| Amorphous Silica Microspheres & Nanospheres | Cospheric LLC | Silica microspheres are inherently hydrophillic and negatively charged. These particles provide higher opacity than glass microspheres and are often used as contrast particles. Aqueous suspensions of silica microspheres rarely require the use of surfactan...view more Silica microspheres are inherently hydrophillic and negatively charged. These particles provide higher opacity than glass microspheres and are often used as contrast particles. Aqueous suspensions of silica microspheres rarely require the use of surfactants or stabilizers. Silane coatings enable silica microspheres to be modified to generate functional groups or alter surface properties. Additional advantage of silica microspheres is glass transition temperature of over 1000 degrees Celsius, which makes them suitable for high temperature applications. Silica microspheres and nanospheres are composed of synthetic amorphous silica made in a laboratory batch environment. view less | |
| Barium Titanate Glass Spheres & Microspheres | Cospheric LLC | Barium titanate glass is a unique optical glass formulation based on a large percentage of Barium Oxide (BaO) and Titanium Oxide (TiO2), as opposed to other traditional glass formulas which are mostly Silica (SiO2). Barium titanate glass offers a much hig...view more Barium titanate glass is a unique optical glass formulation based on a large percentage of Barium Oxide (BaO) and Titanium Oxide (TiO2), as opposed to other traditional glass formulas which are mostly Silica (SiO2). Barium titanate glass offers a much higher refractive index compared to other glass formulations. Refractive Index is the ratio of the speed of light in a vacuum to the speed of light in the specified material - a description of how light slows down as it passes through an optical material. High refractive index microspheres are critical when used for optical systems where high refractive power is required such as endoscopy, micro-optics, defense and microscopy. Barium titanate glass microspheres will reflect back more light directly to the viewer. High index of refraction enables retroreflectivity which is often desired in guard rails, traffic signs, reflective paint, tape or clothing. Barium titanate glass hemispherically coated with aluminum ensures that the light bounces off the aluminum- coated half of the sphere and produces the retroreflective effect for high visibility in dark conditions. view less | |
| Borosilicate Glass Spheres & Microspheres | Cospheric LLC | Borosilicate Glass is well-known for its durability, low coefficient of expansion, low density, high softening point, high resistance to acids and thermal shock, compared to other glass formulations. The chemical composition consists primarily of silicon ...view more Borosilicate Glass is well-known for its durability, low coefficient of expansion, low density, high softening point, high resistance to acids and thermal shock, compared to other glass formulations. The chemical composition consists primarily of silicon oxide (SiO2) and boron oxide (B2O3). Solid Glass Microspheres, also called glass beads, provide multiple benefits including enhanced processing, excellent chemical and heat resistance, thermal stability, low oil absorption, and are often used in automotive, electrical, household appliance, adhesives, packaging, paint and construction industries. Glass is non-toxic, extremely stable and recyclable. Cospheric specializes in solid glass microspheres with perfect sphericity, tight tolerances and particle size distributions for biomedical, life sciences, microscopy, automotive, high-tech equipment and specialty applications. view less | |
| Density Marker Beads | Cospheric LLC | Density marker beads are small colored microspheres of known mass density that are used for calibrating density gradients and determining density in gradient columns. Density gradients are often used for separations and purification of cells, viruses and ...view more Density marker beads are small colored microspheres of known mass density that are used for calibrating density gradients and determining density in gradient columns. Density gradients are often used for separations and purification of cells, viruses and sub-cellular particles. Generally a set of several density marker beads covering a range of densities is used. The gradient is calibrated with beads that float at different heights within the column. When a test sample is added to the column, it drops until the point of neutral buoyancy, and the density is determined from the calibration chart. Density gradient columns can be used to measure the density of any sample. view less | |
| DESMODUR® BL 3175 SN | Covestro | A blocked, aliphatic polyisocyanate based on HDI. Ideal for use in combination with Desmophen grades to formulate lightfast, one-component polyurethane stoving coatings; as an additive in conventional stoving systems to improve flexibility and adhesion. | |
| Desmodur® BL 3370 MPA | Covestro | Desmodur® BL 3370 MPA is a blocked aliphatic polyisocyanate based on HDI. Is ideal for use in combination with Desmophen grades to formulate lightfast, one-component stoving polyurethane coatings with high resistance to thermal yellowing; as an additive i...view more Desmodur® BL 3370 MPA is a blocked aliphatic polyisocyanate based on HDI. Is ideal for use in combination with Desmophen grades to formulate lightfast, one-component stoving polyurethane coatings with high resistance to thermal yellowing; as an additive in conventional stoving coating systems to improve the reactivity, flexibility and adhesion. view less | |
