Two-component polyurethane composition with adjustable pot life for spray application

A polyurethane composition consisting of a first and a second component;

• wherein
• the first component A comprises
• at least one polyol A1 having an OH functionality in the range from 1.5 to 4 and a mean molecular weight in the range from 250 to 15 000 g/mol, and
• at least one diol A2 having two hydroxyl groups that are linked via a C2 to C9 carbon chain, and
• at least one compound T that has at least one thiol group;
• and
• the second component B comprises
• at least one polyisocyanate I;
• wherein one of the two components additionally comprises at least one metal catalyst K for the reaction of hydroxyl groups and isocyanate groups that is able to form thio complexes;
• the first component A comprises an acrylonitrile and styrene grafted polyether polyol H in a range of 7.5-25% by weight, and
• the second component B comprises an isocyanate-group containing prepolymer P1, selected from either a polymer P1-1 based on at least one polyisocyanate, at least one polyether polyol and at least one hydroxy-terminated polybutadiene polymer, or from a polymer P1-2, based on at least one polyisocyanate and at least one polyether polyol.