Polyurethane composition having an adjustable pot life and suitable as a floor coating

A polyurethane composition comprising a first component A and a second component B, wherein

• the first component A comprises
• a polyol mixture P, comprising
• at least one polyol P1 having an average molecular weight of 800 to 30 000 g/mol, wherein the polyol P1 is a polyhydroxy-functional fat and/or a polyhydroxy-functional oil, or a polyol obtained by chemically modifying natural fats and/or natural oils;
• and
• at least one polyol P2 selected from the group consisting of polyester polyols and polyether polyols;
• wherein a sum total of polyol P1 and polyol P2 is more than 75% by weight of the polyol mixture P;
• and
• the second component B comprises
• at least one aliphatic polyisocyanate I;
• wherein the polyurethane composition additionally contains 5% by weight to 70% by weight of at least one filler F, based on the total weight of the polyurethane composition, and at least one tin catalyst K for the reaction of hydroxyl groups and isocyanate groups that is capable of forming thio complexes, and at least one compound T having at least one thiol group, a molar ratio of all thiol groups in the at least one compound T to all metal atoms in the at least one tin catalyst K (T/K) being from 2.2:1 to 40:1 and a molar ratio of all NCO groups in the polyurethane composition to all metal atoms in the at least one tin catalyst K (NCO/K) being from 50 to 1500.