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Zinc Stearate Masterbatch Polyvel’s RZ40 release aid masterbatch contains zinc stearate and is used in injection molding high impact polystyrene, ABS, nylon, and PBT. Polyvel RZ40 functions at low levels to reduce adhesion between mold surface and polymer.
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Recommended Use Levels (%)
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High impact polystyrene (HIPS)
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1-2
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ABS
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1-2
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Nylon
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1-2
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PBT
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1-2 Polyvel RZ40 is not recommended for use in crystal styrene if clarity is an issue.
Typical Physical Properties
Physical Form
Translucent pellet
Additive
Zinc stearate
% Active Additive
40%
Softening Point
94°C
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