Siloxane Masterbatch MB50-004

Category: Siloxane, UHMW , Siloxane Polymer (UHMW)
Manufacturer: Multibase, A Dow Corning Company
Trademark: Siloxane Masterbatch
Fillers: -
Ports: Qinzhou, Shekou, Shanghai, Ningbo
Delivery Terms FOB, CIF, DAP, DAT, DDP
PDF: IaDfLG_Siloxane-Masterbatch-MB50-004.pdf
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Ultra-high molecular weight siloxane polymer.

DOW CORNING MB50-004 Masterbatch is a pelletized formulation containing 50% of an ultra-high molecular weight siloxane polymer dispersed in high-impact polystyrene. It is designed to be used as an additive in polystyrenecompatible systems to impart benefits such as processing improvements and modification of surface characteristics.

Liquid siloxane plastic additives have been used for several years to improve the lubricity and flow of thermoplastics. They are effective in this role although some difficulties have been experienced in the incorporation of liquids into thermoplastic melts without the use of specialized equipment. It has also been difficult to produce masterbatches with greater than 20% liquid siloxane because of processing difficulty and bleed problems.

The DOW CORNING® MB Series Masterbatches address these problems by supplying a high concentration of an ultra-high molecular weight siloxane as a dispersion in a dry pellet form in a variety of thermoplastics.

BENEFITS
When added to polystyrene or similar thermoplastics at 0.1% to 1.0%, improved processing and flow of the resin is expected, including better mold filling, less extruder torque, internal lubrication, mold release and faster throughput. At higher addition levels, 1% to 5% siloxane, improved surface properties are expected, including lubricity, slip, lower coefficient of friction, and greater mar and abrasion resistance.

The DOW CORNING MB Series Masterbatches are expected to give improved benefits compared to conventional lower molecular weight siloxane additives, e.g., less screw slippage, improved release, a lower coefficient of friction, fewer paint and printing problems, and a broader range of performance capabilities.

LIMITATIONS
This product is neither tested nor represented as suitable for medical or pharmaceutical uses.

HOW TO USE
DOW CORNING MB Series Masterbatches may be processed in the same way as the thermoplastics on which they are based. Sufficient DOW CORNING MB50-004 Masterbatch should be blended with virgin polymer pellets to give the desired siloxane level in the final product. DOW CORNING MB50-004 Masterbatch pellets can be added during compounding in a single screw extruder or added at the feed hopper during injection molding or extrusion.
General Information
Additive
  • Silicone lubricant
  • demoulding
  • slip agent
Features
  • Kosher certification
  • Ultra high molecular weight
  • smoothness
  • Excellent printability
  • Workability, good
  • Sprayable
  • Good processing stability
  • Good wear resistance
  • Scratch resistance
  • Lubrication
  • Compliance of Food Exposure
  • Good demoulding performance
  • Excellent appearance
Uses
  • Composite
  • Mixing
Agency Ratings
  • BgVV Unspecified Rating
  • FDA 21 CFR 177.1640
Appearance
  • White-like
Forms
  • Particle
Processing Method
  • Composite
  • Extrusion
  • Injection molding
Additional Information
Siloxane Content: 50%Organic Resin: High Impact Polystyrene, MI3.5Suggested Use Level (0.1 to 5% siloxane): 0.2 to 10%
InjectionNominal ValueUnit
Drying Temperature 100°C
Drying Time 2.0 - 3.0hr
ExtrusionNominal ValueUnit
Drying Temperature 100°C
Drying Time 2.0 - 3.0hr
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