| CPC C08G 18/3812 (2013.01) [C07D 317/22 (2013.01); C08G 18/0823 (2013.01); C08G 18/10 (2013.01); C08G 18/222 (2013.01); C08G 18/3206 (2013.01); C08G 18/3802 (2013.01); C08G 18/381 (2013.01); C08G 18/6692 (2013.01); C08G 18/7621 (2013.01); B01J 23/04 (2013.01); B01J 31/0201 (2013.01); B01J 31/04 (2013.01); B01J 31/121 (2013.01); B01J 2531/12 (2013.01); B01J 2531/13 (2013.01); C07D 317/24 (2013.01)] | 2 Claims |

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1. A waterborne polyurethane, which is prepared from raw materials comprising, in parts by mass:
15-40 parts of a polyisocyanate monomer, 45-65 parts of a polymer polyol, 5-25 parts of a fluorine-containing modified monomer, a solid Lewis acid catalyst, 0.5-8 parts of a small-molecule chain extender, 3-10 parts of an ionic hydrophilic chain extender, more than 0 and not more than 12 parts of an ionic neutralizer, and water,
wherein a mass ratio of the fluorine-containing modified monomer to the solid Lewis acid catalyst is in a range of 1:0.005-0.05; and
the fluorine-containing modified monomer has a structure of Formula I:
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