High-solid printing resin for flexible material and preparation method of high-solid printing resin

The invention provides a high-solid printing resin for a flexible material, which is prepared from the following components in parts by weight: 15 to 40 parts of polyhydric alcohol, 15 to 40 parts of diisocyanate, 0 to 20 parts of dihydric alcohol, 0 to 15 parts of diamine, 20 to 60 parts of solvent, 10 to 50 parts of closed curing agent and 0.01 to 3 parts of thermosensitive catalyst. According to the high-solid printing resin for the flexible material, polyurethane is utilized to provide elongation and soft hand feeling, the closed curing agent can increase solid content and surface dryness, and printing processing is facilitated; the preparation method comprises the following steps: firstly synthesizing polyurethane resin, then mixing the polyurethane resin with a closed curing agent, and heating after printing to enable the curing agent to be subjected to deblocking reaction, so as to prepare the high-solid printing resin meeting the performance. The high-solid printing resin for the flexible material is