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Chevron Phillips K-Resin® BK12 Styrene-Butadiene Copolymer, Injection Molding Grade  (discontinued **)

Category Polymer , Thermoplastic , Styrene-Butadiene , Styrene-Butadiene Copolymer, SBC
Manufacturer
Trade Name
Port Ningbo port,China
Trade Terms FOB, CFR, CIF
Payment Terms L/C, T/T, Western Union
Download PDF Chevron Phillips K-Resin® BK12 Styrene-Butadiene Copolymer, Injection Molding Grade  (discontinued **).pdf
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Material Notes:
Styrene-Butadiene CopolymerCustomer Benefits: BK12 is an SBC consisting of KR01 grade with a mold release added for easier processing. BK12 molded parts give excellent detail on fast production cycles, and are easily processed by injection molding. This resin can be tinted or colored in a variety of transparent and opaque shades. Compared to KR01, BK12 offers improved mold release with the same injection molding process conditions, and equivalent molded part performance and properties. Molded parts offer excellent clarity, good toughness, good stiffness, and high surface gloss.Applications: Major applications include displays, medical devices, molded parts with integral hinges, housings, and toys.Processing Recommendations:Injection Molding: Minimum melt temperature between 193-232°C necessary to permit mold fill. Minimum injection pressure required to fill the cavity. Maximum back pressure of 0.3 MPa. Drying: Generally, no need to dry resin.Specification Data: FDA Regulation 21 CFR 177.1640. Suitable for contact with non-fatty foods. [Parts over 0.200 inches thick, for alcoholic beverages, or for high temperature food use (hot filled over 150°F or heat sterilized over 212°F) would require additional testing]. USP Class VI-50Data provided by Chevron Phillips Chemical Company LP.
Physical Properties Metric English Comments
Density 1.01 g/cc
0.0365 lb/in³
ASTM D792
Melt Flow 8.0 g/10 min

@Load 5.00 kg,
Temperature 200 °C
8.0 g/10 min

@Load 11.0 lb,
Temperature 392 °F
ASTM D1238
Mechanical Properties Metric English Comments
Hardness, Shore D 75
75
ASTM D2240
Tensile Strength, Yield 30.0 MPa
4350 psi
Type 1 @ 2 in/min; ASTM D638
Elongation at Break 20 %
20 %
Type 1 @ 2 in/min; ASTM D638
Flexural Yield Strength 44.0 MPa
6380 psi
ASTM D790
Flexural Modulus 1.482 GPa
214.9 ksi
ASTM D790
Impact Test 0.700 J

@Thickness 3.17 mm
0.516 ft-lb

@Thickness 0.125 in
Instrumented Total Energy; @ 150 in/sec impact rate; ASTM D3763
Thermal Properties Metric English Comments
Deflection Temperature at 1.8 MPa (264 psi) 77.0 °C
171 °F
ASTM D648
Vicat Softening Point 93.0 °C
199 °F
ASTM D1525
Optical Properties Metric English Comments
Transmission, Visible 90 - 95 %
90 - 95 %
ASTM D1003
Processing Properties Metric English Comments
Melt Temperature 193 - 232 °C
379 - 450 °F
Injection
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