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Wepuran casting compounds on polyurethane resin basis (PUR)


-good resistance to water, moisture, lyes, acids and all types of chemicals
-many casting compounds are available in different mixing ratios (Indices such as /41 indicate the mixing ratio, in this case 4:1 parts by weight), so that a broad spectrum of viscosity and hardness/elasticity adjustments is available
-excellent dielectric properties
-good mechanical resistance
                                                    -very low heat development and shrinkage pressure
                                                    -casting compounds for potting electronic components, mini and print transformers, 
                                                      induction, high-frequency and transformer coils and much more; the elastic adjustments 
                                                      are particularly suitable for casting sensitive components (glass diodes, sensors, ferrite 
                                                      cores, etc.) as their elasticity enables the reduction of material tensions in the event of
                                                      thermal shock; if the high temperature resistance of silicone rubber casting compounds is
                                                      not required, elastic casting compounds based on polyurethane resin are a cost-saving 
                                                      alternative



VU 4444/31 SB-WB
Base: Polyurethane resin (PUR)

Black
Corresponds to the best flame class V-0 in accordance with UL 94
Elastic
Extremely resistant to weathering and UV radiation
Good adhesion
Low heat development and low shrinkage pressure
Provides excellent contrast to embedded LEDs


VU 4451/51 SB
Base: Polyurethane resin (PUR)

Blue
Flexible
Free of halogen-containing fire protection agents
Low heat generation and low shrinkage pressure while curing
Self-extinguishing according to UL 94 V-0



MV 4414 "DISTINCTIVE" series
for a unique and sophisticated appearance of potted parts
special pigments make for exceptionally distinctive colours that attract attention
based on the Wepuran casting compound VU 4457/61 SB (Index SB = hardly flammable)



VU 4452
Base: Polyurethane resin (PUR)

Blue
High elasticity
High temperature stability (insulation class E = 120º C)
Particularly suitable for use in sensor technology



VU 4452/41 SV-HF
Base: Polyurethane resin (PUR)

Blue
Free of halogen flame retardants
High temperature resistance (insulation class E = 120º C)
Low heat development and minimum shrinkage pressure while curing



VU 4453
Base: Polyurethane resin (PUR) / Polybutadiene

Extremely low water absorption
High elasticity
Particularly suited for sensitive electronic components (e. g. sensors, glass diodes, etc.)
Very low heat development and low shrinkage pressure in the curing phase



VU 4456
Base: Polyurethane resin (PUR)

Blue
Good flow properties
High mechanical strength
Low shrinkage pressure
Solvent-free



VU 4457
Base: Polyurethane resin (PUR)

“allround” casting compounds for many different application fields
High chemical resistance
High hardness and mechanical resistance
Solvent-free
VU4457/61 SB corresponds to the best flame class V-0 per UL 94



VU 4459/41 SV-HF
Base: Polyurethane resin (PUR)

Best flame class UL 94 V-0
Blue
Excellent mechanical resistance
Free of halogen containing fire protection agents
Low heat generation and low shrinkage pressure while curing



VU 4490/31
particularly distinguished by their high hardness and mechanical strength
high yellowing resistance, thus particularly suited for application in optoelectronics
the smooth white surface lends the cast object a particularly high-grade appearance
VU 4490/31 K: owing to the accelerated curing (Index K = catalysed) processing possible only in mixing and dispensing units