THREE COMPONENT COMPOSITION FOR THE MANUFACTURE OF PRIMER LAYER OR SCRATCH COATING FOR FLOORING
The present invention relates to a three component composition consisting of a polyol component (A) comprising at least two polyols, one with high, one with low molecular weight and water, a polyisocyanate component (B) comprising a methylene diphenyl diisocyanate (MDI) product with an average NCO f...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The present invention relates to a three component composition consisting of a polyol component (A) comprising at least two polyols, one with high, one with low molecular weight and water, a polyisocyanate component (B) comprising a methylene diphenyl diisocyanate (MDI) product with an average NCO functionality of at least 2.5, or a methylene diphenyl diisocyanate (MDI) product with an average NCOfunctionality of at least 2 and at least one further polyol with an amount of between 1% and 30% based on the weight of said polyisocyanate component (B), wherein said MDI product and said polyol have reacted at least partially, and a powder component (C) comprising at least one hydraulic binder, preferably cement and/or calcined paper sludge, preferably a calcium compound selected from calcium hydroxide and/or calcium oxide, and optionally one or more aggregates. The composition contains 2-(Dimethylamino)ethanol, whereby the molar ratio of the 2-(Dimethylamino)ethanol to the OH-groups of thepolyol P1 a is between 0. |
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