| Product | Generic | Company |
| Xantar® | PC | DSM Engineering Plastics |
| Xantar® C | ABS+PC | DSM Engineering Plastics |
| Xarec® | PS+SPS, SPS | Idemitsu Chemicals USA |
| XENOY* | ABS+PBT+PC, PBT, PBT+PET, PC+PBT, PC+PET, PC+Polyester | SABIC Innovative Plastics
SABIC Innovative Plastics Asia Pacific
SABIC Innovative Plastics Europe
|
| Xiran® | SMA | Polyscope Advanced SMA Polymers BV |
| Xmod™ | PP Copoly, PP Homopoly, PP Impact Copoly, PP, High Crystal, PP, Unspecified | Borealis A/S |
| X-Off | TP, Unspecified, TS, Unspecified | Patent Plastics Inc. |
| XPD8® | Proprietary | RBM Polymers, Inc. |
| XT® Polymer | Acrylic (PMMA) | CYRO Industries/Evonik Degussa Corporation |
| Xtel® | PPS, PPS Alloy | Chevron Phillips Chemical Company LLC |
| XU | PC | Dow Plastics |
| XYDAR® | LCP | Solvay Advanced Polymers |
| XYLEX* | PC+Polyester | SABIC Innovative Plastics
SABIC Innovative Plastics Asia Pacific
SABIC Innovative Plastics Europe
|
| Xyron® | Nylon+PPE, PPE+PP, PPE+PS, PPE+PS+Nylon, PPE+PS+PP, PPS+PPE | Asahi Kasei Corporation
Asahi Kasei Plastics North America Inc.
|
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