Chevron Phillips K-Resin® BK18 Styrene-Butadiene Copolymer

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Chevron Phillips K-Resin® BK18 Styrene-Butadiene Copolymer (discontinued **)
Categories:	Polymer; Thermoplastic; Styrene-Butadiene; Styrene-Butadiene Copolymer, SBC
Material Notes:	Characteristics: Good flexibility Good impact resistance Good clarity Good mold release Applications: Toys Overcaps Consumer products Information provided by Chevron Phillips. Ineos Styrolution acquired the K-Resin® product line from Chevron Phillips Chemical Company in 2016. This grade was previously discontinued.
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Physical Properties	Original Value	Comments

Density	1.01 g/cc	ASTM D792
Melt Flow	7.5 g/10 min	Condition G; ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Shore D	61	ASTM D2240
Tensile Strength, Yield	19.0 MPa	2 in/min, specimen injection molded by ASTM method D1897; ASTM D638
Elongation at Break	259 %	2 in/min, specimen injection molded by ASTM method D1897; ASTM D638
Flexural Yield Strength	29.7 MPa	Specimen injection molded by ASTM method D1897; ASTM D790
Flexural Modulus	1.263 GPa	Specimen injection molded by ASTM method D1897; ASTM D790
Izod Impact, Notched	34.5 J/m @Thickness 3.17 mm	ASTM D256
Impact Test	25.9 J	Instrumented; ASTM 3763

Thermal Properties	Original Value	Comments
Deflection Temperature at 1.8 MPa (264 psi)	53.0 °C	Fiber stress; ASTM D648
Vicat Softening Point	69.0 °C	ASTM D1525

Optical Properties	Original Value	Comments
Transmission, Visible	90.4 %

Processing Properties	Original Value	Comments
Melt Temperature	380 - 450 °F

**
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PCHEVD100 / 20676

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