| Product | Generic | Company |
| KAFRIT PVC | PVC, Flexible, PVC, Rigid, PVC, Unspecified | KAFRIT Industries Ltd. |
| Kaneka MUH | ABS, ABS+PC | Kaneka Corporation |
| Kapex | PC | Ginar Technology Co., LTD. |
| Kapton® | PI, TS | DuPont Packaging & Industrial Polymers |
| Kareline® | ABS, Acetal (POM) Homopolymer, PLA, PP Copolymer, PP Homopolymer, PS (Specialty) | Kareline Oy Ltd. |
| Karlex | PBT+PET, PC, PC+PET | Ferro Corporation |
| Kazan HDPE | HDPE | Kazanorgsintez Joint Stock Company |
| Kazan LDPE | LDPE | Kazanorgsintez Joint Stock Company |
| Kazan LLDPE | LLDPE | Kazanorgsintez Joint Stock Company |
| Kazan MDPE | MDPE | Kazanorgsintez Joint Stock Company |
| K-Bin Rigid PVC | PVC, Rigid, PVC, Unspecified | K-Bin, Inc. |
| Kelon® A | Nylon 66 | LATI S.p.A. |
| Kelon® B | Nylon 6 | LATI S.p.A. |
| Keltan® | EPDM | DSM Thermoplastic Elastomers |
| Kelvx | Polyester, TP | Eastman Chemical Company |
| Kemcor | HDPE, HDPE Copolymer, HDPE, HMW, HDPE, MMW, LDPE, LLDPE, LMDPE, MDPE | Qenos Pty Ltd |
| Kemid | PEI | Saint Gobain - Norton |
| Kemlex | Acetal (POM) Homopolymer, TPE, TPU, Unspecified | Ferro Corporation
Precision Polymer Engineering Ltd.
|
| KEP | EPDM, EPM | Kumho Polychem Co., Ltd. |
| Kepamid® | Nylon 6, Nylon 66 | Korea Engineering Plastics Co., Ltd |
| Kepex® | Nylon 66, PBT, PBT+PET, Polyester Alloy | Korea Engineering Plastics Co., Ltd |
| Kepital® | Acetal (POM) Copolymer | Korea Engineering Plastics Co., Ltd |
| Kern | ABS, ABS+PC, Acetal (POM) Copolymer, Acetal (POM) Copolymer Alloy, Acrylic (PMMA), ASA, ASA+PC, EVA, HDPE, HMWPE, LCP, LDPE, Nylon 12, Nylon 6, Nylon 6/3T, Nylon 6/6T, Nylon 66, Nylon 66/6, PBT, PC, PEEK, PEI, PES, PET, PFA, Phenolic, Polyester, TS, PP, Unspecified, PPA, PPE+PS, PPS, PPSU, PS (GPPS), PSU, PTFE, PUR, Unspecified, PVC, Unspecified, PVDF, SAN, SBC, TPU, Unspecified, UHMWPE | Kern GmbH |
| KERNEL® | Plastomer | Japan Polychem Corporation |
| KetaSpire® | PEEK | Solvay Advanced Polymers |
| Keyflex® BT | TPEE | LG Chem Ltd. |
| Keyflex® TO | TPO (POE) | LG Chem Ltd. |
| Keysor PVC | PVC, Unspecified | Keysor-Century Corporation |
| KIBILAC® | ASA | CHI MEI CORPORATION |
| KIBISAN® | SAN | CHI MEI CORPORATION |
| KIBITON® Q-Resin | SBC | CHI MEI CORPORATION |
| KIBITON® TPE | TPE | CHI MEI CORPORATION |
| King Pearl® | PS (EPS) | Loyal Chemical |
| Kingfa | ABS, ABS+PBT, ABS+PC, Nylon 6, Nylon 66, Nylon, Unspecified, PBT, PC Alloy, PET, PP, Unspecified, PS (HIPS) | Kingfa |
| Knorstan™ | PPE+PS | Technical Polymers, LLC |
| Koattro | Plastomer | LyondellBasell Industries |
| Koblend® | ABS+PC, PS+PE | Polimeri Europa |
| KOCETAL® | Acetal (POM) Copolymer, Nylon 6 | Kolon Plastics, Inc. |
| Kohinor | PVC, Unspecified | Pantasote Polymers, Inc. |
| KOLEFIN® | PP, Unspecified | Kolon Plastics, Inc. |
| KOPA® | Nylon 6, Nylon 66, Nylon, Unspecified | Kolon Plastics, Inc. |
| KOPEL® | PET, TPE | Kolon Plastics, Inc. |
