ChronoFlex® AL 75D

About
ChronoFlex AL is a family of biodurable aliphatic polycarbonate-based thermoplastic urethanes designed to overcome surface degradation such as stress-induced microfissures. With a long history of reliable performance in both long and short term devices, this medical grade polymer has the versatility to be used across a broad range of applicational areas ranging from oncology and neurology to cardiovascular disease management. These ether-free polyurethane elastomers are biostable and display a low modulus of elasticity, excellent solvent resistance and limited softening in-vivo. These products are adaptable to most standard manufacturing processes and are available in hardnesses ranging from 75 Shore A to 75 Shore D. AdvanSource Biomaterials synthesizes and manufactures medical grade materials offering the ability to tailor physical and mechanical characteristics to support and enhance your end product design. These mechanical characteristic’s, critical to the design and development of medical devices, can incorporate a wide range of physical and chemical properties while maintaining core characteristics such as biodurability and biocompatibility. In most materials, specialized characteristics such as the addition of colorant agents or antimicrobial properties (where applicable) can be added to the polymer to provide a homogenous material and limit secondary processing steps. In addition, radiopaque agents may also be incorporated into the formula to provide additional product enhancements and may contain up to 40%, by weight, of a radiopaque agent thus allowing varied-scale visibility options. With an expanding range of secondary operations including custom solution development, prototype coating capabilities, and project management services, ASB’s expert team of chemists, scientists, engineers and industry professionals assist in every stage of customers’ projects, from concept initiation through full-scale manufacture.&&

Product Description
GenericPC+TPU
Material StatusCommercial: Active
FeaturesGood Rigidity,ADCF,Biocompatible,Aliphatic series,Solvent resistance,High ESCR
AvailabilitysNorth America

Technical Data
PHYSICALNominal valueUnitTest method
Density1.10 to 1.40g/cm³ASTM D792
Melt Flow Rate
205℃,3.26kg2.0 to 26g/10minASTM D1238

MECHANICALNominal valueUnitTest method
Shore hardness
Shaw’s D75 ASTM D2240
tensile strength ASTM D638
fracture20.7 to 55.2MPaASTM D638
50% strain20.7 to 55.2MPaASTM D638
100% strain20.7 to 55.2MPaASTM D638
Tensile strain
fracture100 to 300%ASTM D638

Process Conditions
injectionNominal valueUnitTest method
Drying temperature – hot air dryer71 to 93°C
Drying time – hot air dryer3.0 to 4.0hr
Dew Point-40°C
Recommended maximum moisture content0.050%

Notes
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