Products in Fillers & Extenders

Portaflame® SG 40 is produced from carefully selected synthetic aluminum hydroxide (ATH). The standardized quality of Portaflame® SG is guaranteed by means of an ISO 9001-certified quality management plan. The chemical composition of the raw material and the finished product is closely monitored, and the particle size is kept within a narrow variation.

Minex® ST 4 A150-10 is a functional filler that is produced from nepheline syenite, a naturally occurring, silica-deficient sodium-potassium alumina silicate. Automated scanning electron microscopy confirms that Minex® ST grades contain less than one-tenth of one percent crystalline silica. No free crystalline silica is detectable in the mineral complex. All Minex® ST grades are processed and sized with rigid adherence to Covia’s QIPSM quality assurance programs.

Portaflame® SG 10 is produced from carefully selected synthetic aluminum hydroxide (ATH). The standardized quality of Portaflame® SG is guaranteed by means of an ISO 9001-certified quality management plan. The chemical composition of the raw material and the finished product is closely monitored, and the particle size is kept within a narrow variation.

SNOBRITE® 60 is a white extender pigment that is produced from air-floated intermediate kaolins. With a plate-like crystal structure and high aspect ratio, SNOBRITE® provides good reinforcing properties, increased hardness and stiffness, and improved resistance to abrasion and tear. Its tendency to slowly build viscosity makes SNOBRITE® a cost-effective formulating tool to enhance performance without adversely affecting production rates. Its additions also improve critical working properties, including extrusion, calendaring, mold release, and handling.

Portaflame® SG 20 is produced from carefully selected synthetic aluminum hydroxide (ATH). The standardized quality of Portaflame® SG is guaranteed by means of an ISO 9001-certified quality management plan. The chemical composition of the raw material and the finished product is closely monitored, and the particle size is kept within a narrow variation.

Minex® ST 4 A100-10 is a functional filler that is produced from nepheline syenite, a naturally occurring, silica-deficient sodium-potassium alumina silicate. Automated scanning electron microscopy confirms that Minex® ST grades contain less than one-tenth of one percent crystalline silica. No free crystalline silica is detectable in the mineral complex. All Minex® ST grades are processed and sized with rigid adherence to Covia’s QIPSM quality assurance programs.

SNOBRITE® 75HB is a white extender pigment that is produced from air-floated intermediate kaolins. With a plate-like crystal structure and high aspect ratio, SNOBRITE® provides good reinforcing properties, increased hardness and stiffness, and improved resistance to abrasion and tear. Its tendency to slowly build viscosity makes SNOBRITE® a cost-effective formulating tool to enhance performance without adversely affecting production rates. Its additions also improve critical working properties, including extrusion, calendaring, mold release, and handling.

SNOBRITE® 68 is a white extender pigment that is produced from air-floated intermediate kaolins. With a plate-like crystal structure and high aspect ratio, SNOBRITE® provides good reinforcing properties, increased hardness and stiffness, and improved resistance to abrasion and tear. Its tendency to slowly build viscosity makes SNOBRITE® a cost-effective formulating tool to enhance performance without adversely affecting production rates. Its additions also improve critical working properties, including extrusion, calendaring, mold release, and handling.

Minex® EP-315 belongs to the Minex® range of functional fillers and extenders, which are proven performance enhancers in a broad range of paints, coatings, adhesives, sealants, and inks. With its use, excellent brightness, tint retention, and weatherability can be achieved in exterior paints. In interior paint formulations, it improves color, sheen uniformity, chemical and stain resistance, and durability. This product is easily dispersed in all conventional vehicle systems. Its low oil absorption permits high loadings in adhesives, sealants, and aqueous- and alkyd-based paints.

Portaflame® SG 35 is produced from carefully selected synthetic aluminum hydroxide (ATH). The standardized quality of Portaflame® SG is guaranteed by means of an ISO 9001-certified quality management plan. The chemical composition of the raw material and the finished product is closely monitored, and the particle size is kept within a narrow variation.

