

Claytone-40 is a powder-form rheology additive based on an organophilic phyllosilicate for non-polar to medium-polar systems.

Claytone-40 generates thixotropic and shear-thinning flow while improving sag resistance, suspension stability, and resistance to pigment or filler settling.

Claytone-40 is used in solvent-borne coatings, powder coatings, thermoset resins, polishes, non-polar cleaners, greases, lubricants, and corrosion-protection oils.

CAS Number: 1302-78-9 as a representative bentonite identifier; the complete organically modified composition may contain additional components

EC Number: 215-108-5 as a representative bentonite identifier

Molecular Formula: Not applicable to a variable organically modified phyllosilicate composition

Molecular Weight: Not applicable to a variable organically modified phyllosilicate composition

SYNONYMS

Claytone-40, Claytone 40, CLAYTONE-40, CLAYTONE 40, Claytone40, Organophilic Phyllosilicate, Organophilic Bentonite, Organically Modified Bentonite, Organically Modified Phyllosilicate, Organically Modified Natural Phyllosilicate, Modified Bentonite Clay, Modified Montmorillonite, Organophilic Montmorillonite, Quaternium-18 Bentonite, Quaternary-Ammonium-Modified Bentonite, Quaternary-Ammonium-Modified Montmorillonite, Bis(Hydrogenated Tallow Alkyl) Dimethylammonium Complex with Sodium Bentonite, Hydrophobic Bentonite, Oil-Dispersible Bentonite, Oil-Compatible Bentonite, Solvent-Dispersible Organoclay, Organoclay Rheology Additive, Organoclay Thickener, Organoclay Thixotrope, Organoclay Suspension Stabilizer, Non-Aqueous Rheology Modifier, Solvent-Borne Rheology Modifier, Low-Polarity Rheology Additive, Medium-Polarity Rheology Additive, Thixotropic Thickener, Thixotropic Rheology Modifier, Shear-Thinning Additive, Anti-Sagging Additive, Anti-Settling Additive, Storage-Stability Additive, Pigment Suspension Agent, Filler Suspension Agent, Powder-Coating Rheology Additive, Thermoset Rheology Additive, Unsaturated-Polyester Thixotrope, Oil-System Thickener, Water-in-Oil Emulsion Stabilizer, Polish Rheology Modifier, Grease Thickener, Lubricant Thickener, Dry-Lubricant Suspension Agent, Corrosion-Protection-Oil Rheology Modifier, Bentoquatam, Organoclay, Bentonite CAS 1302-78-9, EC 215-108-5, UNII 7F465U79Q1

APPLICATIONS

Claytone-40 serves as a thixotropic rheology additive in solvent-borne architectural coatings formulated with non-polar to medium-polar vehicles.
Claytone-40 improves sag resistance on vertical surfaces while maintaining sufficient leveling for a uniform dried film.

Claytone-40 supports industrial coatings containing pigments, fillers, resins, solvents, and functional additives with different densities.
Claytone-40 helps prevent pigment and filler sedimentation during storage, transportation, and repeated container opening.

Claytone-40 contributes to protective coatings that require high film build without uncontrolled downward movement.
Claytone-40 enables protective coatings to retain more material on edges, welds, corners, and inclined metal surfaces.

Claytone-40 functions in wood stains, varnishes, and furniture coatings based on compatible solvent-borne resin systems.
Claytone-40 reduces settling of pigments and matting agents while supporting controlled penetration and application.

Claytone-40 supports coil coatings requiring stable viscosity during pumping, circulation, coating, and oven processing.
Claytone-40 helps maintain uniform pigment distribution throughout extended production runs.

Claytone-40 contributes to printing inks containing pigments, fillers, resins, and low- to medium-polar liquid carriers.
Claytone-40 improves storage stability and reduces hard settling without eliminating the flow required during printing.

Claytone-40 functions in millbases and pigment concentrates prepared before dilution into finished coatings or inks.
Claytone-40 helps stabilize concentrated solids while high-shear dispersion separates organoclay and pigment agglomerates.

Claytone-40 serves as a melt-rheology modifier in thermosetting powder coatings.
Claytone-40 increases melt viscosity during extrusion and crosslinking, allowing the surface structure to be adjusted.

