Dow Launches Dowsil IE-5619 Fluorine-Free Textile Finish
The silicone-organic hybrid finish offers water and oil repellency without conventional fluorinated chemistry, and is being made available globally to textile formulators, mills and brands.
Updated on Nov. 2, 2026 in Chemistry
Dow has launched Dowsil IE-5619 DWOR Emulsion, a silicone-organic hybrid textile finishing technology that provides water repellency and resistance to oil-based contaminants without relying on conventional fluorinated chemistry. The product is intended for natural, synthetic and blended fabrics and is being made available globally.
Why it matters
Dow developed the product to help manufacturers respond to increasingly stringent restrictions on fluorinated substances used in textile finishing. The launch gives formulators, mills and brands a alternative path to repellent performance.
The emulsion is a 30% solids concentrate applied at 1-3% based on fabric weight and cured for one to three minutes at a minimum of 150°C. Repellency is designed to hold through more than 20 domestic laundering cycles, though results must be validated for each fabric and finishing formulation.
The players
Dow
Dow is a multinational chemical company that develops materials and specialty chemicals for industrial and consumer markets.
The details
The finish is designed for integration into conventional textile finishing processes. Dow provides technical support to help validate performance on individual fabrics and production lines.
Timeline
• November 2, 2026: Dow's launch of Dowsil IE-5619 is reported.
The Tech Race
The launch positions a silicone-organic hybrid against the long-dominant fluorinated durable water repellent (DWR) finishes that textile makers have relied on for water and oil repellency. It reflects a shift in the industry toward alternatives as regulators tighten restrictions on fluorinated substances.
The finish could affect the performance and make-up of water- and oil-resistant clothing and fabrics sold to consumers. Buyers may see different repellency treatments as manufacturers adopt non-fluorinated options, though performance will depend on the specific fabric and finishing process.
The takeaway
Manufacturers seeking alternatives to fluorinated repellents should plan to validate any new finish on each fabric type and production line before scaling. Performance claims such as laundering durability should be confirmed under actual use conditions.
Further reading
Explore more in Chemistry for context on how new formulations are reshaping materials science.