Portaflame® SG 25 is produced from carefully selected synthetic aluminum hydroxide (ATH). The standardized quality of Portaflame® SG is guaranteed by means of an ISO 9001-certified quality management plan. The chemical composition of the raw material and the finished product is closely monitored, and the particle size is kept within a narrow variation.

SNOBRITE® SP is a white extender pigment that is produced from air-floated intermediate kaolins. With a plate-like crystal structure and high aspect ratio, SNOBRITE® provides good reinforcing properties, increased hardness and stiffness, and improved resistance to abrasion and tear. Its tendency to slowly build viscosity makes SNOBRITE® a cost-effective formulating tool to enhance performance without adversely affecting production rates. Its additions also improve critical working properties, including extrusion, calendaring, mold release, and handling.

Minex® ST 4 A200-10 is a functional filler that is produced from nepheline syenite, a naturally occurring, silica-deficient sodium-potassium alumina silicate. Automated scanning electron microscopy confirms that Minex® ST grades contain less than one-tenth of one percent crystalline silica. No free crystalline silica is detectable in the mineral complex. All Minex® ST grades are processed and sized with rigid adherence to Covia’s QIPSM quality assurance programs.

SNOBRITE® 75 is a white extender pigment that is produced from air-floated intermediate kaolins. With a plate-like crystal structure and high aspect ratio, SNOBRITE® provides good reinforcing properties, increased hardness and stiffness, and improved resistance to abrasion and tear. Its tendency to slowly build viscosity makes SNOBRITE® a cost-effective formulating tool to enhance performance without adversely affecting production rates. Its additions also improve critical working properties, including extrusion, calendaring, mold release, and handling.

AGC Chemicals Americas, Inc. RESIFA™ SOLESPHERE™ NP-100 is a non-porous, heat-treated silica particle. Belonging to the NP-series, it has a very high hardness, so it is often used as a filler for increasing resin hardness. The high refractiveness of these grades offers good transparency when added to resins and films. It is also used for anti-blocking in film applications. The NP-series has excellent heat resistance and is very dimensionally stable at various temperature ranges.

AGC Chemicals Americas, Inc. RESIFA™ SOLESPHERE™ NP-200 is a non-porous, heat-treated silica particle. Belonging to the NP-series, it has a very high hardness, so it is often used as a filler for increasing resin hardness. The high refractiveness of these grades offers good transparency when added to resins and films. It is also used for anti-blocking in film applications. The NP-series has excellent heat resistance and is very dimensionally stable at various temperature ranges.

AGC Chemicals Americas, Inc. RESIFA™ SOLESPHERE™ NP-30 is a non-porous, heat-treated silica particle. Belonging to the NP-series, it has a very high hardness, so it is often used as a filler for increasing resin hardness. The high refractiveness of these grades offers good transparency when added to resins and films. It is also used for anti-blocking in film applications. The NP-series has excellent heat resistance and is very dimensionally stable at various temperature ranges.

ASCOM 20 is a high-purity limestone filler used in various industries, including powder coatings, wall putties, and water-based decorative coatings. It is known for its highest whiteness and low iron, silica, and magnesium content, making it ideal for matt finish coatings and wall treatments. This product is also used in solvent-based decorative paints, protective coatings, and sealants, where its superior quality and enormous reserves contribute to enhanced performance and durability.

ASCOM 35 is a high-purity limestone filler with exceptional whiteness, low iron, silica, and magnesium content. It is used in water-based decorative paints, semi-gloss powder coatings, rubber moldings, paints, adhesives, and sealants, benefiting from extensive limestone reserves.

ASCOM 15 is another high-purity limestone filler, known for its high whiteness and low iron, silica, and magnesium content. It is used in waterproofing, wall putties, glaze and latex compounds, paints, and adhesives, offering excellent performance derived from vast limestone reserves.