Claytone-40 supports epoxy powder coatings requiring controlled flow and improved coverage of edges or complex shapes.
Claytone-40 helps limit excessive melt movement away from exposed edges during curing.

Claytone-40 contributes to polyester, polyurethane, acrylate, and polyester-epoxy hybrid powder coatings.
Claytone-40 enables formulators to adjust surface texture, gloss, melt flow, and edge coverage through dosage optimization.

Claytone-40 functions in fine-texture powder coatings intended to develop a controlled and reproducible surface profile.
Claytone-40 can reduce gloss at higher addition levels while producing a finer structured appearance.

Claytone-40 improves powder-coating edge coverage by increasing melt viscosity during the curing reaction.
Claytone-40 can support corrosion protection by reducing insufficient film thickness along vulnerable edges.

Claytone-40 serves as a rheology additive in putties based on unsaturated polyester resins.
Claytone-40 develops strong thixotropy while reducing filler separation and improving application consistency.

Claytone-40 supports unsaturated-polyester laminating resins containing mineral fillers or functional powders.
Claytone-40 helps maintain a stable rheology profile even when processing or service temperatures increase.

Claytone-40 can be prepared as a concentrated pregel in styrene for later addition to unsaturated-polyester resin systems.
Claytone-40 pregels can improve dosing and dispersion when the concentration and processing sequence are correctly controlled.

Claytone-40 contributes to furniture polishes based on mineral oils, isoparaffins, hydrocarbon solvents, or silicone oils.
Claytone-40 improves application behavior while preventing abrasive or polishing particles from settling rapidly.

Claytone-40 supports automotive polishes containing waxes, oils, silicones, solvents, abrasives, and surface-care additives.
Claytone-40 provides a stable thixotropic consistency that allows easy spreading and reduced storage separation.

Claytone-40 functions in non-polar industrial cleaners that require thickening and controlled surface contact.
Claytone-40 helps the cleaner remain on vertical or inclined surfaces while allowing easier movement during wiping or agitation.

Claytone-40 contributes to water-in-oil emulsions used in cleaning, polishing, and surface-care formulations.
Claytone-40 stabilizes the oil-continuous structure when Claytone-40 is activated and incorporated into the oil phase.

Claytone-40 supports formulations based on mineral oils, isoparaffins, mineral spirits, and compatible silicone oils.
Claytone-40 requires suitable high-shear processing and a polar activator to achieve optimum gelling in many low-polarity systems.

Claytone-40 serves as a thickener for lubricating greases based on mineral and naphthenic oils.
Claytone-40 provides consistent thickening before and after mechanical stress while helping reduce oil separation.

Claytone-40 supports greases based on polyalphaolefins, ester oils, and vegetable oils after polarity and activation have been optimized.
Claytone-40 allows grease consistency to be adjusted through organoclay level, activator level, base-oil type, and homogenization conditions.

Claytone-40 contributes to high-temperature greases that require persistent inorganic thickening.
Claytone-40 can produce greases without a conventional drop point while retaining thickening performance at elevated temperatures.

Claytone-40 functions in lubricants containing graphite, polytetrafluoroethylene, or other dry lubricating particles.
Claytone-40 generates thixotropic structure that stabilizes dense solids and reduces sedimentation during storage.

Claytone-40 supports corrosion-protection oils that must resist running, sagging, or drainage from treated surfaces.
Claytone-40 helps the protective oil remain in place while retaining sufficient shear-thinning behavior for pumping, spraying, or brushing.

DESCRIPTION

Claytone-40 is an organophilic phyllosilicate derived from a naturally occurring layered clay mineral.
Claytone-40 contains an organically modified mineral structure rather than one uniform low-molecular-weight substance.

Claytone-40 is commonly associated with Quaternium-18 Bentonite and quaternary-ammonium-modified montmorillonite terminology.
Claytone-40 may be described as a complex of hydrogenated-tallow-derived dimethylammonium species with bentonite.

Claytone-40 has no single fixed molecular formula because the mineral composition, exchangeable ions, and organic modification form a variable distribution.
Claytone-40 has no meaningful single molecular weight for the complete commercial composition.

Claytone-40 is supplied as a free-flowing powder with a typical loose bulk density of approximately 320–413 kg/m³.
Claytone-40 particle appearance can range from off-white to light tan depending on mineral origin, organic modification, and production history.

