Environment-friendly type synthetic tannin color fixing agent as well as preparation method and application thereof

The invention discloses an environment-friendly type synthetic tannin color fixing agent as well as a preparation method and application thereof. The color fixing agent is a synthetic tannin color fixing agent prepared from the following raw materials in percentage by mass: 15-30% of a phenol compound, 10-30% of an aromatic sulfonic acid compound, 1-5% of a catalyst, 5-15% of a formaldehyde solution, 0.5-2% of a chelating agent, 0.5-3% of a modifier, 1-4% of a dispersant and the balance of water. When being applied to color fixation of chinlon and blended fabrics, the synthetic tannin color fixing agent disclosed by the invention has the advantages of being good in acid resistance stability, small in color change, good in color fastness, and the like. 本发明公开了种环保型合成单宁固色剂及其制备方法与应用。该固色剂由如下各质量百分含量的原料制得的合成单宁固色剂：15-30％酚类化合物、10％-30％芳香族磺酸化合物、1-5％催化剂、5-15％甲醛水溶液、0.5％～2％螯合剂、0.5-3％改性剂、1％～4％分散剂；余量为水。本发明提供的合成单宁固色剂用于锦纶及其混纺织物固色时具有耐酸稳定性好、色变小、固色牢度好等优点。