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Capstone™ ST-500
Capstone™ ST-500 is a water-based, high-performance fluoropolymer used as the active ingredient in penetrating sealers for acid-sensitive porous mineral surfaces. It provides a durable protective barrier to oil, water, and stains.
Capstone™ ST-500 is a water-based, fluorochemical dispersion designed to be used as a repellent in VOC-free penetrating sealers for stone, unglazed tile, grout, terra cotta, concrete, granite, brick, and more. Capstone™ ST-500 provides a durable, non-film-forming, protective barrier to oil and water that improves stain resistance and allows for easy cleanup. It has far superior oil repellency and stain resistance compared to common silicone-based sealers.
Capstone™ ST-500 should be diluted to 1.5%–2.5% actives with deionized water and can be applied with a brush, mop, roller, or sprayer, including aerosol spray cans. The surface being treated should be thoroughly wetted and allowed to dry at ambient temperature for 15 to 30 minutes. The excess liquid should then be removed.
Capstone™ ST-500 is approved only for indoor use.
All samples and purchases of Capstone for new projects and applications must first be evaluated for approval by ChemPoint and Chemours.
Specifications
Appearance: Colorless to amber liquid Freeze–thaw stability: Stable at normal temperatures; perishable if frozen pH: 9–11 Active solids (%): 25 Density (g/mL): 1.1 Flash point, closed cup: Not flammable Boiling point, °C (°F): ~100 (~212) Freezing point, °C (°F): ~0 (~32) Shelf life: 2 years
Primary Chemistry: Fluorochemical Dispersion
Features & Benefits
Provides durable protection from staining Imparts superior oil and water repellency Retains the natural appearance of stone, tile, concrete, and masonry Allows substrate to breathe and is not film forming Easy to clean and maintain Complies with REACH requirements Listed on TSCA inventory Can be used in aerosol spray cans
Problems Solved
Sensitivity of stone or tile surfaces to acidic penetrating sealers Damage to surfaces caused by exposure to water or oils Staining of porous stone or tile surfaces
Capstone® fluorosurfactants & fluororepellents were some of the first short-chain alternatives commercialized so Chemours has lots of experience helping their customers reformulate.
Capstone™ fluorosurfactants and repellents were introduced as sustainable replacements that meet the goals of the U.S. EPA 2010/15 PFOA Stewardship Program. They are based on short-chain molecules that cannot break down to PFOA or PFOS in the environment.
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ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
Thank you
Thank you for your inquiry and interest in ChemPoint. We will respond to you shortly.
ChemPoint will not under any circumstances release personal user information to individuals or companies. All information collection is solely used to support ChemPoint customers service communications. Read our Privacy Notice.
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