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Amatrium Materials AI
DSM Biomedical PurSil® 35 Thermoplastic Silicone Polyether Polyurethane (TSPU)
Categories: Polymer; Thermoplastic; Polyurethane, TP; Silicone Polyurethane, Ether Based

Material Notes: A novel copolymer that is strong yet flexible with proven biocompatibility and biostability Combining the benefits of both silicone elastomers and polyether urethanes, PurSil® TSPU has exceptional stability.

Flexible PurSil® TSPU is comparable in tensile strength to traditional polyether urethanes with added biostability from the silicone component. It is adaptable to various fabrication techniques to accommodate many different device shapes and can be extruded, injection or compression molded, solvent bonded, dipped coated and sprayed. This highly flexible polymer is available in aromatic and aliphatic versions.

Widely Used Because of its outstanding flexibility, oxidative stability and thromboresistance, PurSil® TSPU is used in a wide range of medical devices, including ophthalmic, anastomotic, and continuous glucose monitoring.

Tailor Made PurSil® TSPU can be enhanced with SME® technology to incorporate end groups such as fluorocarbon and/or polyethylene oxide (silicone end groups are standard). This eliminates the need for additional surface processing steps after the device component is fabricated.

Summary of Product Benefits

  • Biostable and biocompatible
  • Adaptable to many different processing techniques
  • Excellent mechanical properties relative to conventional silicone elastomers
  • Thromboresistant
  • Enhanced with SME® technology utilizing various surface modifying end groups
  • Comprehensive FDA Master File

Grade denotes silicone content (%)

Information provided by DSM Biomedical.

Available Properties
  • Specific Gravity, ASTM D792
  • Linear Mold Shrinkage, ASTM D955, 4.0 inch Disk
  • Linear Mold Shrinkage, Transverse, ASTM D955, Flame Bar
  • Melt Flow, ASTM D1238
  • Hardness, Shore A, ASTM D2240
  • Tensile Strength, Ultimate, ASTM D1708
  • Tensile Stress at Strain, ASTM D1708
  • Tensile Stress at Strain, ASTM D1708
  • Tensile Stress at Strain, ASTM D1708
  • Elongation at Break, ASTM D1708
  • Flexural Strength, ASTM D790, at 5% deflection
  • Flexural Modulus, 1% Secant, ASTM D790
  • Tear Strength, ASTM D624, Die 'C'
  • Taber Abrasion, mg/1000 Cycles, ASTM D1044, H-18 Wheel
  • Compression Set, ASTM D395, 22 hours
  • Dielectric Constant, ASTM D150
  • Dielectric Strength, ASTM D149
  • CTE, linear, ASTM E-831
  • Vicat Softening Point, ASTM D1525
  • Glass Transition Temp, Tg, ASTM D3418
  • Processing Temperature, Optimum Extrusion Conditions
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Manufacturer Notes:
DSM Biomedical (Former Polymer Technology Group)

Category Notes

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