ASCOM 16 is a filler with the highest whiteness and purity, containing low levels of iron, silica, and magnesium. It is applied in waterproofing, wall putties, glaze and latex compounds, paints, and adhesives, with limestone derived from large reserves.

ASCOM 17A is a high-purity limestone filler with the highest whiteness and low levels of iron, silica, and magnesium. It is widely used in industries such as waterproofing, wall putties, glaze and latex compounds, paints, and adhesives, benefiting from enormous limestone reserves.

ASCOM 50 is a high-purity limestone filler with the highest whiteness and low iron, silica, and magnesium levels. It is used in water-based decorative paints, semi-gloss powder coatings, rubber moldings, paints, adhesives, and sealants, sourced from vast limestone reserves.

ASCOM 80T is a premium quality, surface-coated, very fine calcium carbonate with good dispersion properties, manufactured from high-purity, white ground calcium carbonate. It is used as a filler in the following industries: PVC compounds and masterbatch, and water-based inks.

ASCOM 90 is a limestone powder known for its highest whiteness and purity, with low levels of iron, silica, and magnesium. It is sourced from vast limestone reserves, offering high-quality performance in various industrial applications.

ASCOM 30 is another high-purity limestone filler with superior whiteness and low iron, silica, and magnesium levels. It is used in water-based decorative paints, semi-gloss powder coatings, rubber moldings, paints, adhesives, and sealants, derived from extensive limestone reserves.

ASCOM 10N is a limestone filler with high whiteness and purity, containing low levels of iron, silica, and magnesium. It is used in fiberglass, decorative paints, agriculture products, animal feeds, oil drilling, and glazing industries, sourced from large limestone reserves.

Poraver® 1 - 2 mm mm is an expanded glass granulate, provides a lightweight aggregate solution suitable for diverse applications.

Poraver® 0.1 - 0.4 mm is an expanded glass granulate, provides a lightweight aggregate solution suitable for diverse applications.

Poraver® 2 - 4 mm mm is an expanded glass granulate, provides a lightweight aggregate solution suitable for diverse applications.

Poraver® 0.04 - 0.125 mm is an expanded glass granulate, provides a lightweight aggregate solution suitable for diverse applications.

Poraver® 0.5 - 1 mm mm is an expanded glass granulate, provides a lightweight aggregate solution suitable for diverse applications.

Pansil® is a light cream-colored, free-flowing powder with no discernible odor. It functions as a polyfunctional additive, characterized by its high sorptive properties. The particles of Pansil are open-textured and form irregular microagglomerates.

Poraver® 0.25 - 0.5 mm mm is an expanded glass granulate, provides a lightweight aggregate solution suitable for diverse applications.

VANSIL® W-10 Wollastonite is a coarse grade of wollastonite with approximately 20% retained on a 325 mesh sieve. VANSIL W-10 can be used as a general purpose extender pigment where ultra-fineness is not required such as texture paints and block fillers. The naturally high pH of wollastonite helps to buffer latex paints and coatings, which contributes to improved corrosion resistance and weathering. This also extends in-can stability and prolongs the lifetime of the coating.

VANSIL® WG Wollastonite is a high aspect ratio, long needle grade of wollastonite. It is used principally as a mineral filler and reinforcing agent to enhance mechanical strength properties in high build coatings, texture paint, and block fillers. In high film build coatings, the needle-like shape of VANSIL WG improves mud crack resistance and sag resistance, while also contributing to peak retention in texture coatings. The naturally high pH of wollastonite helps to buffer latex paints and coatings, which contributes to improved corrosion resistance and weathering. This also extends in-can stability and prolongs the lifetime of the coating. In calcium silicate board and fiber cement, VANSIL WG increases flexural and compressive strength, reduces shrinkage, and reduces cracking. It is recommended that high aspect ratio grades of VANSIL be added late in process to avoid possible damage to the needle structure from high shear mixing.