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Medium-drying type Hayacoat Mark2 EF (undiluted type / black / 15kg) (AY-L1510B)

Original price ¥59,400 - Original price ¥59,400
Original price
¥59,400 - ¥59,400
Current price ¥59,400
(Prices include tax)

Insulating coating agent for substrates with excellent resistance to moisture and corrosive gases

Prices have been revised effective July 1, 2023.

Moisture and corrosion resistant coating agent with excellent gas barrier properties, effective against moisture and corrosive gases. It has excellent insulation properties and improves the insulation reliability of narrow patterns on printed circuit boards, etc. Protects PCBs from salt damage in corrosive gas atmospheres such as hot spring areas and coastal areas. Not regulated by the Ordinance on Prevention of Organic Solvent Poisoning. As a Class 2 petroleum, it is subject to less restrictions on use and storage volume than Class 1 petroleum. There are 2 types with different contents and 6 variations with different colors.See variations with different capacitiesSee variations in different colors

Main specifications

Model No.
RoHS directive (10 substances)
1 can
15kg (16L)
Product size (including packaging, approx.)
240 x 240 x 350mm
Weight (including packaging, approx.)
JAN code
Country of origin
Main ingredients
Polyvinyl resin
Black liquid
Volume resistivity
Dielectric Constant
3.4 (1MHz)
Dissipation Factor
Dielectric breakdown strength
Pencil hardness
Copper plate corrosion test
No discoloration (room temperature, 500h)
100/100 (Cross-cut method on copper foil plate)
Transmission humidity
<0.25 (g/m)2D, 100 μm)
Sulfurous acid gas resistance test
No corrosion on copper foil surface (30±2ppm, 48h)
Hydrogen sulfide gas resistance test
No corrosion on copper foil surface (30±6ppm, 48h)
Heat and humidity resistance test
No corrosion on copper foil surface (80°C, 90%, 168h)
Thermal shock test
No peeling or cracking (-40°C to 125°C, 100 cycles)
High temperature test
No change in insulation resistance (120°C, 500h)
55 mPa-s (20°C)
Specific gravity
Continuous operating temperature range
Hazardous material and content under the Fire Service Law
Class 4 Petroleum No. 2 (non-water soluble) 16L
Specific odor
Flame retardancy
Equivalent to UL94 V-0 (not registered)


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