An aqueous composition with a sediment content ≤ 5% comprising a polyurethane vinyl hybrid dispersion and containing ≤ 0.5 wt% of 1-methyl-2-pyrrolidinone by weight of the composition; wherein the polyurethane has an acid value in the range of from 25 to 65 mgKOH/g and is obtained by the reaction of: A) an isocyanate-terminated prepolymer formed from components comprising: (i) 36 to 60 wt% of at least one aromatic organic polyisocyanate where all of the isocyanate groups are directly bonded to an aromatic group irrespective of whether aliphatic groups are also present; (ii) 0 to 30 wt% of at least one aliphatic organic polyisocyanate; (iii) 0 to 15 wt% of at least one isocyanate-reactive polyol bearing ionic and/or potentially ionic water-dispersing groups with a weight average molecular weight ≤ 500 g/mol; (iv) 0 to 10 wt% of at least one isocyanate-reactive polyol bearing non-ionic water-dispersing groups; (v) 0 to 15 wt% of at least one isocyanate-reactive polyol with a weight average molecular weight ≤ 500 g/mol not comprised by (iii) or (iv); (vi) 20 to 58 wt% of at least one isocyanate-reactive polyol not comprised by (iii), (iv) or (v); where (i) + (ii) + (iii) +(iv) + (v) + (vi) add up to 100 wt%; where the NCO/OH ratio is in the range of from 1.2:1 to 2.5:1; and B) at least one active-hydrogen chain extending compound; where the active-hydrogen/NCO ratio is in the range of from 0.4:1 to 1.3:1; in the presence of (a) ≤ 5 wt% of 1-methyl-2-pyrrolidinone by weight of polyurethane and (b) at least one reactive diluent, wherein the reactive diluent comprises between 5 and 35% by weight of both the isocyanate-terminated prepolymer and the reactive diluent together; whereby the sediment content is determined with the method as described in the description. A) an isocyanate-terminated prepolymer formed from components comprising: (i) 36 to 60 wt% of at least one aromatic organic polyisocyanate where all of the isocyanate groups are directly bonded to an aromatic group irrespective of whether aliphatic groups are also present; (ii) 0 to 30 wt% of at least one aliphatic organic polyisocyanate; (iii) 0 to 15 wt% of at least one isocyanate-reactive polyol bearing ionic and/or potentially ionic water-dispersing groups with a weight average molecular weight ≤ 500 g/mol; (iv) 0 to 10 wt% of at least one isocyanate-reactive polyol bearing non-ionic water-dispersing groups; (v) 0 to 15 wt% of at least one isocyanate-reactive polyol with a weight average molecular weight ≤ 500 g/mol not comprised by (iii) or (iv); (vi) 20 to 58 wt% of at least one isocyanate-reactive polyol not comprised by (iii), (iv) or (v); where (i) + (ii) + (iii) +(iv) + (v) + (vi) add up to 100 wt%; where the NCO/OH ratio is in the range of from 1.2:1 to 2.5:1; and (i) 36 to 60 wt% of at least one aromatic organic polyisocyanate where all of the isocyanate groups are directly bonded to an aromatic group irrespective of whether aliphatic groups are also present; (ii) 0 to 30 wt% of at least one aliphatic organic polyisocyanate; (iii) 0 to 15 wt% of at least one isocyanate-reactive polyol bearing ionic and/or potentially ionic water-dispersing groups with a weight average molecular weight ≤ 500 g/mol; (iv) 0 to 10 wt% of at least one isocyanate-reactive polyol bearing non-ionic water-dispersing groups; (v) 0 to 15 wt% of at least one isocyanate-reactive polyol with a weight average molecular weight ≤ 500 g/mol not comprised by (iii) or (iv); (vi) 20 to 58 wt% of at least one isocyanate-reactive polyol not comprised by (iii), (iv) or (v); B) at least one active-hydrogen chain extending compound; where the active-hydrogen/NCO ratio is in the range of from 0.4:1 to 1.3:1; in the presence of (a) ≤ 5 wt% of 1-methyl-2-pyrrolidinone by weight of polyurethane and (b) at least one reactive diluent, wherein the reactive diluent comprises between 5 and 35% by weight of both the isocyanate-terminated prepolymer and the reactive diluent together;