Polyurethane hybrid polymers and process for the production thereof

A method for preparing polyurethane hybrid polymers, comprising reacting polyisocyanates (A) with compounds (B) bearing isocyanate-reactive groups and optionally with chain extenders and/or crosslinkers (C) and optionally in the presence of a catalyst (D) and optionally auxiliaries and/or additives (E) in a molar ratio of NCO groups to OH and/or NH groups of 0.8:1 to 3.5:1, wherein

• i) the polyisocyanate (A) is an NCO prepolymer having an NCO content of 10% to 40% by weight,
• which is prepared from at least one polyisocyanate (A′) comprising at least one of aliphatic or aromatic polyisocyanates and at least one polyol component (B′) comprising at least one of a polystyrene polyol having a number-average molecular weight of >1000 g/mol or a polyacrylonitrile polyol having a number-average molecular weight of >2000 g/mol and having the formula below and prepared as shown below:
• 2nRCH═CH2+H—[O—R′-]mO—C(O)—R″—S—C(S)—S—R″—C(O)—O[—R′—O]m′—H→H—[O—R′-]mO—C(O)—R″—[CH2—CH(R)—]nS—C(S)—S—[—CH2—CH(R)—]n′—R″—C(O)—O [—R′—O]m′—H
• wherein R represents an aromatic radical C6H5 or a nitrile radical CN, n, n′, m, and m′ are each an integer ≥1, and R′ and R″ independently are alkylene radicals, and optionally at least one further polyol (B″) comprising at least one of polyester polyols, polyether polyols, or polyetherester polyols, and
• ii) the compound (B) bearing isocyanate-reactive groups that is used is at least one compound comprising at least one of polyester polyols, polyether polyols, polyetherester polyols, or amino-terminated polyethers.