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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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Kuraray SEPTON® A3 Hot Melt Adhesive
Categories: Polymer; Adhesive; Thermoplastic; Elastomer, TPE; Thermoplastic Elastomer, Melt-Processible Rubber

Material Notes: Description: SEPTON® is a series of high performance thermoplastic rubbers developed by Kuraray Co. Ltd. Using its isoprene technology. SEPTON® resins are a series of hydrogenated styrenic block copolymers, which exhibit rubber-like properties over a wide range of temperatures. SEPTON®'s characteristics include:
  • Excellent Mechanical Properties
  • Good Weatherability
  • Excellent Low Temperature Properties
  • Excellent Electrical Properties
  • Superior Heat Resistance
  • Excellent Chemical Resistance
  • Low Toxicity

SEPTON® grades are available with a range of Shore A hardness of 35-95 and tensile strengths of 290-5600 psi. SEPTON® resins are highly extendible with fillers, resins and oils, which allows formulation of a variety of hardness for adhesives, sealants and various compounds. As an additive, SEPTON® resins can be used to improve toughness of a variety of plastics. Several SEPTON® grades have U.S. FDA and USP Class VI approval.

SEPTON® has a versatile series of grades which can be used in numerous processing techniques such as blow molding, injection molding, extrusion, hot melt and solution coatings. SEPTON® resins are thermoplastics therefore, the scrap is recyclable without significant loss of properties.

When blended with a tackifier and a process oil, SEPTON® polymers provide hot melt adhesives having excellent heat and weather resistance.

SEPTON® Solubility:

  • Partial to Non-Soluble in: Ethyl Acetate, MEK, Methanol, Ethanol, Acetone, Water
  • Soluble in: Petroleum Ether, Toluene, Benzene, Hexane and Cyclohexane

Tackifiers Compatible with SEPTON®:

  • Rubber Phase: Acyclic Saturated Hydrocarbon resins, Hydrogenated Terpene resins, Petroleum resin and Hydrogenated Rosin resin
  • Styrene Phase: Aromatic resins and Styrenic resins

Formulation (parts by weight): SEPTON® 2063 - 100, Acyclic Saturated Hydrocarbon Resin - 200, Paraffinic Process Oil - 100

Information provided by The Kuraray Group.

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Physical PropertiesOriginal ValueComments
Brookfield Viscosity 5600 cPmelt viscosity
 
Mechanical PropertiesOriginal ValueComments
Peel Strength 0.470 kN/mto polyethylene, 180° peel test, rate of peel = 300mm/min at 25°C
 0.72594 kN/mto stainless steel, 180° peel test, rate of peel = 300mm/min at 25°C
 
Descriptive Properties
Cohesion, Static Shear 105 minutes
Rolling Ball Tack Test22 ballsmeasured at 25°C

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Kuraray SEPTON® A1 Hot Melt Adhesive

PKUR022 / 49411

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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