Name: Anti-Skinning Agent MEK Oxime (MEKO-Type)
Brand: Coatingsink
SKU: anti-skinning-tolex-mekoxime
Availability: InStock

Question 1

How does MEK oxime prevent skinning in alkyd-based coatings?

Accepted Answer

MEKO acts as a temporary oxygen scavenger and drier retarder. It preferentially reacts with atmospheric oxygen at the paint surface, interrupting the autoxidative crosslinking chain that would otherwise form a solid skin in the can. Once the can is opened and MEKO volatilizes, normal drying resumes.

Question 2

What is the correct addition sequence for MEK oxime in an alkyd formulation?

Accepted Answer

Add MEKO at the very end of the production process, after driers have been incorporated and the batch has cooled below 40°C. Pre-mixing with driers at elevated temperature can deactivate both components. Typical dosage is 0.1–0.5% by total weight; exceed 0.5% cautiously as over-dosage delays dry times.

Question 3

Can MEK oxime be used in waterborne alkyd or hybrid systems?

Accepted Answer

MEKO is primarily formulated for solventborne alkyd systems. In waterborne alkyds, skinning is less pronounced due to lower VOC levels; however, small additions (0.05–0.15%) are sometimes used. Verify compatibility with the emulsifier package, as MEKO's solubility in water is limited (~3.5% at 20°C).

Active Content	≥99%
Density (25°C)	0.93 g/ml
Flash Point (CC)	74°C
Viscosity (25°C)	~1.5 mPa·s
Recommended Dosage	0.1–0.5% on total formula

Anti-Skinning Agent MEK Oxime (MEKO-Type)

Specifications

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