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| EFKA-3888 |
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| Polyisocyanate modified polysiloxane |
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EFKA-3888 is a polysiloxane modified polyisocyanate designed to crosslink with hydroxyl or carboxyl groups.
EFKA-3888 is compatible with most polyisocyanates e.g. Desmodur N, L, IL, HL and similar products.
The addition of EFKA-3888 in polyurethane lacquers or coatings give 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-3888 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-3888, especially developed for use in metal coatings, improves leveling and surface smoothness and results in faster scratch resistance during the initial drying stage.
Since EFKA-3888 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 : 44 - 46%
Solvent : butylacetate
Density at 20'C : 0.97 - 0.99 g/cm3
Flashpoint : 24'C
Appearance : clear to slightly hazy, colourless liquid
NCO-value : approx. 8 % on active ingredients |
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