US 2017/0096368 A1 · THREE COMPONENT COMPOSITION FOR THE MANUFACTURE OF POLYURETHANE CEMENTITIOUS HYBRID FLOORING OR COATING WITH IMPROVED SURFACE GLOSS

Abstract

The present invention relates to a three component composition consisting of a polyol component (A) comprising at least two polyols, one with high and 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 NCO functionality 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. Polyurethane cementitious hybrid flooring or coating systems having glossy/semiglossy surfaces, good workability and outstanding mechanical properties can be achieved. Blister formation can be avoided.

Claims15

Dependent claims

Three component composition consisting of

a) a polyol component (A) comprising
at least one polyol P1a with an average molecular weight of 800 to 30′000 g/mol, preferably 850 to 20′000 g/mol, more preferably 900 to 10′000 g/mol, and
at least one polyol P1b with an average molecular weight of 48 to 800 g/mol, preferably 60 to 600 g/mol, more preferably 60 to 400 g/mol, most preferably 60 to 300 g/mol, and
water, and
b) 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 NCO functionality of at least 2 and at least one polyol P2 with an amount of between 1 and 30%, preferably between 5 and 25%, more preferably between 10 and 20% by weight, based on the weight of said polyisocyanate component (B), wherein said MDI product and said polyol P2 have reacted at least partially, and
c) a powder component (C) comprising at least one hydraulic binder, preferably cement and/or calcined paper sludge.

5 more elements

Dependencies are inferred from the claim text.

Three component composition for the manufacture of polyurethane cementitious hybrid flooring or coating with improved surface gloss

Life of this patent

Three component composition for the manufacture of polyurethane cementitious hybrid flooring or coating with improved surface gloss

Life of this patent

Abstract

Claims15