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Capstone™ ST-100HS
As of early 2025, Chemours Capstone™ has been discontinued, and ChemPoint is committed to helping customers find alternatives. We offer Momentive CoatOSil™ and Silquest™, silicone-based surface-modifying additives, and ICT Thetawet™, Thetaguard™, and Thetapel™ fluorosurfactants and fluoropolymers. Contact us, and one of our technical experts will assist you in finding the closest option for your formulation.
Capstone™ ST-100HS is a water based dispersion of fluorinated acrylic copolymer designed to be used as the active ingredient in low VOC penetrating sealer for porous surfaces.
Fulfilled By ChemPoint
- Manufacturer: Chemours
- Product Line: Capstone™ Fluorosurfactants
- Product: Capstone™ Repellents for Stone & Tile
- Industries: Building & Construction | Coatings
- Authorized Countries: Canada | United States
Fulfilled By ChemPoint
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Overview
Capstone™ ST-100HS is a water-based dispersion of fluoropolymer designed to provide a durable, non-film forming, protective barrier to water and oil on porous surfaces like natural stone, concrete, and unglazed tile. It should be diluted with water to 1.5-2.5% actives applied using a brush, roller, mop, or low-pressure sprayer until the surfaces is thoroughly wet. Typical coverage rate is 3-25 square meters per liter. When compared to competitive silicone based sealers Capstone™ ST-100HS has similar water repellency but far superior oil and stain resistance.
Capstone™ ST-100HS is only approved 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: Clear to slightly hazy, colorless to yellow liquid
Stability: Stable at normal temperatures; perishable if frozen
pH: 3.5–5
Active Solids, % 25
Density, g/mL 1.104
Flash Point (Closed Cup), °C (°F) Not flammable
Boiling Point, °C (°F) ~100 (~212)
Freezing Point, °C (°F) ~0 (~32)
Shelf Life: 2 years
Spray: Consumer spray applications with pressure below 60 psi
Primary Chemistry: Fluorinated Acrylic Copolymer
Features & Benefits
Durable protection from staining Superior oil and water repellency Retains the natural appearance of stone, tile, concrete or masonry Allows substrate to breathe (non-film forming) Easy to clean and maintain Preserves the beauty of natural stone and tile
Problems Solved
Poor water resistance of porous stone and tile surfaces.
VOC regulations regarding to architectural coatings.
Applications
Capstone™ ST-100HS is a repellent used in water-based penetrating sealers for natural stone, unglazed tile, grout, terracotta, concrete,
and brick.
Related Applications
Building & Construction
Coatings
Related Chemistries
Coatings
Related Functions
Capstone™ Fluorosurfactants Articles
Chemours Capstone® LCPFAC & SNUR Regulations
Capstone® fluorosurfactants & fluororepellents were some of the first short-chain alternatives commercialized so Chemours has lots of experience helping their customers reformulate.
Chemours Zonyl® To Capstone™
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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