Paper damp-proof agent

The invention provides a paper damp-proof agent. The paper damp-proof agent is prepared from, by mass, 30-35% of synthetic resin, 3-5% of paraffin, 3-5% of polyethylene wax, 1-2% of rosin resin, 0.5-1% of ethyl alcohol, 45-50% of water and 1-2% of auxiliary. Synthetic resin has a series of excellent performance of good film forming performance, good luster, high transparency, rapid drying speed, abrasion and water resistance, water prevention and the like, auxiliary can effectively ensure the quality of the paper damp-proof agent, ethyl alcohol is added appropriately when a large volume of water is used, the agent is colorless, odorless and free of toxin, volatility is almost zero, leveling property is quite high, the drying performance of aqueous solvent is improved, and the processing applicability of the aqueous waterproof agent is improved; when the paper damp-proof agent is used for preventing paper products from water and dampness, the paper damp-proof agent can be diluted in about 5-10 times of water,