| Product | Generic | Company |
| UBE Nylon | Nylon 12 Elast, Nylon 6, Nylon 612, Nylon 66/6 | UBE America, Inc. UBE Engineering Plastics, S.A.
|
| UBE Polyethylene | PE, Unspecified | UBE America, Inc. |
| UBESTA | Nylon 12, Nylon 12 Elast | UBE America, Inc. UBE Engineering Plastics, S.A.
|
| UDEL® | PSU | Solvay Advanced Polymers |
| ULM™ | TS, Unspecified | DSM Somos® |
| ULTEM* | PEI, PEI+PCE | SABIC Innovative Plastics SABIC Innovative Plastics Asia Pacific SABIC Innovative Plastics Europe
|
| ULTRA LOW™ Pentane | PS (EPS) | NOVA Chemicals |
| Ultracast II | TSU | BJB Enterprises, Inc. |
| Ultradur® | PBT, PBT+ASA, PBT+PET | BASF Corporation |
| Ultraflex® | TPE | Singapore Polymer Corporation (Pte) Ltd |
| Ultrafloor™ | TP, Unspecified | Lear Corporation |
| Ultraform® | Acetal (POM) Copoly, Acetal (POM) Homopoly | BASF Corporation |
| Ultramid® | Nylon 6, Nylon 66, Nylon Copolymer | BASF Corporation |
| Ultramid® A | Nylon 66 | BASF Corporation |
| Ultramid® B | Nylon 6 | BASF Corporation |
| Ultramid® C | Nylon 66/6 | BASF Corporation |
| Ultramid® T | Nylon 6/6T | BASF Corporation |
| Ultrason® | PES, PPSU | BASF Corporation |
| Ultrason® E | PES | BASF Corporation |
| Ultrason® S | PSU | BASF Corporation |
| Ultrastyr | ABS | Polimeri Europa |
| Ultrathene® | EVA | LyondellBasell Industries |
| ULTRATRAC® | Polyester, TS | Haysite Reinforced Plastics |
| UltreClear™ | PET | Wellman, Inc. |
| ULTZEX® | LLDPE | Prime Polymer Co., Ltd. |
| UMERIT® | LLDPE | UBE America, Inc. |
| UMG ABS® | ABS | UMG ABS, Ltd. |
| UMG ALLOY® | ABS+PBT, ABS+PC, ASA+PC, PC Alloy | UMG ABS, Ltd. |
| UNIBRITE® | AES | Nippon A&L Inc. |
| Unichem | PVC, Flexible, PVC, Rigid, PVC, Unspecified | Colorite Polymers |
| Unichem Elastichem | PVC Elastomer | Colorite Polymers |
| Unichem Multichem | PVC+PUR | Colorite Polymers |
| Unifill-60 | HDPE, PP Homopoly | North Wood Plastics, Inc. |
| Unilex™ | HDPE, HDPE Copolymer, LDPE, LLDPE, PE, Unspecified, PP Homopoly, PP Impact Copoly, PP Random Copoly | United Polychem |
| Uniprene® | TPE, TPV | Teknor Apex Company |
| UNIPURGE™ | PE, Unspecified | Dow Plastics |
| UNISOFT ADHESION™ | SEBS | UNITED SOFT PLASTICS, Inc. |
| UNISOFT SPECIAL™ | SEBS | UNITED SOFT PLASTICS, Inc. |
| UNISOFT TPE™ | SEBS | UNITED SOFT PLASTICS, Inc. |
| Unithene | HDPE | USI Corporation |
| UNITIKA Nylon 6 | Nylon 6 | UNITIKA Plastics Division |
| UNITIKA Nylon 66 | Nylon 66 | UNITIKA Plastics Division |
| UNIVAL™ | HDPE | Dow Plastics |
| U-polymer | Polyarylate | UNITIKA Plastics Division |
| Uralane | PUR, Unspecified | Huntsman Advanced Materials |
| Uralite | PUR, Unspecified, PUR-Capro, PUR-Ester, PUR-Ester/MDI, PUR-Ester/TDI, PUR-Ether, PUR-Ether/MDI, PUR-Ether/TDI, PUR-MDI, PUR-TDI | Fiber Resins |
| Uravin | PVC Alloy | Vi-Chem Corporation |
| UTEC | UHMWPE | Braskem |
| UTTAP | HPPA, Nylon, Unspecified, PC Alloy, PES, PSU Alloy | Ovation Polymers Inc. |
|