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LNP™ ELCRES™ CRX9421

1 of 50 products in this brand
SABIC's Specialties Business LNP ELCRES CRX9421 is a semi-crystalline Polycarbonate (PC) copolymer/Polybutylene Terephthalate (PBT) opaque blend. This grade offers medium flow, UL V0 rating @ 1.5 mm, and high ductility in combination with excellent chemical resistance. It is available for custom coloring and may be an excellent candidate for a wide variety of applications that need improved chemical resistance.

Polymer Name: PC/PBT Alloy

Processing Methods: Injection Molding

Density: 1300.0 - 1300.0 kg/m³

Technical Data Sheet

Knowde Enhanced TDS

Identification & Functionality

Additives Included
Polymer Name
Plastics & Elastomers Functions
Technologies

Features & Benefits

Product Highlights

Improved Chemical Resistance Materials for Medical Enclosures and Housings


With patient safety at the forefront, the healthcare industry is mobilizing to address the concerns of increasing patient infections associated with medical care, known as hospital-acquired infections (HAIs). To help meet this challenge, medical equipment and high touch surfaces in patient care settings are repeatedly wiped down with increasingly aggressive chemical disinfectants.

Chemical Resistance Data - Environmental Stress Cracking (ESC) Performance

Compared to traditional PC, ABS, PBT and co-polyester resins and blends which are potentially incompatible with highly aggressive disinfectants such as quaternary ammonium compounds the new LNP ELCRES CRX resins can help prevent stress cracking and mitigate crack propagation.

SABIC’s LNP ELCRES CRX resins leverage unique copolymer technology to provide improved chemical resistance for healthcare devices and equipment, compared to existing materials used such as PC/ABS, PC/PBT, or co-polyester resins and blends.

 

 

Performance Properties

LNP ELCRES CRX copolymer resins are a new family of polycarbonate copolymers that
can provide improved chemical resistance. These resins are based on unique copolymer
building block blends offering a combination of:

  • Improved Chemical Resistance: Improved chemical resistance to a range of chemical disinfectants
  • Impact Retention: Retention of ductility upon exposure to chemicals.
  • Processability: Potentfoir ahilgh productivity molding and cycle time reduction.
  • Flame Retardancy: V0 rating up to1.5 mm thickness
  • Esthetics: Consistent opaque color and appearance

Applications & Uses

Plastics & Elastomers Processing Methods
Potential Applications
  • Insulin pump
  • Infusion pump
  • Dental chair components
  • Ultrasound monitor
  • Hospital bed components
  • Surgical tools
  • Imaging devices

