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VESTAKEEP® DC4420 G

Technical Datasheet | Supplied by Evonik
VESTAKEEP® DC4420 G by Evonik is a white pigmented, high viscosity, high performance polyether ether ketone (PEEK) grade (supplied as cylindrical pellets). It is a biomaterial exhibiting superior mechanical-, thermal- and chemical resistance. Possesses outstanding wear comfort, excellent biostability and shock absorption capability. It can be processed by common melt processing techniques like injection molding and extrusion. Provides an innovative, metal-free solution in dental sector for applications like removable & fixed dentures (providing gentleness and benefit to antagonist as well as to jaw joint) and crowns & bridges suited for permanent contact with mucous membrane (it doesn’t have an unpleasant sensation of hot/ cold). Large & small bridges or partial dentures formed possess the advantage of being light and tasteless. VESTAKEEP® DC4420 G complies with biocompatibility test following ISO standards (ISO 10993-03, ISO 10993-05, ISO 10993-10, ISO 10993-10, ISO 10993-11, ISO 10993-11 and ISO 10993-18) and USP Class VI.
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Product Type
PK (Polyketone) > PEEK
CAS Number
29658-26-2
Physical Form
Pellets

VESTAKEEP® DC4420 G Properties

Physical Properties

Value & Unit
Test Condition
Test Method
Density
1.49 g/cm³
(23°C) 
ISO 1183
Melt Volume Flow Rate (MVR)
9.5 cm³/10min
(380°C/5kg) 
ISO 1133
Water Absorption
0.4 %
(Saturation) 
ISO 62

VESTAKEEP® DC4420 G Processing Guidelines

Injection Molding Properties

Value & Unit
Test Condition
Test Method
Processing (Melt) Temp
380 - 400 °C
Mold Temperature
160 - 200 °C
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