Royalcast® 23790M

Category: PUR-Ester/MDI , Polyurethane (Polyester, MDI)
Manufacturer: Chemtura
Trademark: Royalcast®
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: eh25Zk_Royalcast-23790M.pdf
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ROYALCAST 23790M is a high performance polyester based, MDI terminated liquid urethane prepolymer. When cured with HQEE, this member of the ROYALCAST family produces high quality vulcanizates in the 80 Shore D hardness range.

These tough, high quality elastomers are characterized by:
  • High Tear Strength
  • Good Dynamic Properties
  • Low Compression Set
  • High Impact Strength

ROYALCAST 23790M, at processing temperature, is low in viscosity and has a working life suitable for machine casting procedures.
General Information
Features
  • Good Impact Resistance
  • Good Tear Strength
  • Good Toughness
  • Low Compression Set
  • Low Viscosity
Forms
  • Liquid
Processing Method
  • Casting
HardnessNominal ValueTest Method
Durometer Hardness (Shore D)80ASTM D2240
MechanicalNominal ValueUnitTest Method
Flexural Modulus 2240MPaASTM D790
Flexural Strength 73.3MPaASTM D790
Taber Abrasion Resistance (5000 Cycles, 1000 g, H-18 Wheel)350mgASTM D1044
FilmsNominal ValueUnitTest Method
Trouser Tear Resistance 41.2N/mmASTM D1938
ElastomersNominal ValueUnitTest Method
Tensile Strength 51.7MPaASTM D412
Tensile Elongation (Break)90%ASTM D412
Tear Strength
    -- 1214kN/mASTM D624
    Split 28kN/mASTM D470
ThermosetNominal ValueUnit
Thermoset Components
    Hardener Mix Ratio by Weight: 31
    Resin Mix Ratio by Weight: 100
Pot Life 3.0min
Post Cure Time (100°C)16hr
Uncured PropertiesNominal ValueUnit
Curing Time (121°C)0.50hr
Note Message
1 .Die C
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