Animal coupling agent for automobile steel sheet pin jet ink

The invention discloses animal coupling agent for automobile steel sheet pin jet ink, relating to the technical field of automobile part manufacturing. The animal coupling agent is prepared from the following raw materials: 60 to 80 parts of water, 2 to 4 parts of potassium hydroxide, 2 to 4 parts of laurate, 5 to 15 parts of tung oil, 20 to 30 parts of crunchy animal oil, 2 to 4 parts of anti-blocking agent, 15 to 25 parts of ethyl alcohol, 2 to 4 parts of organic base modifier, 3 to 5 parts of water-resistant agent and 2 to 4 parts of drying agent. The animal coupling agent has the beneficial effects that a printing ink binder prepared by the invention is reasonable in formula, simple in preparation technology, the used raw materials are non-toxic and harmless, since animal oil and fat are added, the printing ink binder is natural and non-pollution, free from chemical elements, has the advantages of wetting and high concentration at the same time, the dyeing power is high, and environmental protection and h