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TDS - XK40
For more information and technical
assistance contact:
Chevron Phillips Chemical Company LP
P.O. Box 4910
The Woodlands, TX 77387-4910
800.231.1212
XK40
K-ResinŽ Styrene-Butadiene Copolymers (SBC)
Customer Benefits
  • Excellent Combination of Clarity and Toughness
  • Good Formability
  • High Surface Gloss
    Typical Applications
  • Thermoformed Blister Packs
  • Portion Packages
  • Cups and Lids
    • Nominal Physical Properties (1) Condition English SI Method
      Specific Gravity - 1.02 g/cc 1.02 g/cc ASTM D792
      Melt Flow Rate 200°C/5Kg 10.0 g/10 min 10.0 g/10 min ASTM D1238
      Tensile Yield Strength (2) 2.0 in/min 2240 psi 15.4 MPa ASTM D638
      Tensile Elongation @ Break (2) 2.0 in/min 339% 339% ASTM D638
      Flexural Modulus (3) 1.0 in/min 122800 847 Mpa ASTM D790
      Flexural Yield Strength (3) 1.0 in/min 3535 psi 24.4 Mpa ASTM D790
      Deflection Temperature Under Load (DTUL) 264 psi (1.8 MPa) 117 °F 47 °C ASTM D648
      Instrumented Impact Total Energy (4) 73 °F 380 inˇlbs 43 J ASTM D3763
      Hardness, Shore D - 60 60 ASTM D2240
      Vicat Softening Point - 145 °F 63 °C ASTM D1525
      Light Transmission - 90 % 90 % ASTM D1003
    1. The nominal properties herein are typical of the product but do not reflect normal testing variance and therefore should not be used for specification purposes. Values are rounded.
      2.
    2. Type 1 @ 2 in/min (50 mm/min)
      3.
    3. 0.125 in (3.2 mm) specimen @ 0.5 in/sec (1.27 cm/min)
      4.
    4. 0.125 in (3.2 mm) specimen @ 150 in/sec (381 cm/sec) impact rate
      5.
    5. 0.125 in (3.2 mm) specimen
      6.
    MEETS THESE IMPORTANT REQUIREMENTS:
  • K-ResinŽ SBC grade XK40, as shipped by Chevron Phillips Chemical Company LP, meets the specifications of the United States FDA Food Packaging Regulation 21 CFR 177.1640 (polystyrene and rubber modified polystyrene).  By virtue of this compliance, K-ResinŽ XK40 may be used as a component of articles for use in contact with food.  There are no regulatory food type or temperature restrictions on this resin, as defined under 21 CFR 176.170 (c).
  • EEC Directive 2002/72/EEC and all its amendments.
  • K-ResinŽ SBC grade XK40 is produced in an ISO 9001:2000 certified plant.
    • MSDS #248900 Revision Date October, 2008
    Before using this product, the user is advised and cautioned to make its own determination and assessment of the safety and suitability of the product for the specific use in question and is further advised against relying on the information contained herein as it may relate to any specific use or application. It is the ultimate responsibility of the user to ensure that the product is suited and the information is applicable to the user's  specific application. Chevron Phillips Chemical Company LP does not make, and expressly disclaims, all warranties, including warranties of merchantability or fitness for a particular purpose, regardless of whether oral or written, express or implied, or allegedly arising from any usage of any trade or from any course of dealing in connection with the use of the information contained herein or the product itself. The user expressly assumes all risk and liability, whether based in contract, tort or otherwise, in connection with the use of the information contained herein or the product itself. Further, information contained herein is given without reference to any intellectual property issues, as well as federal, state or local laws which may be encountered in the use thereof. Such questions should be investigated by the user.
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