Claytone-40 gains oil compatibility through replacement of naturally hydrophilic exchangeable ions with lipophilic organic cations.
Claytone-40 modification allows the layered mineral particles to swell and disperse in compatible nonaqueous liquids.

Claytone-40 develops rheology after agglomerates separate and individual mineral platelets become distributed throughout the liquid phase.
Claytone-40 forms a weak three-dimensional network through interactions among dispersed organophilic platelets.

Claytone-40 provides thixotropic behavior because the internal platelet network weakens under mechanical shear.
Claytone-40 rebuilds the network after shear is reduced, increasing viscosity and suspension stability at rest.

Claytone-40 performs primarily in non-polar to medium-polar liquid systems.
Claytone-40 efficiency depends on solvent polarity, resin chemistry, oil type, water content, activator selection, and processing energy.

Claytone-40 should normally be dispersed at high shear to obtain complete platelet separation and maximum rheological efficiency.
Claytone-40 can be incorporated directly into a millbase or introduced through a separately prepared concentrated paste.

Claytone-40 may require a polar activator such as propylene carbonate, aqueous alcohol, or another suitable polar component.
Claytone-40 activator requirement and optimum dosage depend on the polarity and composition of the surrounding formulation.

Claytone-40 can be incorporated as a pregel or activated directly in the final solvent or oil phase.
Claytone-40 normally benefits from activation before surfactants and emulsifiers are added because premature surfactant addition can reduce structure development.

Claytone-40 should be incorporated into the oil phase when Claytone-40 is used to stabilize a water-in-oil emulsion.
Claytone-40 performance should be confirmed through viscosity, thixotropic recovery, anti-settling, sag-resistance, and storage-stability testing.

Claytone-40 remains stable for up to 60 months in unopened packaging when stored under the documented conditions.
Claytone-40 should be transported and stored dry in closed packaging within the documented temperature range of approximately −50°C to +50°C.

PROPERTIES

Name: Claytone-40

Chemical Description: Organophilic Phyllosilicate

Chemical Family: Organically Modified Bentonite and Phyllosilicates

Associated Generic Identity: Quaternium-18 Bentonite

Material Type: Modified Natural Layered Silicate

CAS Number: 1302-78-9 as a Representative Bentonite Identifier

EC Number: 215-108-5 as a Representative Bentonite Identifier

UNII: 7F465U79Q1 for the Associated Bentoquatam Identity

Molecular Formula: Not Applicable

Molecular Weight: Not Applicable

Physical Form: Powder

Appearance: Off-White to Light-Tan Powder, Grade and Batch Dependent

Typical Loose Bulk Density: 320–413 kg/m³

Primary Function: Rheology Modification

Secondary Functions: Thickening, Thixotropy, Anti-Settling, Sag Control, Suspension Stabilization, and Storage-Stability Improvement

Target Polarity: Non-Polar to Medium-Polar Systems

Rheological Behavior: Thixotropic

Flow under Shear: Shear-Thinning

Structure at Rest: Rebuildable Platelet Network

Main Effective Shear Range: Low and Medium Shear

Leveling: Good when the Addition Level is Properly Optimized

Anti-Sagging Performance: Significant Improvement in Compatible Systems

Pigment Suspension: Improved

Filler Suspension: Improved

Water Solubility: Insoluble

Oil Behavior: Dispersible and Swellable in Compatible Organic Media after Proper Activation

Activation Requirement: Polar Activation Required for Optimum Performance in Many Low-Polarity Systems

Representative Activators: Propylene Carbonate, Propylene Carbonate-Water, Ethanol-Water, and Methanol-Water

Initial Activator Level for Grease Development: Approximately 20% Based on Claytone-40

Representative Propylene Carbonate-Water Level for Cleaning Systems: 25–40% Based on Claytone-40

Representative Ethanol-Water Level for Cleaning Systems: 40–60% Based on Claytone-40

Representative Methanol-Water Level for Cleaning Systems: 25–40% Based on Claytone-40

Recommended Coating Level: 0.3–2% Based on the Total Formulation

Recommended Powder-Coating Level: 0.5–4% Based on the Total Formulation

Recommended Thermoset Level: 0.2–2% Based on the Total Formulation

Recommended Polish and Cleaner Level: 0.5–3% Based on the Total Formulation

Recommended Lubricant Level: 1–4% Based on the Total Formulation

Representative NLGI 2 Grease Level in Mineral and Naphthenic Oils: 6–8%

Representative NLGI 2 Grease Level in Polyalphaolefin, Ester, and Vegetable Oils: 8–12%

