Who makes Magnum now?
Magnum is sold by Trinseo in the U.S., Canada and Latin America. Polymer: ABS (mass). Checked Nov 2, 2026.
The short answer
Owner now (Americas): Trinseo
Chapter 11
What changed, and when
Still a Trinseo brand. Trinseo filed a prepackaged Chapter 11 on May 26, 2026 to cut about $2 billion of debt; lenders are to get the equity. As of its Oct 2026 report the plan was not yet approved (the court ordered mediation in Sep 2026), and Trinseo now expects to exit in the first half of 2027.
Sources
Ownership history
- Dow Chemical
- Styron (Bain Capital) (2010)
- Trinseo (2014)
What to check on your Magnum paperwork
- Ask your seller about lead times and allocation while the case runs.
- Keep copies of your current data sheets, COAs and regulatory letters.
- Consider qualifying a second source now, before you need it.
Company names you may see on older Magnum paperwork
Dow Chemical, Dow, Styron. If an old drawing, COA or UL file names one of these, it can still refer to Magnum.
Current Magnum data sheets
Trinseo MAGNUM ABS resins. Trinseo's regional grade list links out to its own catalog hosted on UL Prospector. Use the newest data sheet and COA from the current owner, not a copy saved years ago.
Other brands from Trinseo
Altuglas, Calibre, Emerge, Plexiglas, Pulse, Styron, Tyril.
Buying Magnum or an alternative
ResinBridge quotes Magnum where we can source it, or a matched alternative with what differs, from one gaylord to a railcar. See our guide to ABS.
Questions
Who makes Magnum now?
Trinseo sells Magnum in the U.S., Canada and Latin America (checked Nov 2, 2026).
Did Magnum change owners?
Status: Chapter 11. Still a Trinseo brand.
Where do I find current Magnum data sheets?
On the owner's site: Trinseo MAGNUM ABS resins. 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.
Need Magnum or a matched alternative?
Send the Magnum grade you run. A polymer chemist confirms it, quotes it where we can source it, or suggests a matched alternative with what differs.