| KOPELEN | PP Copolymer, PP Impact Copolymer, PP Random Copolymer | Honam Petrochemical Corporation |
| KOPET® | PET | Kolon Plastics, Inc. |
| KOPLA ABS | ABS | KOPLA Co., Ltd. |
| KOPLA PA6 | Nylon 6, Nylon 6+ABS, Nylon 6+PE, Nylon 6+PP | KOPLA Co., Ltd. |
| KOPLA PA66 | Nylon 66 | KOPLA Co., Ltd. |
| KOPLA PC | ABS+PC, PBT, PC, PC+PBT | KOPLA Co., Ltd. |
| KOPLA PET | PET | KOPLA Co., Ltd. |
| KOPLA PP | PP, Unspecified | KOPLA Co., Ltd. |
| KOPLEN | PS (EPS) | KAUCUK, a.s. - UNIPETROL GROUP |
| Korad | Acrylic (PMMA) | Polymer Extruded Products, Inc. |
| Korton | ECTFE, PFA, PVDF | Saint Gobain - Norton |
| Kostil® | SAN | Polimeri Europa |
| Kostrate® | PET, Polyester Alloy, TP, Unspecified | Plastic Selection Group, Inc. |
| Kostrate® EDGE | TP, Unspecified | Plastic Selection Group, Inc. |
| KOSYN KTR | SIS+SI | Korea Kumho Petrochemical Co., Ltd. |
| Koylene | PP Homopolymer, PP Random Copolymer | Reliance Industries Limited |
| Koylene ADL | PP Homopolymer | Reliance Industries Limited |
| Koylene ADL-CP | PP Copolymer, PP Impact Copolymer, PP Random Copolymer | Reliance Industries Limited |
| Koylene CP | PP Copolymer, PP Impact Copolymer | Reliance Industries Limited |
| KRALASTIC® | ABS | Nippon A&L Inc. |
| KRASTEN | PS (GPPS), PS (HIPS), PS+PE | KAUCUK, a.s. - UNIPETROL GROUP |
| KRATON® | EP, IR, SBC, SBS, SEBS, SEP, SEPS, SI, SIS, TPE | GLS Thermoplastic Elastomers
Kraton Polymers LLC
|
| K-Resin® | SBC | Chevron Phillips Chemical Company LLC |
| KRYSTALFLEX™ | PUR-Eth,aliphat | Huntsman Corporation |
| KRYSTALGRAN™ | PUR-Eth,aliphat | Huntsman Corporation |
| Kumho ABS | ABS, ABS+PVC | Korea Kumho Petrochemical Co., Ltd. |
| Kumho EP | ABS, ABS+PBT, ABS+PC, AES, SAN, TP, Unspecified | Korea Kumho Petrochemical Co., Ltd. |
| Kumho EPS | PS (EPS) | Korea Kumho Petrochemical Co., Ltd. |
| Kumho KBR | PBR, High Cis, PBR, Low Cis | Korea Kumho Petrochemical Co., Ltd. |
| Kumho KHS | SBR, Emulsion | Korea Kumho Petrochemical Co., Ltd. |
| Kumho KNB | NBR | Korea Kumho Petrochemical Co., Ltd. |
| Kumho KTR | TES | Korea Kumho Petrochemical Co., Ltd. |
| Kumho PS | PS (GPPS), PS (HIPS), PS (IRPS), PS (Specialty) | Korea Kumho Petrochemical Co., Ltd. |
| Kumho SAN | SAN | Korea Kumho Petrochemical Co., Ltd. |
| Kumho SBR | SBR, Emulsion | Korea Kumho Petrochemical Co., Ltd. |
| Kumho SSBR | SBR, Solution | Korea Kumho Petrochemical Co., Ltd. |
| Kunlun | EPDM | Jilin Chemical Group |
| Kuraray CP-Polymer | PVOH | Kuraray America, Inc. |
| Kuraray K-Polymer | PVOH | Kuraray America, Inc. |
| Kuraray Poval® | PVOH | Kuraray America, Inc. |
| Kuraray R-Polymer | PVOH | Kuraray America, Inc. |
| KURARISTER™ | PET | Kuraray America, Inc. |
| KW Plastics | PP, Unspecified, TPO (POE) | KW Plastics |
| KYDEX® | PMMA+PVC | KYDEX, LLC. |
| Kynar Flex® | PVDF | Arkema |
| Kynar® | PVDF | Arkema |
| Kynar® (Rod & Slab) | PVDF | Ensinger-Hyde |
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