Polyurethane used as rheology-modifier e.g. in cosmetics or pharmaceuticals, based on di-isocyanate, polyether-polyol and long-chain mono-alcohol, -thiol or -amine

摘要

Polyurethane (A) based on di-isocyanate, polyether-polyol and at least one monohydric alcohol, thiol or primary or secondary amine, is new. Polyurethane (A) based on di-isocyanate(s), polyether(s) with two active hydrogen atoms and at least one monohydric alcohol, thiol or primary or secondary amine of formula R1-Z1 (I), is new. R1 = 8-30C alkyl or alkenyl, aryl-(6-22C alkyl) or aryl-(6-22C alkenyl), with alkenyl groups containing 1, 2, 3 or 4 non-adjacent double bonds; Z1 = OH, SH or NHR2, and R2 = H, 1-6C alkyl or 5-8C cycloalkyl. An Independent claim is included for modifying the rheological properties of homogeneous or heterophase compositions containing water-insoluble compound(s) (B) which are liquid at 20 deg C by mixing and optionally heating with (A).