Röhm ACRYLITE® MD™ L40 Acrylic Polymer For Medical Diagnostics

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Röhm ACRYLITE® MD™ L40 Acrylic Polymer For Medical Diagnostics (discontinued **)
Categories:	Polymer; Thermoplastic; Acrylic (PMMA); Acrylic, Optical Grade, Molded; Acrylic, UV Stabilized, Molded
Material Notes:	ACRYLITE® MD™ L40 acrylic polymer is an amorphous thermoplastic molding compound based on polymethyl methacrylate (PMMA) for the medical diagnostic industry. Typical properties of ACRYLITE® MD™ acrylic polymers are exceptional ultra-violet light transmittance (UVT), exceptional optical clarity, and good dimensional stability for controlled fluid flow. The special properties of ACRYLITE MD™ L40 polymer are highest melt flow rate, UV light transmitting, low heat resistance, and medium levels of lubricant. Application: Used for injection molded thin-wall medical devices requiring UV spectroscopy for fluid evaluation. Information Provided by Evonik CYRO. The former Evonik Methacrylates business has been sold to Röhm (Roehm) GmbH.
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Physical Properties	Metric	English	Comments

Specific Gravity	1.19 g/cc	1.19 g/cc	ASTM D792
Bulk Density	0.660 g/cc	0.0238 lb/in³	ASTM D1895
Water Absorption at Saturation	0.30 %	0.30 %	ASTM D570
Linear Mold Shrinkage	0.0030 - 0.0060 cm/cm	0.0030 - 0.0060 in/in	ASTM D955
Melt Flow	26 g/10 min @Load 3.80 kg, Temperature 230 °C	26 g/10 min @Load 8.38 lb, Temperature 446 °F	ASTM D1238

Mechanical Properties	Metric	English	Comments
Hardness, Rockwell M	84	84	ASTM D785
Tensile Strength at Break	60.7 MPa	8800 psi	ASTM D638
Elongation at Break	2.0 - 4.0 %	2.0 - 4.0 %	ASTM D638
Elongation at Yield	2.0 - 4.0 %	2.0 - 4.0 %	ASTM D638
Tensile Modulus	3.24 GPa	470 ksi	ASTM D638
Flexural Strength	97.9 MPa	14200 psi	ASTM D790
Flexural Modulus	3.03 GPa	440 ksi	ASTM D790
Izod Impact, Notched	0.192 J/cm @Temperature 23.0 °C	0.360 ft-lb/in @Temperature 73.4 °F	1/4" bar; ASTM D256

Thermal Properties	Metric	English	Comments
CTE, linear	72.0 µm/m-°C @Temperature 0.000 - 156 °C	40.0 µin/in-°F @Temperature 32.0 - 312 °F	ASTM D696
Deflection Temperature at 1.8 MPa (264 psi)	73.9 °C @Thickness 6.35 mm	165 °F @Thickness 0.250 in	Annealed; ASTM D648
Vicat Softening Point	82.2 °C	180 °F	ASTM D1525

Optical Properties	Metric	English	Comments
Haze	<= 1.0 %	<= 1.0 %	ASTM D1003
Yellow Index	<= 1.0 %	<= 1.0 %	ASTM D1925
Transmission, Visible	92 %	92 %	ASTM D1003
UV Transmittance	>= 87.7 %	>= 87.7 %	340 nm

Processing Properties	Metric	English	Comments
Middle Barrel Temperature	210 - 243 °C	410 - 470 °F
Melt Temperature	210 - 243 °C	410 - 470 °F
Mold Temperature	26.7 - 71.1 °C	80.0 - 160 °F
Drying Temperature	71.1 °C	160 °F
Dry Time	3 - 4 hour	3 - 4 hour

**
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PCYR00052 / 101041

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