Recommended Millbase Dispersion: High Shear for at Least 10 Minutes

Representative Pregel Concentration for General Incorporation: Approximately 10%

Representative Styrene Pregel Concentration: 4–6%

Compatible Coating Systems: Architectural, Industrial, Protective, Wood, Furniture, Coil, and Printing-Ink Systems

Compatible Powder-Coating Resins: Epoxy, Polyester, Polyurethane, Acrylate, and Polyester-Epoxy Hybrids

Compatible Thermoset Systems: Unsaturated-Polyester Putties and Laminating Resins

Compatible Cleaning Media: Mineral Oils, Isoparaffins, Mineral Spirits, and Silicone Oils

Compatible Base Oils: API Group I–III Mineral Oils, Polyalphaolefins, White Oils, Naphthenic Oils, Selected Ester Oils, and Vegetable Oils

Dry-Lubricant Compatibility: Suitable for Stabilizing Graphite and PTFE in Compatible Oil Systems

Conventional Grease Drop Point: Organoclay-Thickened Greases May Not Display a Conventional Drop Point

Temperature Stability: Thickening Can Be Retained at Elevated Use Temperatures

Volatility: Low under Normal Conditions

Dust Formation: Possible during Powder Handling

Combustibility: Organic Modification May Decompose under Severe Fire Conditions

Chemical Stability: Stable under Recommended Storage Conditions

Storage Temperature: Approximately −50°C to +50°C in Closed Dry Packaging

Shelf Life: 60 Months in Unopened Packaging under Documented Storage Conditions

The numerical addition levels, bulk density, processing conditions, activator guidance, storage range, and shelf life are typical technical values rather than universal specification limits.

FIRST AID

Inhalation: Move the person exposed to Claytone-40 dust into fresh air and keep the person comfortable.
Obtain medical attention if Claytone-40 exposure causes persistent coughing, throat irritation, wheezing, or breathing difficulty.

Skin Contact: Remove clothing contaminated with Claytone-40 and wash the affected skin thoroughly with soap and water.
Obtain medical advice if Claytone-40 causes persistent dryness, redness, itching, or irritation.

Eye Contact: Rinse eyes exposed to Claytone-40 immediately with clean running water for at least 15 minutes.
Remove contact lenses when easy to do and obtain medical attention if Claytone-40 causes continuing pain, redness, or visual discomfort.

Ingestion: Rinse the mouth thoroughly after accidental ingestion of Claytone-40 and do not induce vomiting unless instructed by medical personnel.
Obtain medical advice after substantial Claytone-40 ingestion or whenever nausea, abdominal discomfort, or other symptoms develop.

Note to Physicians: Treat Claytone-40 exposure symptomatically and provide supportive care.
Review the current regional Safety Data Sheet to assess Claytone-40 composition, dust exposure, accompanying ingredients, and required medical measures.

HANDLING AND STORAGE

Handling: Handle Claytone-40 according to good industrial hygiene and dry-powder processing practices.
Avoid generating Claytone-40 dust and prevent unnecessary contact with the eyes, skin, clothing, and breathing zone.

Ventilation: Provide effective general ventilation and local exhaust wherever Claytone-40 is weighed, transferred, charged, sieved, or dispersed.
Use suitable respiratory protection when engineering controls cannot adequately control airborne Claytone-40 dust.

Storage: Store Claytone-40 in tightly closed and moisture-resistant packaging within a dry storage area.
Protect Claytone-40 from water, humidity, contamination, damaged packaging, and temperatures outside the documented storage range.

Spill and Leak Procedures: Avoid raising Claytone-40 dust and collect Claytone-40 with a suitable low-dust vacuum or mechanical method.
Place recovered Claytone-40 in labeled containers and prevent Claytone-40 from entering drains or uncontrolled waste streams.

Handling Precautions: Wear suitable protective gloves, tightly fitting safety glasses, protective clothing, and respiratory protection when required.
Review the current grade-specific Safety Data Sheet before commercial Claytone-40 storage, processing, transportation, or disposal.