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| EFKA-3886 |
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| Polyisocyanates modified polysiloxane |
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EFKA-3886 is a polysiloxane modified polyisocyanate designed to crosslink with hydroxyl or carboxyl groups.
It is compatible with most polyisocyanates e.g. Desmodur N, L, IL, HL and similar products.
The addition of EFKA-3886 in polyurethane lacquers or coatings gives the following advantages:
-improved leveling
-reduced tendency for orange-peel or cratering
-improved slip and surface smoothness, these improvements are more permanent, as the additives cross-link to form part of the final film
-reduced surface tension with little or no foam formation
-prevention of B?ard cells
* Application:
EFKA-3886 is a cross-linking additive designed for all polyurethane systems, both two-component and moisture curing.
It must be added to the polyisocyanate solution in two component systems.
EFKA-3886, especially developed for use in wood finishes, helps to improve mar-resistance, orientation of the matting agent and the prevention of flooding in pigmented systems.
When applying the polyurethane system by curtain coating on open pore wood surfaces, a defoamer such as EFKA-2022 should be added.
Since EFKA-3886 actually takes part in the cross-linking action and forms an integral part of the finished polymer, the slip and scratch resistance properties are more permanent compared with normal additives. |
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Active ingredients : 50 - 52%
Solvents : butylacetate/methoxypropylacetate
Density at 20'C : 1.00 - 1.02 g/cm3
Flashpoint : 24'C
Appearance : clear, colorless liquid
NCO-value : approx. 12% on active ingredients |
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