Dow Launches Fluorine-Free Textile Repellent Finish
Dow's silicone-organic finish offers water and oil repellency without fluorinated chemistry, with fabric-specific validation still required.
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 available globally to textile chemical formulators, mills, and brands, and is a launch rather than a long-term field-tested result.
Why it matters
Manufacturers face increasingly stringent restrictions on fluorinated substances, which are commonly used for water and stain repellency in fabrics. Dow developed the product to offer a route to repellent finishes that does not depend on that chemistry, placing it within a broader industry shift away from fluorinated treatments.
The figures are manufacturer-reported specifications: a 30% solids concentrate applied at 1-3% of fabric weight and cured for one to three minutes at no less than 150°C. The stated durability of more than 20 domestic laundering cycles is a company claim, and the source gives no independent testing or comparison against fluorinated finishes.
The players
Dow
A global chemical manufacturer whose Dowsil brand of silicone products includes this textile finishing technology.
The details
Dowsil IE-5619 is a silicone-organic hybrid, meaning its molecules combine silicon-based chains with carbon-based components to create a water-repellent surface film on fibers. It is designed to slot into conventional textile finishing processes, so mills can apply it using equipment they already operate. After application, the treated fabric is cured, a heating step of one to three minutes at at least 150°C that sets the finish onto the fabric. Dow says the treatment should stay effective through repeated home washing.
Timeline
Dow's launch of Dowsil IE-5619 was reported on November 2, 2026.
The Tech Race
Dow is positioning Dowsil IE-5619 against conventional fluorinated repellent finishes as regulators tighten limits on those chemicals. The source does not name competing silicone or non-fluorinated finishing products, so the wider competitive field cannot be characterized from it.
Textile manufacturers and brands can begin evaluating the product now, though performance must be validated for each fabric and formulation before production use. The source gives no consumer retail availability or pricing, so end-user garments treated with it are not specified.
The takeaway
Manufacturers weighing fluorine-free repellent finishes should test Dowsil IE-5619 on their own fabrics, since Dow states performance must be validated per fabric and formulation. Watch for independent laundering data confirming the claim of repellency after more than 20 domestic wash cycles.
Further reading
For background on the materials behind this launch, explore the Chemistry section.
Source note: This article includes information reported by Innovation in Textiles.
