Chevron Phillips K-Resin® KR99HG Styrene-Butadiene Copolymer, Injection Molding Grade

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Chevron Phillips K-Resin® KR99HG Styrene-Butadiene Copolymer, Injection Molding Grade (discontinued **)
Categories:	Polymer; Thermoplastic; Styrene-Butadiene; Styrene-Butadiene Copolymer, SBC
Material Notes:	Styrene-Butadiene Copolymer Customer Benefits: This SBC is easily processed by injection molding. Molded parts provide excellent part detail on fast production cycles. Molded parts have excellent clarity, good toughness, excellent stiffness, high surface gloss, and can be blended with Polystyrene. Applications: Garment Hangers Processing Recommendations: Melt Temperature: 232°C, maximum. Screw: plasticizing type injection molder more desirable than plunger type molder. Generally no need to dry resin. Data provided by Chevron Phillips Chemical Company LP. 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
Water Absorption	0.090 %	ASTM D570
Melt Flow	7.5 g/10 min @Load 5.00 kg, Temperature 200 °C	ASTM D1238

Mechanical Properties	Original Value	Comments
Hardness, Shore D	65	ASTM D2240
Tensile Strength, Yield	26.0 MPa	2 in per min; ASTM D638; Test specimens were injection molded by ASTM D1897.
Elongation at Break	160 %	2 in per min; ASTM D638; Test specimens were injection molded by ASTM D1897.
Flexural Yield Strength	34.0 MPa	Test specimens were injection molded by ASTM D1897; ASTM D790
Flexural Modulus	1.413 GPa	Test specimens were injection molded by ASTM D1897; ASTM D790
Izod Impact, Notched	0.410 J/cm @Thickness 3.17 mm	ASTM D256
Impact Test	29.7 J @Thickness 3.17 mm	Instrumented Total Energy; @ 150 in/sec impact rate; ASTM D3763

Thermal Properties	Original Value	Comments
Deflection Temperature at 1.8 MPa (264 psi)	73.0 °C	ASTM D648
Vicat Softening Point	87.0 °C	ASTM D1525

Optical Properties	Original Value	Comments
Transmission, Visible	90 %	ASTM D1003

Processing Properties	Original Value	Comments
Processing Temperature	<= 232 °C

**
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PCHEVK75 / 20288

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