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I want to increase the amount of coatings used and stored at my current facility.

Do you have any of these problems?

  • The coating agent you are currently using is classified as a Class I petroleum product, and you would like to increase the amount used and the amount stored, but cannot do so at your current facility.
  • We are using HAYAKOAT, but we are having trouble with whitening when the humidity is high.

Problem Solution

The solution is "Medium-drying HAYACOAT"!

  • Chemical products that fall under Class 1 Petroleum are highly hazardous and the designated quantity may be exceeded.
    The "medium-drying type" is a second petroleum category with lower hazard (flammability) than HAYAKOAT Mark 2EF, so the currentTherefore, the handling quantity can be increased without changing the place of use or storage.
  • When using HAYAKOTE MARK 2EF, whitening phenomenon may occur due to the effect of humidity.
    The "medium-drying type" allows time for the product to begin drying.gradualThe "medium-drying type" is less affected by humidity during application and drying by slowing down the drying time, and is more resistant to the effects of humidity.Effective as a measure against whitening phenomenonThis is effective as a countermeasure against bleaching.
    Complete drying should be done by24 hours, the same as conventional products.The drying time is 24 hours, the same as the conventional product.

About usage and storage volume

Inflammable liquids are classified as hazardous materials under the Fire Service Law and are regulated by the Fire Service Law. HAYAKOAT Mark 2EF also falls under this category of flammable liquid.
The Fire Service Law defines the amount to be regulated as followsDesignated quantityThe designated quantity is defined asThe higher the hazard, the smaller the quantity, and the lower the hazard, the larger the quantity.The more hazardous the product, the smaller the quantity to be handled (the more hazardous the product, the smaller the quantity to be handled).
A typical example is the regulation of places of use and storage. A permit from the municipality is required for places where more than the specified quantity is used or stored.
In additionEven if the quantity is less than the designated quantity, notification to the municipality is required if the quantity is more than 1/5 of the designated quantity.The following is a list of the items that are subject to the notification requirement.

In other words, if the volume to be handled is large, it can only be handled at locations that meet the standards of the Fire Service Law.

Designated quantity of Class 4 (flammable liquids)

For example, since HAYAKOTE Mark 2EF falls under Class 4 Petroleums No. 1 (non-water soluble), a hazardous material under the Fire Service ActThe designated quantity is 200LThe designated quantity is 200 liters.
Therefore, a notification to the municipality is required for handling and storage of Hayakote Mark 2EF if the volume is 40 L or more, and a permit is required if the volume is 200 L or more.
In other words, only facilities that meet the criteria for handling 40L or more can handle the product after application to the municipality has been submitted.

This is where the "medium-drying type" comes into play.
The medium-drying type is classified as a second petroleum (non-water soluble), which is less hazardous than the first petroleum, so it can be handled only in facilities that meet the standards for handling more than 40 liters.The designated quantity is 1,000 liters.The designated quantity is 1,000 liters.
In other words, an application to the municipality as a place of use or storage is not required for quantities of up to 200 liters, which means that five times more can be handled than in the case of Class I petroleum products.

Product name Characteristics Designated quantity
Class 4 flammable liquid Special flammables - 50L
Petroleum No. 1 Non-water soluble (current HAYAKOAT) 200L
Water soluble 400L
Alcohols - 400L
Petroleum products Non-water soluble (medium-drying hayakote) 1000L
Water soluble 2000L
Tertiary petroleum Non-water soluble 2000L
Water soluble 4000L
Petroleum No. 4 - 6000L
Animal and vegetable oils - 10000L

What is the difference between the current product and the medium-drying type?

The only difference is the solvent used (a component that volatilizes and disappears after application); the coating film formed after application is identical.
In other words, the "The characteristics of the coating film are the same" so there is no need for a new evaluation test and a smooth transition.

Features of "Medium-drying HAYACOAT

Gas barrier property
The film formed protects substrates from moisture and corrosive gases.
Insulating properties
Forms an insulating film on narrow patterns on printed circuit boards to improve reliability.
Adheres well to soldered surfaces, metals, resins, porcelain, etc.
Since it has low odor and is not subject to the Ordinance on Prevention of Organic Solvent Poisoning, there is no need to "install exhaust equipment," "measure the working environment," "wear gas masks," or "have workers undergo special medical examinations," making work relatively simple.
Resin Effectiveness
Low resin affectivity, and does not affect most of the parts.
Can be used for resins (ABS, PVC, PET, etc.).

Evaluation of sulfurization resistance

HayacoatThe Mark2 uncoated one was discolored by corrosion due to sulfurization, while the Mark2 coated one was discolored by corrosion due to sulfurization.
HayacoatThe Mark2 coated surface is clean as you can see, and the effect of the coating is obvious.

Test conditions
Hydrogen sulfide gas (30ppm±6ppm, 48h)
Copper plate


Haya Coat Mark2 uncoated is discolored due to corrosion from sulfidation


Those coated with Haya Coat Mark2 are clean and the effect of the coating is obvious
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