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USP Class VI Adhesives
USP Class VI Approved Adhesives for Medical Device Applications
Master Bond’s biocompatible adhesives are designed to meet the needs of medical device manufacturers. Compounds withstand various types of sterilization methods.

Chevron Phillips K-Resin® BK12 Styrene-Butadiene Copolymer, Injection Molding Grade  (discontinued **)
Categories: Polymer; Thermoplastic; Styrene-Butadiene; Styrene-Butadiene Copolymer, SBC

Material Notes: Styrene-Butadiene Copolymer

Customer 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-50

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.

Vendors: No vendors are listed for this material. Please click here if you are a supplier and would like information on how to add your listing to this material.
 
Physical PropertiesMetricEnglishComments
Density 1.01 g/cc0.0365 lb/in³ASTM 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 PropertiesMetricEnglishComments
Hardness, Shore D 7575ASTM D2240
Tensile Strength, Yield 30.0 MPa4350 psiType 1 @ 2 in/min; ASTM D638
Elongation at Break 20 %20 %Type 1 @ 2 in/min; ASTM D638
Flexural Yield Strength 44.0 MPa6380 psiASTM D790
Flexural Modulus 1.482 GPa214.9 ksiASTM 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 PropertiesMetricEnglishComments
Deflection Temperature at 1.8 MPa (264 psi) 77.0 °C171 °FASTM D648
Vicat Softening Point 93.0 °C199 °FASTM D1525
 
Optical PropertiesMetricEnglishComments
Transmission, Visible 90 - 95 %90 - 95 %ASTM D1003
 
Processing PropertiesMetricEnglishComments
Melt Temperature 193 - 232 °C379 - 450 °FInjection
 
Compliance PropertiesMetricEnglishComments
FDA YesYesSee notes for details.
USP Class VI YesYes

**
Materials flagged as discontinued () are no longer part of the manufacturer’s standard product line according to our latest information. These materials may be available by special order, in distribution inventory, or reinstated as an active product. Data sheets from materials that are no longer available remain in MatWeb to assist users in finding replacement materials.

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PCHEVK10 / 20275

USP Class VI Adhesives
USP Class VI Approved Adhesives for Medical Device Applications
Master Bond’s biocompatible adhesives are designed to meet the needs of medical device manufacturers. Compounds withstand various types of sterilization methods.

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