| Desmodur® BL 4265 SN | Covestro | Desmodur® BL 4265 SN is a blocked, aliphatic polyisocyanate based on IPDI ideal for use in combination with polyol components to formulate lightfast one-component stoving coatings. | |
| DESMODUR® XP 2838 | Covestro | Desmodur® XP 2838 is used primarily as the hardener component for light-fast two-component polyurethane coatings with high resistance to chemicals and weathering, very good gloss retention and outstanding mechanical properties. Preferred co-reactants are ...view more Desmodur® XP 2838 is used primarily as the hardener component for light-fast two-component polyurethane coatings with high resistance to chemicals and weathering, very good gloss retention and outstanding mechanical properties. Preferred co-reactants are polyacrylate or polyester polyols. The main applications for systems based on Desmodur® XP 2838 are air- and force-drying coatings for automotive OEM, automotive refinishing, transportation, industrial finishing and plastics. view less | |
| DESMODUR® XP 2840 | Covestro | Desmodur® XP 2840 is an aliphatic polyisocyanate based on hexamethylene diisocyanate. It is used as the hardener component for lightfast, weather-stable coating systems. As a particularly low-viscosity polyisocyanate, Desmodur® XP 2840 is well suited for ...view more Desmodur® XP 2840 is an aliphatic polyisocyanate based on hexamethylene diisocyanate. It is used as the hardener component for lightfast, weather-stable coating systems. As a particularly low-viscosity polyisocyanate, Desmodur® XP 2840 is well suited for the formulation of high-solids coatings for general industrial coating, automotive refinishing, transportation and plastics coating applications. view less | |
| Desmophen® NH 1220 | Covestro | Desmophen® NH 1220 is an aminofunctional co-reactant for polyisocyanates used for the formulation of tough but flexible, lightfast and highly reactive two-component polyurethane spray coatings. | |
| Desmophen® NH 1420 | Covestro | Desmophen® NH 1420 is an aminofunctional co-reactant for polyisocyanates used for the formulation of high-solids, two-component polyurethane topcoats and solvent-free coating materials. | |
| Desmophen® NH 1520 | Covestro | Desmophen® NH 1520 is an aminofunctional co-reactant for polyisocyanates used for the formulation of high-solids, two-component polyurethane topcoats and solvent-free coating materials. | |
| Desmophen® NH 1521 | Covestro | Desmophen® NH 1521 is an amino-functional co-reactant for polyisocyanates used for the manfuacture of high-solids, two-component polyurethane coating formulations. | |
| Fluorescent & Phoshorescent Microspheres | Cospheric LLC | Polyethylene microspheres of high sphericity and narrowly graded particle size distribution are used in industrial and scientific applications for process control, diagnostics, and medical device technology. It is often advantageous to color code the part...view more Polyethylene microspheres of high sphericity and narrowly graded particle size distribution are used in industrial and scientific applications for process control, diagnostics, and medical device technology. It is often advantageous to color code the particles by size to better understand which part of the process the spheres of the specific size were able to pass through, or where the contamination in the process is coming from. Polyethylene is inert to most solvents. Polyethylene microspheres are hydrophobic and need to be coated with surfactant prior to suspending in water or aqueous media. view less | |
| Hollow Glass Microspheres | Cospheric LLC | Hollow Glass Microspheres, also called bubbles, microbubbles, or microballoons, are typically made out of borosilicate- sodalime glass blend formulation and provide the benefits of low density, high heat and chemical resistance. The walls of glass microsp...view more Hollow Glass Microspheres, also called bubbles, microbubbles, or microballoons, are typically made out of borosilicate- sodalime glass blend formulation and provide the benefits of low density, high heat and chemical resistance. The walls of glass microspheres are rigid and typically have the thickness of 10% of the diameter of the sphere. The crush strength of the hollow spheres is determined by the thickness of the walls and, as expected, the higher the sphere density the higher the crush strength. The lightweight hollow glass spheres are chemically stable, noncombustible, nonporous, and have excellent water resistance. view less | |
| IMPRAFIX® 2794 XP | Covestro | Imprafix® 2794 XP is crosslinker with improved reactivity and thermostability (yellowing). It is available in a cosolvent-free supply form, using for textile coating. In combination with Bayhydrol® polyols Imprafix® 2794 XP can be used for the formulation...view more Imprafix® 2794 XP is crosslinker with improved reactivity and thermostability (yellowing). It is available in a cosolvent-free supply form, using for textile coating. In combination with Bayhydrol® polyols Imprafix® 2794 XP can be used for the formulation of water-reducible, lightfast one-component polyurethane baking coatings and as an additive in waterborne baking systems to improve flexibility, impact strength and adhesion. view less | |
