Capstone™ ST-200 is a solvent-based fluorinated polymer that forms a protective barrier to oil and water on stone, tile, and porous mineral-based surfaces. It is commonly used as the active ingredient in penetrating sealers.
Chemours Capstone™ ST-200 is an acrylic fluoropolymer dispersion in n-butyl acetate. It is designed to be used in penetrating sealers as the active ingredient to provide oil and water repellence for low-porosity stone, unglazed tile, concrete, and masonry used in indoor environments. Capstone™ ST-200 delivers a durable, non-film-forming, protective barrier to oil and water that preserves the natural look and beauty of stone surfaces. Compared to common silicone-based sealers, Capstone™ ST-200 provides far superior resistance to oils and stains.
Capstone™ ST-200 should be diluted to 0.7%–1.7% actives in an appropriate solvent and applied using a brush, roller, mop, or spray applicators, such as pressurized aerosol sprayers. The surface being treated should be wet thoroughly with Capstone™ ST-200 and allowed to dry for 15 to 30 minutes at ambient temperature. The excess liquid should then be removed.
Capstone™ ST-200 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.
Appearance: Colorless to yellow liquid
Freeze–thaw stability: Product gels below 0°C (32°F)
Active solids (%): 35
Solvent (%): 65
Density (g/mL): 0.968
Flash point, closed cup, °C (°F): 28 (82)
Boiling point, °C (°F): 120 (248)
Shelf life: 2 years
Primary Chemistry: Acrylic Fluoropolymer
Durable protection from staining
Freeze/thaw stable
Provides superior oil and water repellency
Preserves 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 applied using aerosol sprayers
Damage to stone, tile, or mineral-based surfaces caused by exposure to moisture or oils
Distortion of the original appearance of stone, tile, concrete, or masonry surfaces
Staining of porous stone or tile surfaces
Solvent-based penetrating sealers
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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