Reducing blister formation in polyurethane cementitious hybrid systems
AssigneeSika Technology AG
InventorsPatricia Gimeno Santos, Carola Kaddatz, Jochen Grötzinger
Life of this patent
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Abstract
A multi-component composition, in particular a three-component composition, especially for manufacture of a polyurethane cementitious hybrid flooring, including or made of: a polyol component (A) including at least one polyol and water; a hardener component (B) including at least one polyisocyanate compound; a solid component (C) including at least one hydraulic binder; and wherein at least one of the components of the multi component composition includes at least one comb polymer having a main chain including acid groups, and side chains being attached on the main chain.
Claims17
A multi-component composition for manufacture of a polyurethane cementitious hybrid coating or flooring, comprising:
- a) a polyol component (A) comprising at least one polyol and water;
- b) a hardener component (B) comprising at least one polyisocyanate compound;
- and
- c) a solid component (C) comprising at least one hydraulic binder and at least one comb polymer having:
- (i) a main chain comprising acid groups, and (ii) side chains being attached to the main chain, wherein:
- the at least one comb polymer is in a solid state in the solid component (C), and
- the at least one comb polymer is present in an amount of from 0.001 to 2 wt.-% with respect to a total weight of the composition.
A method comprising mixing at least one coating, mortar and/or screed composition based on polyurethane and hydraulic binders with at least one comb polymer having:
- (i) a main chain comprising acid groups, and (ii) side chains being attached to the main chain so as to reduce blister formation in the at least one coating, mortar and/or screed composition based on polyurethane and hydraulic binders.
Dependencies are inferred from the claim text.