Who makes Surlyn now?
Surlyn is sold by Dow in the U.S., Canada and Latin America. Polymer: Ionomer. Checked Nov 2, 2026.
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- Owner now
- Dow
- Status
- Sold earlier
- Polymer
- Ionomer
- Checked
- Nov 2, 2026
The short answer
Owner now (Americas): Dow
Sold earlier
What changed, and when
Former DuPont brand. Now a Dow brand, after the Dow and DuPont merger. Sold by Dow, not DuPont.
Sources
Ownership history
- DuPont (1963)
- Dow (2019)
What to check on your Surlyn paperwork
- Ask your seller in writing whether the grade name, suffix and formula are unchanged.
- Get the data sheet and COA from the new owner and compare them line by line with your old ones.
- Look up the UL file holder name for your grade on UL Product iQ.
- Ask for FDA, REACH, RoHS and other letters issued by the new owner.
- Update your supplier record (legal entity, remit-to address, contacts) and confirm any bank change by phone.
Company names you may see on older Surlyn paperwork
DuPont, E. I. du Pont de Nemours and Company, E.I. du Pont de Nemours, DuPont Packaging & Industrial Polymers, DowDuPont. If an old drawing, COA or UL file names one of these, it can still refer to Surlyn.
Current Surlyn data sheets
Dow SURLYN brand page. Ex-DuPont brand now on dow.com. Grade TDS are in Dow's technical data sheet search. Use the newest data sheet and COA from the current owner, not a copy saved years ago.
Other brands from Dow
Affinity, ATTANE, Bynel, CONTINUUM, Dowlex, Elite, Elvaloy, Elvax, Engage, Infuse, Nucrel, SILASTIC, XIAMETER.
Questions
Who makes Surlyn now?
Dow sells Surlyn in the U.S., Canada and Latin America (checked Nov 2, 2026).
Did Surlyn change owners?
Status: Sold earlier. Former DuPont brand.
Where do I find current Surlyn data sheets?
On the owner's site: Dow SURLYN brand page. Use the newest data sheet and COA from the current owner.
From our resin brand ownership tracker, which covers 318 brands with a source for every row. Spot a change we missed? Tell us.
Talk to a polymer chemist
Have a grade on a print, a bag label, or just a part you need to make? Send what you have.
- Send the grade, a callout or a photo of the bag label.
- A polymer chemist checks it, and suggests a matched alternative if it is hard to get.
- We aim to quote within one to three business days, from one gaylord to a railcar.
Need Surlyn or a matched alternative?
Send the Surlyn grade you run. A polymer chemist confirms it, quotes it where we can source it, or suggests a matched alternative with what differs.