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Capstone™ FS-61
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™ FS-61 is an anionic fluorosurfactant that dramatically reduces surface tension of aqueous formulations. It is ideally suited for improving the performance of architectural coatings.
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Documents
- Manufacturer: Chemours
- Product Line: Capstone™ Fluorosurfactants
- Product: Capstone™ Surfactants and Coating Additives
- Industries: Adhesives | Building & Construction | Care Chemicals | Coatings | Inks
- Authorized Countries: Canada | United States
Fulfilled By ChemPoint
Fulfilled By ChemPoint
Manufacturer
Product Line
Industries
Authorized Countries
Canada
United States
Overview
Capstone™ FS-61 is a water-based, anionic fluorosurfactant that is APEO and VOC free. When added in very small amounts to aqueous formulations Capstone™ FS-61 drastically reduces surface tension. The reduction in surface tension provided by Capstone™ FS-61 make it an ideal wetting, leveling, and film control additive to water-based paints and coatings. The multi-functional properties of Capstone™ FS-61 allows for the simplification of latex paint formulations. Capstone™ FS-61 is available commercially as a 14% solids solution packaged in pails, drums, and totes.
Note: All samples and purchases of Capstone for new projects and applications must first be evaluated for approval by ChemPoint and Chemours.
Specifications
Appearance: Pale yellow to dark amber liquid; clear to hazy liquid
pH: 7.5–9.0
Specific Gravity: 1.1 g/mL
Flash Point: Does not flash
Stability: This product should be protected
from freezing and is intended for use in formulations with a pH range of 6.5–12.0.
Composition: 14% solids
Shelf Life: 2 years
Foam: Can foam with excessive shaking
Primary Chemistry:
Anionic Fluorosurfactant
Features & Benefits
- Anti-blocking
- Oil repellency
- Dirt pick-up resistance
- Wetting and enhanced leveling
- Reduces cratering and provides faster spreading
- Lowers surface tension to improve cleaning efficiency
- Very Low Foam
- REACH compliant
- Listed on TSCA inventory
Problems Solved
Blocking of paints and coatings used in architectural applications.
High surface tension that leads to insufficient wetting and leveling of water-based paints and coatings.
Applications
When added to low VOC architectural coatings at low rates, typically 0.02-0.04 active ingredients, Capstone™ FS-61 dramatically improves wetting and leveling thus reducing surface defects. In addition, when Capstone™ FS-61 is cured into a latex film it improves blocking and soiling resistance. Capstone™ FS-61 allows for the reduction of other wetting, leveling, and defoamer additives in water-based formulations and will provide an overall cost savings.
When added to specialty cleaners Capstone™ FS-61 helps to improve the cleaning efficiency. It is typically used in metal cleaning, car washes, and glass cleaners to reduce surface tension. Suggested usage rates range from 0.01-0.03% actives.
Capstone™ FS-61 is used in water-based floor care formulations including finishes, waxes, and polishes to improve wetting and reduce surface defects.
Capstone™ FS-61 also improves re-wet properties in multi-coat application.
Typical use rates in floor care applications ranges from 0.005-0.02% actives.
Related Applications
Related Chemistries
Related Functions
Building & Construction
Care Chemicals
Coatings
Inks
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