Printing ink with high heat resistance

The invention discloses a printing ink with high heat resistance. The printing ink is prepared from the following constituents in parts by weight: 5-10 parts of 1053 organic silicon resin, 2-4 parts of 9801 organic silicon resin, 1-2 parts of 804 organic silicon resin, 4-6 parts of thermoplastic acrylic resin, 10-15 parts of an alcohol-dissolving polyurethane solution, 9-10 parts of ternary hydroxyl-modified vinyl resin copolymer, 20-25 parts of a pigment, 20-25 parts of acetic acid, 22-25 parts of ethanol, 1-2 parts of ethyl acetate, 3-4 parts of acrylonitrile butadiene rubber, and 4-5 parts of acetone, wherein the mass concentration of the alcohol-dissolving polyurethane solution is 20-25%. The printing ink disclosed by the invention is high in heat resistance, is free of any change in color, any deformation and glue phenomenon when the temperature is larger than 100 DEG C, and is suitable for printing various materials; furthermore, the adhesive force is high, so that the pigment is durable and free of falling off; the printing ink is quick in drying, and the solvent on the printed material after printing is low in residual quantity, so that physical and psychological health for printing ink makers, pressmen and printed material users is guaranteed.