Properties

Color
Flame Rating
Physical Properties
ValueUnitsTest Method / Conditions
Melt Flow Rate (at 250°C, 5 kgf) ¹¹11.5g/10 minASTM D1238
Melt Volume Rate (at 250°C, 5 kg) ¹¹10cm³/10 minASTM D1238
Specific Gravity ¹¹1.3ASTM D792
Mold Shrinkage (flow) ᶠ ¹¹1 - 1.6%SABIC method
Mold Shrinkage (xflow) ᶠ ¹¹0.9 - 1.6%SABIC method
Mechanical Properties
ValueUnitsTest Method / Conditions
Tensile Stress (Yield, Type I, 50 mm/min) ¹¹44MPaASTM D638
Tensile Stress (Break, Type I, 50 mm/min) ¹¹36MPaASTM D638
Tensile Strain (Yield, Type I, 50 mm/min) ¹¹4%ASTM D638
Tensile Strain (Break, Type I, 50 mm/min) ¹¹59%ASTM D638
Tensile Modulus (at 50 mm/min) ¹¹1985MPaASTM D638
Flexural Modulus (at 1.3 mm/min, 50 mm span) ¹¹1985MPaASTM D790
Flexural Strength (at 1.3 mm/min, 50 mm span) ¹¹72MPaASTM D790
Thermal Properties
ValueUnitsTest Method / Conditions
Coefficient of Thermal Expansion (at -40°C to 40°C, flow) ¹¹0.0000851/°CASTM E831
Coefficient of Thermal Expansion (at -40°C to 40°C, xflow) ¹¹0.0001051/°CASTM E831
Heat Deflection Temperature (at 0.45 MPa, 3.2 mm, Unannealed) ¹¹118°CASTM D648
Heat Deflection Temperature (at 1.82 MPa, 3.2mm, Unannealed) ¹¹66°CASTM D648
Vicat Softening Temperature (Rate B/120) ¹¹132°CASTM D1525
Vicat Softening Temperature (Rate B/50) ¹¹131°CASTM D1525
Impact Properties
ValueUnitsTest Method / Conditions
Izod Impact (Notched, at 23°C) ¹¹590J/mASTM D256
Izod Impact (Notched, at 0°C) ¹¹230J/mASTM D256
Izod Impact (Notched, at -30°C) ¹¹150J/mASTM D256
Izod Impact (Unnotched, at 23°C) ¹¹No breakJ/mASTM D4812
Izod Impact (Unnotched, at -30°C) ¹¹No breakJ/mASTM D4812
Instrumented Dart Impact Total Energy (at 23°C) ¹¹54JASTM D3763
Instrumented Dart Impact Energy (Peak, at 23°C) ¹¹41JASTM D3763
Injection Molding
ValueUnitsTest Method / Conditions
Drying Temperature ⁷120°C
Drying Time ⁷2 - 4Hrs
Maximum Moisture Content ⁷0.02%
Melt Temperature ⁷240 - 255°C
Rear - Zone 1 Temperature ⁷225 - 240°C
Middle - Zone 2 Temperature ⁷230 - 245°C
Front - Zone 3 Temperature ⁷235 - 250°C
Nozzle Temperature ⁷240 - 255°C
Mold Temperature ⁷50 - 70°C
Back Pressure ⁷0.3 - 0.7MPa
Screw Speed ⁷50 - 100rpm
Shot to Cylinder Size ⁷40 - 80%
Vent Depth ⁷0.025 - 0.038mm
Flame Characteristics
ValueUnitsTest Method / Conditions
UL Recognized (94V-0 Flame Class Rating) ᵖ ᵖ1.5mmUL 94
Note
  • ᶠ Measurement meets requirements as specified in ASTM D4496
  • ᵖ UL ratings shown on the technical datasheet might not cover the full range of thicknesses and colors. For details, please see the UL Yellow Card.
  • ⁷ Injection Molding parameters are only mentioned as general guidelines. These may not apply or may need adjustment in specific situations such as low shot sizes, large part molding, thin wall molding and gas-assist molding.
  • ¹¹ The information stated on Technical Datasheets should be used as indicative only for material selection purposes and not be utilized as specification or used for part or tool design.
 

Regulatory & Compliance

Certifications & Compliance

Technical Details & Test Data

Plastics Determination of Resistance to ESC Method

SABIC’s Environmental Stress Cracking (ESC) method evaluates retention of tensile properties vs. control for up to 7 days.

SABIC ESC Method:
per ASTM D543

Strain Level: 1% Strain

Exposure conditions: 23°C

Applications Saturation Method

% Mold Shrinkage Exposure Days SANI-CLOTH® Bleach SANI-CLOTH® HB SANI-CLOTH® AF3 SANI-CLOTH® plus DiverseyOxivir® TB Trichlorosocynuric Acid Cavicide® Caviwipes1 SANI-CLOTH® prime Virex® II 256 Virex® TB CIDEX® OPA Solutions Ethanol
Product     σ y Σ b σ y Σ b σ y Σ b σ y Σ b σ y Σ b σ y Σ b σ y Σ b σ y Σ b σ y Σ b σ y Σ b σ y Σ b σ y Σ b
PC/ABS 0.6 7 ♦♦♦ ♦♦♦ ♦♦♦ ♦♦♦ ♦♦♦ ♦♦♦ ♦♦ ♦♦♦ ♦♦ - - - - ♦♦♦ ♦♦♦ ♦♦♦ ♦♦♦ ♦♦♦ ♦♦♦
PC/PBT 1 7 ♦♦♦ ♦♦ ♦♦♦ ♦♦
CRX5421 Resin 1.3 7 ♦♦
CRX9421 Resin 1.3 7
CRX1414 Resin 0.6 7 ♦♦ ♦♦♦
0.6 3 - - - - - - - - - - - - - - - - ♦♦♦ - - - -
CRX9411 Resin 0.6 7 ♦♦ ♦♦♦
0.6 3 - - - - - - - - - - - - - - - - - - - -

 

Compatibiliy Criteria color rating Tensile stress at yield retention ay (%)

Tensile Elongation at break retention (Eb) %

Compatible (♦) > 90 80 - 139
Marginal (♦♦) 80 - 89 65 - 79
Not compatible (♦♦♦) <79 <64 or >140

Packaging & Availability

Regional Availability
  • Americas
  • Asia
  • Europe
  • North America