Hydrogenated Styrenic Thermoplastic Elastomer (SEBS) Tuftec™ M1943

Asahi Kasei Tuftec™ M1943 is a maleic anhydride modified SEBS. It enables modification of engineering plastics such as polyamide (PA) or polyester (PEs). It can be used as an adhesive to metals and thermoplastic polyurethane (TPU) . It is also used as a compatibilizer of PS or olefinic resins and polar resins.


Physical Form

  • Supplied as a dusted, dence pellet

Features and Benefits

  • Excellent impact modifier for PA or PEs
  • TPU Modifier
  • 2K molding
  • Adhesion to metal or polar resin


  • FDA 21 CFR FCN28
  • Regulation (EU) No 10/2011


Property Test Method Unit Value
Specific Gravity ISO 1183 g/cm3 0.90
MFR 230°C, 2.16kg Load ISO 1133 g/10 min 8.0
Durometer Type A
ISO 7619 °Shore A 67
Tensile Strength
Dumbbell: Type 1A 500 mm/min
ISO 37 MPa 11.0
Dumbbell: Type 1A 500 mm/min
ISO 37 % 650
300% Tensile Stress ISO 37 MPa 2.9
Styrene / Ethylene-Butylene Ratio Asahi Kasei Method 20/80
Acid Value Titration Method mgCH3ONa/g 10

Please note that all data and values are given as typical results obtained with the indicated test methods for purposes of basic reference in grade selection only, and not as any product specification or warranty of any nature, and are subject to change without notice.

Please refer to Terms and Conditions and Privacy Policy


We, Asahi Kasei Group, request that customers who are considering using our products in medical, pharmaceutical, cosmetic and other related applications (hereinafter collectively called “Medical Applications”) shall contact us and confirm our policy on Medical Applications in advance. Information herein regarding conformity to certain laws and regulations are as of January, 2015. Please consult with us for the latest status. We make no guarantees or warranties, express or implied, concerning the suitability of our products for use in Medical Applications. It is not our responsibility to determine if our products are safe, lawful, and technically suitable for intended applications.