SynChem – Resins & Varnishes Synthite ER-41 Polyurethane enamel varnish

Synthite ER-41 is a red, fast drying enamel varnish.

Synthite ER-41 has the following excellent properties:

  • very fast drying
  • excellent chemical resistance
  • oil and moisture resistant
  • hard, smooth, abrasion resistant film
  • excellent adhesion
  • transformer oil resistance ASTM D 115-55
  • corrosion and humidity resistance
Download datasheet

Application

Synthite ER-41 is mainly applied in:

  • stator coils
  • transformer coils
  • armature coils
  • bus bars
  • field coils
  • control coils
  • collector rings
  • interior of oil tanks

Standards

  • Class H (180 °C) UL-File-Nr. OBOR2.E317427
  • MW 35-C: 180 °C
  • MW 28-C: 130 °C

Delivery forms

5 kg, 25 kg container and spray bottles on request.

Color

Red

Storage

Shelf life of ER-41 is 24 months whenstored in original closed containers at max. 30 °C protected from direct sunlight and moisture.

Hardening

Air drying time on copper plate: 60 sec. set to touch

Processing

For spraying applications Synthite ER-41 must be thinned with 15 % of Dolph's® T-200 thinner.
It is supplied with a viscosity suitable for application by brush.

Please observe the respective safety data sheet.

Technical data

Mechanical
Property Unit of measure Conditions  Value  Test method 
Specific density  g/l  25 °C 900-1000  
Viscosity  30 °C
Viscosity  25 °C 90-120 Ford Cup 4
Chemical
Property Conditions  Blistering  Rusting  Cracking  Test method 
Resistance  salt water no   no ISO 4628/2-3-4
Resistance  1 % NaOH dilution no no no ISO 4628/2-3-4
Resistance  10 % sulfuric acid no no no ISO 4628/2-3-4
Resistance  water no ISO 4628/2-3-4
Resistance     
Electrical
Property Unit of measure Conditions  Value  Test method 
Dielectric strength  kV/mm  after 24 h water immersion / 0.025 mm film thickness 48 ASTM D-115
Dielectric strength  kV/mm  trocken / 0.025 mm film thickness 80 ASTM D-115