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Plastics & Elastomers
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Bakelite® MP 4165

Technical Datasheet | Supplied by Hexion
Bakelite® MP 4165 by Hexion is a melamine-phenolic grade reinforced with glass fiber and inorganic filler. Exhibits good temperature stability, high level of mechanical properties and copper adhesion. Offers high mechanical strength, good dimensional stability and low shrinkage. Designed for processing by compression and injection molding. Bakelite® MP 4165 is recommended for commutators (fuel pumps, actuators, HVAC motors, fan motors, window lift motors, ABS, wiper motors, garden appliances, household appliances, power tools and universal motors). Complies with UL-94 (V0) (MP 4165-8899-S5) flame rating.
Product Type
P or PF (Phenolic / Phenol Formaldehyde Resin)
Product Status
Applications/ Recommended for
  • Gardening > Tools
  • Households products/ Consumer Goods > Powertools (drills...)
  • Automotive > Fuel systems - Fuel pump
  • Electrical markets > Electrical motors
  • Conversion of composites & thermosets > Compression molding
  • Injection molding- thermosets

Bakelite® MP 4165 Properties

Physical Properties

Value & Unit
Test Condition
Test Method
1.81 g/cm³
(at 23°C)
ISO 1183
Apparent density (Molding compound)
0.65 g/cm3
( )
ISO 60
Linear Mold Shrinkage
0.1 %
ISO 2577

Bakelite® MP 4165 Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Temperature of material
80 - 100 °C
Barrel Temperature - Feed Zone
60 - 75 °C
Barrel Temperature - Nozzle Zone
80 - 100 °C
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