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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.

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Chevron Phillips K-Resin® KK38 Styrene-Butadiene Copolymer, Sheet Grade  (discontinued **)
Categories: Polymer; Thermoplastic; Styrene-Butadiene; Styrene-Butadiene Copolymer, SBC

Material Notes: KK38 is an improved extrusion grade SBC designed specifically for superior performance in blends with general purpose polystyrene. It is easily processed by extrusion and gives thermoformed parts with excellent detail on fast production cycles. Thermoformed parts have greater polystyrene acceptance with equivalent processability, very good clarity, excellent toughness, and good stiffness.

Applications: Major applications include thermoformed blister packs, cups and lids, and portion packages.

Processing Recommendations:
Melt Temperature: 216°C maximum. High shear and restrictive type screws tend to degrade the melt. Generally no need to dry resin.

Specification Data: When combined with at least 17% food grade polystyrene to produce articles for food contact, KK38 complies with FDA Regulation 21 CFR 177.1640. EEC Directive 90/128/EEC and all its amendments. USP Class VI-50. UL94HB.

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 PropertiesOriginal ValueComments
Density 1.00 g/ccASTM D792
Melt Flow 9.0 g/10 min
@Load 5.00 kg,
Temperature 200 °C
ASTM D1238
 
Mechanical PropertiesOriginal ValueComments
Hardness, Shore D 58ASTM D2240
Tensile Strength, Yield 13.1 MPaType 1 @ 2 in/min; ASTM D638
Elongation at Break 180 %Type 1 @ 2 in/min; ASTM D638
Flexural Yield Strength 18.6 MPaASTM D790
Flexural Modulus 1.055 GPaASTM D790
Izod Impact, Notched NB
@Thickness 3.17 mm
ASTM D256
Impact Test 28.4 J
@Thickness 3.17 mm
Instrumented Total Energy; @ 150 in/sec impact rate; ASTM D3763
 
Thermal PropertiesOriginal ValueComments
Deflection Temperature at 1.8 MPa (264 psi) 62.0 °CASTM D648
Vicat Softening Point 76.0 °CASTM D1525
Flammability, UL94 HB
 
Optical PropertiesOriginal ValueComments
Transmission, Visible 89 %ASTM D1003
 
Processing PropertiesOriginal ValueComments
Processing Temperature <= 216 °C
 
Compliance PropertiesOriginal ValueComments
FDA Yes
USP Class VI Yes

**
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PCHEVK40 / 20281

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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