Polyurethane adhesive for reflective leather and preparation method thereof

The invention discloses a polyurethane adhesive for reflective leather, which is characterized by comprising a component A and a component B. The component A comprises the following components in parts by weight: 35-45 parts of high molecular weight polyester; 5-10 parts of epoxy resin; 0.5 to 1 part of a coupling agent; 0.01 to 0.05 part of a catalyst; 30-40 parts of an organic solvent; the component B is any one or more of an isocyanate addition product or an isocyanate tripolymer; the high-molecular-weight polyester is formed by catalytically polymerizing a polyacid component and a polyol component, the number-average molecular weight of the high-molecular-weight polyester is 10000-40000, and the glass-transition temperature of the high-molecular-weight polyester is less than 10 DEG C; the weight ratio of the component A to the component B is (100: 2)-(100: 6). The polyurethane adhesive is prepared by taking high-molecular polyester as matrix resin and compounding epoxy resin and a coupling agent, the poly