| Polyethylene Microspheres & Nanospheres | Cospheric LLC | Polyethylene microspheres of high sphericity and narrowly graded particle size distribution are used in industrial and scientific applications for process control, diagnostics, and medical device technology. Neutrally-buoyant spherical polymer particles a...view more Polyethylene microspheres of high sphericity and narrowly graded particle size distribution are used in industrial and scientific applications for process control, diagnostics, and medical device technology. Neutrally-buoyant spherical polymer particles are specifically designed for suspension in fresh water, enabling flow visualization and PIV analysis of fluid flow in a device. It is often advantageous to color code the particles by size to better understand which part of the process the spheres of the specific size were able to pass through, or where the contamination in the process is coming from. Polyethylene is inert to most solvents. Polyethylene microspheres are hydrophobic and need to be coated with surfactant prior to suspending in water or aqueous media. view less | |
| Poly(methyl methacrylate) Spheres, Microspheres & Nanospheres | Cospheric LLC | Poly(methyl methacrylate), PMMA, or acrylic microspheres and spheres are spherical polymer beads that are a transparent thermoplastic synthesized from methyl methacrylate polymer. PMMA microbeads are known for high impact and heat resistance, and good ten...view more Poly(methyl methacrylate), PMMA, or acrylic microspheres and spheres are spherical polymer beads that are a transparent thermoplastic synthesized from methyl methacrylate polymer. PMMA microbeads are known for high impact and heat resistance, and good tensile and flexural strength. These strong yet lightweight polymer microspheres are often used as spacers, fillers, and reference particles for a variety of specialty applications in life sciences, medical technology, MEMS, optics and development of high performance composites. Uncoated poly(methyl methacrylate) or PMMA microspheres and spheres are often used in manufacturing of porous ceramics, self assembled microfluidic devices, and in biomedical research. Also often used as a lightweight alternative to glass microspheres. view less | |
| Retroreflective Microspheres | Cospheric LLC | Retroreflective Microspheres incorporate a hemispherically coated aluminum shell which provides maximum retroreflection. In bulk, these metallized glass spheres appear as a grey powder. Under an optical microscope, each individual microsphere displays a p...view more Retroreflective Microspheres incorporate a hemispherically coated aluminum shell which provides maximum retroreflection. In bulk, these metallized glass spheres appear as a grey powder. Under an optical microscope, each individual microsphere displays a partial aluminum coating. Aluminum (Al) coatings on microspheres offer advantages in developing retroreflective surfaces for high visibility materials and applications. The hemispherical (half-shell) aluminum coating creates the mechanism for retroreflectivity as the light passes through the clear half of the glass bead and “bounces” off the reflective aluminum-coated back surface, directing the light back to the source or the viewer. Additional surface coatings (silane or fluorochemical) ensure that the spheres remain on the surface of the formulation, thereby enhancing the effect of retroreflectivity. view less | |
| Soda Lime Glass Spheres & Microspheres | Cospheric LLC | Solid soda lime glass, also know as soda lime silicate glass, is the most common type of solid glass microspheres available. Solid Glass Microspheres, also called glass beads, provide multiple benefits including enhanced processing, excellent chemical and...view more Solid soda lime glass, also know as soda lime silicate glass, is the most common type of solid glass microspheres available. Solid Glass Microspheres, also called glass beads, provide multiple benefits including enhanced processing, excellent chemical and heat resistance, thermal stability, low oil absorption, and are often used in automotive, electrical, household appliance, adhesives, packaging, paint and construction industries. Glass is non-toxic, extremely stable and recyclable. Cospheric specializes in solid glass microspheres with perfect sphericity, tight tolerances and particle size distributions for biomedical, life sciences, microscopy, automotive, high-tech equipment and specialty applications. view less | |
| Stainless Steel Spheres & Microspheres | Cospheric LLC | Stainless Steel Spheres & Microspheres are part of a wide selection of size ranges of corrosion resistant stainless steel microspheres from 1um on up to 1.2mm. Highly spherical 304 Stainless Steel microspheres are often used as conductive spacers in bond ...view more Stainless Steel Spheres & Microspheres are part of a wide selection of size ranges of corrosion resistant stainless steel microspheres from 1um on up to 1.2mm. Highly spherical 304 Stainless Steel microspheres are often used as conductive spacers in bond line applications or as high density test projectiles. view less |
